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修改后台权限

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yoyuzh
2026-03-24 14:30:59 +08:00
parent 00f902f475
commit b2d9db7be9
9310 changed files with 1246063 additions and 48 deletions
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node_modules/@modelcontextprotocol/sdk/dist/cjs/examples/client/elicitationUrlExample.d.ts generated vendored Normal file
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export {};
//# sourceMappingURL=elicitationUrlExample.d.ts.map

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{"version":3,"file":"elicitationUrlExample.d.ts","sourceRoot":"","sources":["../../../../src/examples/client/elicitationUrlExample.ts"],"names":[],"mappings":""}

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node_modules/@modelcontextprotocol/sdk/dist/cjs/examples/client/elicitationUrlExample.js generated vendored Normal file
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"use strict";
// Run with: npx tsx src/examples/client/elicitationUrlExample.ts
//
// This example demonstrates how to use URL elicitation to securely
// collect user input in a remote (HTTP) server.
// URL elicitation allows servers to prompt the end-user to open a URL in their browser
// to collect sensitive information.
Object.defineProperty(exports, "__esModule", { value: true });
const index_js_1 = require("../../client/index.js");
const streamableHttp_js_1 = require("../../client/streamableHttp.js");
const node_readline_1 = require("node:readline");
const types_js_1 = require("../../types.js");
const metadataUtils_js_1 = require("../../shared/metadataUtils.js");
const simpleOAuthClientProvider_js_1 = require("./simpleOAuthClientProvider.js");
const auth_js_1 = require("../../client/auth.js");
const node_http_1 = require("node:http");
// Set up OAuth (required for this example)
const OAUTH_CALLBACK_PORT = 8090; // Use different port than auth server (3001)
const OAUTH_CALLBACK_URL = `http://localhost:${OAUTH_CALLBACK_PORT}/callback`;
let oauthProvider = undefined;
console.log('Getting OAuth token...');
const clientMetadata = {
client_name: 'Elicitation MCP Client',
redirect_uris: [OAUTH_CALLBACK_URL],
grant_types: ['authorization_code', 'refresh_token'],
response_types: ['code'],
token_endpoint_auth_method: 'client_secret_post',
scope: 'mcp:tools'
};
oauthProvider = new simpleOAuthClientProvider_js_1.InMemoryOAuthClientProvider(OAUTH_CALLBACK_URL, clientMetadata, (redirectUrl) => {
console.log(`\n🔗 Please open this URL in your browser to authorize:\n ${redirectUrl.toString()}`);
});
// Create readline interface for user input
const readline = (0, node_readline_1.createInterface)({
input: process.stdin,
output: process.stdout
});
let abortCommand = new AbortController();
// Global client and transport for interactive commands
let client = null;
let transport = null;
let serverUrl = 'http://localhost:3000/mcp';
let sessionId = undefined;
let isProcessingCommand = false;
let isProcessingElicitations = false;
const elicitationQueue = [];
let elicitationQueueSignal = null;
let elicitationsCompleteSignal = null;
// Map to track pending URL elicitations waiting for completion notifications
const pendingURLElicitations = new Map();
async function main() {
console.log('MCP Interactive Client');
console.log('=====================');
// Connect to server immediately with default settings
await connect();
// Start the elicitation loop in the background
elicitationLoop().catch(error => {
console.error('Unexpected error in elicitation loop:', error);
process.exit(1);
});
// Short delay allowing the server to send any SSE elicitations on connection
await new Promise(resolve => setTimeout(resolve, 200));
// Wait until we are done processing any initial elicitations
await waitForElicitationsToComplete();
// Print help and start the command loop
printHelp();
await commandLoop();
}
async function waitForElicitationsToComplete() {
// Wait until the queue is empty and nothing is being processed
while (elicitationQueue.length > 0 || isProcessingElicitations) {
await new Promise(resolve => setTimeout(resolve, 100));
}
}
function printHelp() {
console.log('\nAvailable commands:');
console.log(' connect [url] - Connect to MCP server (default: http://localhost:3000/mcp)');
console.log(' disconnect - Disconnect from server');
console.log(' terminate-session - Terminate the current session');
console.log(' reconnect - Reconnect to the server');
console.log(' list-tools - List available tools');
console.log(' call-tool <name> [args] - Call a tool with optional JSON arguments');
console.log(' payment-confirm - Test URL elicitation via error response with payment-confirm tool');
console.log(' third-party-auth - Test tool that requires third-party OAuth credentials');
console.log(' help - Show this help');
console.log(' quit - Exit the program');
}
async function commandLoop() {
await new Promise(resolve => {
if (!isProcessingElicitations) {
resolve();
}
else {
elicitationsCompleteSignal = resolve;
}
});
readline.question('\n> ', { signal: abortCommand.signal }, async (input) => {
isProcessingCommand = true;
const args = input.trim().split(/\s+/);
const command = args[0]?.toLowerCase();
try {
switch (command) {
case 'connect':
await connect(args[1]);
break;
case 'disconnect':
await disconnect();
break;
case 'terminate-session':
await terminateSession();
break;
case 'reconnect':
await reconnect();
break;
case 'list-tools':
await listTools();
break;
case 'call-tool':
if (args.length < 2) {
console.log('Usage: call-tool <name> [args]');
}
else {
const toolName = args[1];
let toolArgs = {};
if (args.length > 2) {
try {
toolArgs = JSON.parse(args.slice(2).join(' '));
}
catch {
console.log('Invalid JSON arguments. Using empty args.');
}
}
await callTool(toolName, toolArgs);
}
break;
case 'payment-confirm':
await callPaymentConfirmTool();
break;
case 'third-party-auth':
await callThirdPartyAuthTool();
break;
case 'help':
printHelp();
break;
case 'quit':
case 'exit':
await cleanup();
return;
default:
if (command) {
console.log(`Unknown command: ${command}`);
}
break;
}
}
catch (error) {
console.error(`Error executing command: ${error}`);
}
finally {
isProcessingCommand = false;
}
// Process another command after we've processed the this one
await commandLoop();
});
}
async function elicitationLoop() {
while (true) {
// Wait until we have elicitations to process
await new Promise(resolve => {
if (elicitationQueue.length > 0) {
resolve();
}
else {
elicitationQueueSignal = resolve;
}
});
isProcessingElicitations = true;
abortCommand.abort(); // Abort the command loop if it's running
// Process all queued elicitations
while (elicitationQueue.length > 0) {
const queued = elicitationQueue.shift();
console.log(`📤 Processing queued elicitation (${elicitationQueue.length} remaining)`);
try {
const result = await handleElicitationRequest(queued.request);
queued.resolve(result);
}
catch (error) {
queued.reject(error instanceof Error ? error : new Error(String(error)));
}
}
console.log('✅ All queued elicitations processed. Resuming command loop...\n');
isProcessingElicitations = false;
// Reset the abort controller for the next command loop
abortCommand = new AbortController();
// Resume the command loop
if (elicitationsCompleteSignal) {
elicitationsCompleteSignal();
elicitationsCompleteSignal = null;
}
}
}
/**
* Enqueues an elicitation request and returns the result.
*
* This function is used so that our CLI (which can only handle one input request at a time)
* can handle elicitation requests and the command loop.
*
* @param request - The elicitation request to be handled
* @returns The elicitation result
*/
async function elicitationRequestHandler(request) {
// If we are processing a command, handle this elicitation immediately
if (isProcessingCommand) {
console.log('📋 Processing elicitation immediately (during command execution)');
return await handleElicitationRequest(request);
}
// Otherwise, queue the request to be handled by the elicitation loop
console.log(`📥 Queueing elicitation request (queue size will be: ${elicitationQueue.length + 1})`);
return new Promise((resolve, reject) => {
elicitationQueue.push({
request,
resolve,
reject
});
// Signal the elicitation loop that there's work to do
if (elicitationQueueSignal) {
elicitationQueueSignal();
elicitationQueueSignal = null;
}
});
}
/**
* Handles an elicitation request.
*
* This function is used to handle the elicitation request and return the result.
*
* @param request - The elicitation request to be handled
* @returns The elicitation result
*/
async function handleElicitationRequest(request) {
const mode = request.params.mode;
console.log('\n🔔 Elicitation Request Received:');
console.log(`Mode: ${mode}`);
if (mode === 'url') {
return {
action: await handleURLElicitation(request.params)
};
}
else {
// Should not happen because the client declares its capabilities to the server,
// but being defensive is a good practice:
throw new types_js_1.McpError(types_js_1.ErrorCode.InvalidParams, `Unsupported elicitation mode: ${mode}`);
}
}
/**
* Handles a URL elicitation by opening the URL in the browser.
*
* Note: This is a shared code for both request handlers and error handlers.
* As a result of sharing schema, there is no big forking of logic for the client.
*
* @param params - The URL elicitation request parameters
* @returns The action to take (accept, cancel, or decline)
*/
async function handleURLElicitation(params) {
const url = params.url;
const elicitationId = params.elicitationId;
const message = params.message;
console.log(`🆔 Elicitation ID: ${elicitationId}`); // Print for illustration
// Parse URL to show domain for security
let domain = 'unknown domain';
try {
const parsedUrl = new URL(url);
domain = parsedUrl.hostname;
}
catch {
console.error('Invalid URL provided by server');
return 'decline';
}
// Example security warning to help prevent phishing attacks
console.log('\n⚠️ \x1b[33mSECURITY WARNING\x1b[0m ⚠️');
console.log('\x1b[33mThe server is requesting you to open an external URL.\x1b[0m');
console.log('\x1b[33mOnly proceed if you trust this server and understand why it needs this.\x1b[0m\n');
console.log(`🌐 Target domain: \x1b[36m${domain}\x1b[0m`);
console.log(`🔗 Full URL: \x1b[36m${url}\x1b[0m`);
console.log(`\nℹ️ Server's reason:\n\n\x1b[36m${message}\x1b[0m\n`);
// 1. Ask for user consent to open the URL
const consent = await new Promise(resolve => {
readline.question('\nDo you want to open this URL in your browser? (y/n): ', input => {
resolve(input.trim().toLowerCase());
});
});
// 2. If user did not consent, return appropriate result
if (consent === 'no' || consent === 'n') {
console.log('❌ URL navigation declined.');
return 'decline';
}
else if (consent !== 'yes' && consent !== 'y') {
console.log('🚫 Invalid response. Cancelling elicitation.');
return 'cancel';
}
// 3. Wait for completion notification in the background
const completionPromise = new Promise((resolve, reject) => {
const timeout = setTimeout(() => {
pendingURLElicitations.delete(elicitationId);
console.log(`\x1b[31m❌ Elicitation ${elicitationId} timed out waiting for completion.\x1b[0m`);
reject(new Error('Elicitation completion timeout'));
}, 5 * 60 * 1000); // 5 minute timeout
pendingURLElicitations.set(elicitationId, {
resolve: () => {
clearTimeout(timeout);
resolve();
},
reject,
timeout
});
});
completionPromise.catch(error => {
console.error('Background completion wait failed:', error);
});
// 4. Direct user to open the URL in their browser
console.log(`\n🔗 Please open this URL in your browser:\n ${url}`);
console.log('\n⏳ Waiting for you to complete the interaction in your browser...');
console.log(' The server will send a notification once you complete the action.');
// 5. Acknowledge the user accepted the elicitation
return 'accept';
}
/**
* Example OAuth callback handler - in production, use a more robust approach
* for handling callbacks and storing tokens
*/
/**
* Starts a temporary HTTP server to receive the OAuth callback
*/
async function waitForOAuthCallback() {
return new Promise((resolve, reject) => {
const server = (0, node_http_1.createServer)((req, res) => {
// Ignore favicon requests
if (req.url === '/favicon.ico') {
res.writeHead(404);
res.end();
return;
}
console.log(`📥 Received callback: ${req.url}`);
const parsedUrl = new URL(req.url || '', 'http://localhost');
const code = parsedUrl.searchParams.get('code');
const error = parsedUrl.searchParams.get('error');
if (code) {
console.log(`✅ Authorization code received: ${code?.substring(0, 10)}...`);
res.writeHead(200, { 'Content-Type': 'text/html' });
res.end(`
<html>
<body>
<h1>Authorization Successful!</h1>
<p>This simulates successful authorization of the MCP client, which now has an access token for the MCP server.</p>
<p>This window will close automatically in 10 seconds.</p>
<script>setTimeout(() => window.close(), 10000);</script>
</body>
</html>
`);
resolve(code);
setTimeout(() => server.close(), 15000);
}
else if (error) {
console.log(`❌ Authorization error: ${error}`);
res.writeHead(400, { 'Content-Type': 'text/html' });
res.end(`
<html>
<body>
<h1>Authorization Failed</h1>
<p>Error: ${error}</p>
</body>
</html>
`);
reject(new Error(`OAuth authorization failed: ${error}`));
}
else {
console.log(`❌ No authorization code or error in callback`);
res.writeHead(400);
res.end('Bad request');
reject(new Error('No authorization code provided'));
}
});
server.listen(OAUTH_CALLBACK_PORT, () => {
console.log(`OAuth callback server started on http://localhost:${OAUTH_CALLBACK_PORT}`);
});
});
}
/**
* Attempts to connect to the MCP server with OAuth authentication.
* Handles OAuth flow recursively if authorization is required.
*/
async function attemptConnection(oauthProvider) {
console.log('🚢 Creating transport with OAuth provider...');
const baseUrl = new URL(serverUrl);
transport = new streamableHttp_js_1.StreamableHTTPClientTransport(baseUrl, {
sessionId: sessionId,
authProvider: oauthProvider
});
console.log('🚢 Transport created');
try {
console.log('🔌 Attempting connection (this will trigger OAuth redirect if needed)...');
await client.connect(transport);
sessionId = transport.sessionId;
console.log('Transport created with session ID:', sessionId);
console.log('✅ Connected successfully');
}
catch (error) {
if (error instanceof auth_js_1.UnauthorizedError) {
console.log('🔐 OAuth required - waiting for authorization...');
const callbackPromise = waitForOAuthCallback();
const authCode = await callbackPromise;
await transport.finishAuth(authCode);
console.log('🔐 Authorization code received:', authCode);
console.log('🔌 Reconnecting with authenticated transport...');
// Recursively retry connection after OAuth completion
await attemptConnection(oauthProvider);
}
else {
console.error('❌ Connection failed with non-auth error:', error);
throw error;
}
}
}
async function connect(url) {
if (client) {
console.log('Already connected. Disconnect first.');
return;
}
if (url) {
serverUrl = url;
}
console.log(`🔗 Attempting to connect to ${serverUrl}...`);
// Create a new client with elicitation capability
console.log('👤 Creating MCP client...');
client = new index_js_1.Client({
name: 'example-client',
version: '1.0.0'
}, {
capabilities: {
elicitation: {
// Only URL elicitation is supported in this demo
// (see server/elicitationExample.ts for a demo of form mode elicitation)
url: {}
}
}
});
console.log('👤 Client created');
// Set up elicitation request handler with proper validation
client.setRequestHandler(types_js_1.ElicitRequestSchema, elicitationRequestHandler);
// Set up notification handler for elicitation completion
client.setNotificationHandler(types_js_1.ElicitationCompleteNotificationSchema, notification => {
const { elicitationId } = notification.params;
const pending = pendingURLElicitations.get(elicitationId);
if (pending) {
clearTimeout(pending.timeout);
pendingURLElicitations.delete(elicitationId);
console.log(`\x1b[32m✅ Elicitation ${elicitationId} completed!\x1b[0m`);
pending.resolve();
}
else {
// Shouldn't happen - discard it!
console.warn(`Received completion notification for unknown elicitation: ${elicitationId}`);
}
});
try {
console.log('🔐 Starting OAuth flow...');
await attemptConnection(oauthProvider);
console.log('Connected to MCP server');
// Set up error handler after connection is established so we don't double log errors
client.onerror = error => {
console.error('\x1b[31mClient error:', error, '\x1b[0m');
};
}
catch (error) {
console.error('Failed to connect:', error);
client = null;
transport = null;
return;
}
}
async function disconnect() {
if (!client || !transport) {
console.log('Not connected.');
return;
}
try {
await transport.close();
console.log('Disconnected from MCP server');
client = null;
transport = null;
}
catch (error) {
console.error('Error disconnecting:', error);
}
}
async function terminateSession() {
if (!client || !transport) {
console.log('Not connected.');
return;
}
try {
console.log('Terminating session with ID:', transport.sessionId);
await transport.terminateSession();
console.log('Session terminated successfully');
// Check if sessionId was cleared after termination
if (!transport.sessionId) {
console.log('Session ID has been cleared');
sessionId = undefined;
// Also close the transport and clear client objects
await transport.close();
console.log('Transport closed after session termination');
client = null;
transport = null;
}
else {
console.log('Server responded with 405 Method Not Allowed (session termination not supported)');
console.log('Session ID is still active:', transport.sessionId);
}
}
catch (error) {
console.error('Error terminating session:', error);
}
}
async function reconnect() {
if (client) {
await disconnect();
}
await connect();
}
async function listTools() {
if (!client) {
console.log('Not connected to server.');
return;
}
try {
const toolsRequest = {
method: 'tools/list',
params: {}
};
const toolsResult = await client.request(toolsRequest, types_js_1.ListToolsResultSchema);
console.log('Available tools:');
if (toolsResult.tools.length === 0) {
console.log(' No tools available');
}
else {
for (const tool of toolsResult.tools) {
console.log(` - id: ${tool.name}, name: ${(0, metadataUtils_js_1.getDisplayName)(tool)}, description: ${tool.description}`);
}
}
}
catch (error) {
console.log(`Tools not supported by this server (${error})`);
}
}
async function callTool(name, args) {
if (!client) {
console.log('Not connected to server.');
return;
}
try {
const request = {
method: 'tools/call',
params: {
name,
arguments: args
}
};
console.log(`Calling tool '${name}' with args:`, args);
const result = await client.request(request, types_js_1.CallToolResultSchema);
console.log('Tool result:');
const resourceLinks = [];
result.content.forEach(item => {
if (item.type === 'text') {
console.log(` ${item.text}`);
}
else if (item.type === 'resource_link') {
const resourceLink = item;
resourceLinks.push(resourceLink);
console.log(` 📁 Resource Link: ${resourceLink.name}`);
console.log(` URI: ${resourceLink.uri}`);
if (resourceLink.mimeType) {
console.log(` Type: ${resourceLink.mimeType}`);
}
if (resourceLink.description) {
console.log(` Description: ${resourceLink.description}`);
}
}
else if (item.type === 'resource') {
console.log(` [Embedded Resource: ${item.resource.uri}]`);
}
else if (item.type === 'image') {
console.log(` [Image: ${item.mimeType}]`);
}
else if (item.type === 'audio') {
console.log(` [Audio: ${item.mimeType}]`);
}
else {
console.log(` [Unknown content type]:`, item);
}
});
// Offer to read resource links
if (resourceLinks.length > 0) {
console.log(`\nFound ${resourceLinks.length} resource link(s). Use 'read-resource <uri>' to read their content.`);
}
}
catch (error) {
if (error instanceof types_js_1.UrlElicitationRequiredError) {
console.log('\n🔔 Elicitation Required Error Received:');
console.log(`Message: ${error.message}`);
for (const e of error.elicitations) {
await handleURLElicitation(e); // For the error handler, we discard the action result because we don't respond to an error response
}
return;
}
console.log(`Error calling tool ${name}: ${error}`);
}
}
async function cleanup() {
if (client && transport) {
try {
// First try to terminate the session gracefully
if (transport.sessionId) {
try {
console.log('Terminating session before exit...');
await transport.terminateSession();
console.log('Session terminated successfully');
}
catch (error) {
console.error('Error terminating session:', error);
}
}
// Then close the transport
await transport.close();
}
catch (error) {
console.error('Error closing transport:', error);
}
}
process.stdin.setRawMode(false);
readline.close();
console.log('\nGoodbye!');
process.exit(0);
}
async function callPaymentConfirmTool() {
console.log('Calling payment-confirm tool...');
await callTool('payment-confirm', { cartId: 'cart_123' });
}
async function callThirdPartyAuthTool() {
console.log('Calling third-party-auth tool...');
await callTool('third-party-auth', { param1: 'test' });
}
// Set up raw mode for keyboard input to capture Escape key
process.stdin.setRawMode(true);
process.stdin.on('data', async (data) => {
// Check for Escape key (27)
if (data.length === 1 && data[0] === 27) {
console.log('\nESC key pressed. Disconnecting from server...');
// Abort current operation and disconnect from server
if (client && transport) {
await disconnect();
console.log('Disconnected. Press Enter to continue.');
}
else {
console.log('Not connected to server.');
}
// Re-display the prompt
process.stdout.write('> ');
}
});
// Handle Ctrl+C
process.on('SIGINT', async () => {
console.log('\nReceived SIGINT. Cleaning up...');
await cleanup();
});
// Start the interactive client
main().catch((error) => {
console.error('Error running MCP client:', error);
process.exit(1);
});
//# sourceMappingURL=elicitationUrlExample.js.map

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export {};
//# sourceMappingURL=multipleClientsParallel.d.ts.map

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{"version":3,"file":"multipleClientsParallel.d.ts","sourceRoot":"","sources":["../../../../src/examples/client/multipleClientsParallel.ts"],"names":[],"mappings":""}

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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const index_js_1 = require("../../client/index.js");
const streamableHttp_js_1 = require("../../client/streamableHttp.js");
const types_js_1 = require("../../types.js");
/**
* Multiple Clients MCP Example
*
* This client demonstrates how to:
* 1. Create multiple MCP clients in parallel
* 2. Each client calls a single tool
* 3. Track notifications from each client independently
*/
// Command line args processing
const args = process.argv.slice(2);
const serverUrl = args[0] || 'http://localhost:3000/mcp';
async function createAndRunClient(config) {
console.log(`[${config.id}] Creating client: ${config.name}`);
const client = new index_js_1.Client({
name: config.name,
version: '1.0.0'
});
const transport = new streamableHttp_js_1.StreamableHTTPClientTransport(new URL(serverUrl));
// Set up client-specific error handler
client.onerror = error => {
console.error(`[${config.id}] Client error:`, error);
};
// Set up client-specific notification handler
client.setNotificationHandler(types_js_1.LoggingMessageNotificationSchema, notification => {
console.log(`[${config.id}] Notification: ${notification.params.data}`);
});
try {
// Connect to the server
await client.connect(transport);
console.log(`[${config.id}] Connected to MCP server`);
// Call the specified tool
console.log(`[${config.id}] Calling tool: ${config.toolName}`);
const toolRequest = {
method: 'tools/call',
params: {
name: config.toolName,
arguments: {
...config.toolArguments,
// Add client ID to arguments for identification in notifications
caller: config.id
}
}
};
const result = await client.request(toolRequest, types_js_1.CallToolResultSchema);
console.log(`[${config.id}] Tool call completed`);
// Keep the connection open for a bit to receive notifications
await new Promise(resolve => setTimeout(resolve, 5000));
// Disconnect
await transport.close();
console.log(`[${config.id}] Disconnected from MCP server`);
return { id: config.id, result };
}
catch (error) {
console.error(`[${config.id}] Error:`, error);
throw error;
}
}
async function main() {
console.log('MCP Multiple Clients Example');
console.log('============================');
console.log(`Server URL: ${serverUrl}`);
console.log('');
try {
// Define client configurations
const clientConfigs = [
{
id: 'client1',
name: 'basic-client-1',
toolName: 'start-notification-stream',
toolArguments: {
interval: 3, // 1 second between notifications
count: 5 // Send 5 notifications
}
},
{
id: 'client2',
name: 'basic-client-2',
toolName: 'start-notification-stream',
toolArguments: {
interval: 2, // 2 seconds between notifications
count: 3 // Send 3 notifications
}
},
{
id: 'client3',
name: 'basic-client-3',
toolName: 'start-notification-stream',
toolArguments: {
interval: 1, // 0.5 second between notifications
count: 8 // Send 8 notifications
}
}
];
// Start all clients in parallel
console.log(`Starting ${clientConfigs.length} clients in parallel...`);
console.log('');
const clientPromises = clientConfigs.map(config => createAndRunClient(config));
const results = await Promise.all(clientPromises);
// Display results from all clients
console.log('\n=== Final Results ===');
results.forEach(({ id, result }) => {
console.log(`\n[${id}] Tool result:`);
if (Array.isArray(result.content)) {
result.content.forEach((item) => {
if (item.type === 'text' && item.text) {
console.log(` ${item.text}`);
}
else {
console.log(` ${item.type} content:`, item);
}
});
}
else {
console.log(` Unexpected result format:`, result);
}
});
console.log('\n=== All clients completed successfully ===');
}
catch (error) {
console.error('Error running multiple clients:', error);
process.exit(1);
}
}
// Start the example
main().catch((error) => {
console.error('Error running MCP multiple clients example:', error);
process.exit(1);
});
//# sourceMappingURL=multipleClientsParallel.js.map

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export {};
//# sourceMappingURL=parallelToolCallsClient.d.ts.map

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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const index_js_1 = require("../../client/index.js");
const streamableHttp_js_1 = require("../../client/streamableHttp.js");
const types_js_1 = require("../../types.js");
/**
* Parallel Tool Calls MCP Client
*
* This client demonstrates how to:
* 1. Start multiple tool calls in parallel
* 2. Track notifications from each tool call using a caller parameter
*/
// Command line args processing
const args = process.argv.slice(2);
const serverUrl = args[0] || 'http://localhost:3000/mcp';
async function main() {
console.log('MCP Parallel Tool Calls Client');
console.log('==============================');
console.log(`Connecting to server at: ${serverUrl}`);
let client;
let transport;
try {
// Create client with streamable HTTP transport
client = new index_js_1.Client({
name: 'parallel-tool-calls-client',
version: '1.0.0'
});
client.onerror = error => {
console.error('Client error:', error);
};
// Connect to the server
transport = new streamableHttp_js_1.StreamableHTTPClientTransport(new URL(serverUrl));
await client.connect(transport);
console.log('Successfully connected to MCP server');
// Set up notification handler with caller identification
client.setNotificationHandler(types_js_1.LoggingMessageNotificationSchema, notification => {
console.log(`Notification: ${notification.params.data}`);
});
console.log('List tools');
const toolsRequest = await listTools(client);
console.log('Tools: ', toolsRequest);
// 2. Start multiple notification tools in parallel
console.log('\n=== Starting Multiple Notification Streams in Parallel ===');
const toolResults = await startParallelNotificationTools(client);
// Log the results from each tool call
for (const [caller, result] of Object.entries(toolResults)) {
console.log(`\n=== Tool result for ${caller} ===`);
result.content.forEach((item) => {
if (item.type === 'text') {
console.log(` ${item.text}`);
}
else {
console.log(` ${item.type} content:`, item);
}
});
}
// 3. Wait for all notifications (10 seconds)
console.log('\n=== Waiting for all notifications ===');
await new Promise(resolve => setTimeout(resolve, 10000));
// 4. Disconnect
console.log('\n=== Disconnecting ===');
await transport.close();
console.log('Disconnected from MCP server');
}
catch (error) {
console.error('Error running client:', error);
process.exit(1);
}
}
/**
* List available tools on the server
*/
async function listTools(client) {
try {
const toolsRequest = {
method: 'tools/list',
params: {}
};
const toolsResult = await client.request(toolsRequest, types_js_1.ListToolsResultSchema);
console.log('Available tools:');
if (toolsResult.tools.length === 0) {
console.log(' No tools available');
}
else {
for (const tool of toolsResult.tools) {
console.log(` - ${tool.name}: ${tool.description}`);
}
}
}
catch (error) {
console.log(`Tools not supported by this server: ${error}`);
}
}
/**
* Start multiple notification tools in parallel with different configurations
* Each tool call includes a caller parameter to identify its notifications
*/
async function startParallelNotificationTools(client) {
try {
// Define multiple tool calls with different configurations
const toolCalls = [
{
caller: 'fast-notifier',
request: {
method: 'tools/call',
params: {
name: 'start-notification-stream',
arguments: {
interval: 2, // 0.5 second between notifications
count: 10, // Send 10 notifications
caller: 'fast-notifier' // Identify this tool call
}
}
}
},
{
caller: 'slow-notifier',
request: {
method: 'tools/call',
params: {
name: 'start-notification-stream',
arguments: {
interval: 5, // 2 seconds between notifications
count: 5, // Send 5 notifications
caller: 'slow-notifier' // Identify this tool call
}
}
}
},
{
caller: 'burst-notifier',
request: {
method: 'tools/call',
params: {
name: 'start-notification-stream',
arguments: {
interval: 1, // 0.1 second between notifications
count: 3, // Send just 3 notifications
caller: 'burst-notifier' // Identify this tool call
}
}
}
}
];
console.log(`Starting ${toolCalls.length} notification tools in parallel...`);
// Start all tool calls in parallel
const toolPromises = toolCalls.map(({ caller, request }) => {
console.log(`Starting tool call for ${caller}...`);
return client
.request(request, types_js_1.CallToolResultSchema)
.then(result => ({ caller, result }))
.catch(error => {
console.error(`Error in tool call for ${caller}:`, error);
throw error;
});
});
// Wait for all tool calls to complete
const results = await Promise.all(toolPromises);
// Organize results by caller
const resultsByTool = {};
results.forEach(({ caller, result }) => {
resultsByTool[caller] = result;
});
return resultsByTool;
}
catch (error) {
console.error(`Error starting parallel notification tools:`, error);
throw error;
}
}
// Start the client
main().catch((error) => {
console.error('Error running MCP client:', error);
process.exit(1);
});
//# sourceMappingURL=parallelToolCallsClient.js.map

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node_modules/@modelcontextprotocol/sdk/dist/cjs/examples/client/simpleClientCredentials.d.ts generated vendored Normal file
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#!/usr/bin/env node
/**
* Example demonstrating client_credentials grant for machine-to-machine authentication.
*
* Supports two authentication methods based on environment variables:
*
* 1. client_secret_basic (default):
* MCP_CLIENT_ID - OAuth client ID (required)
* MCP_CLIENT_SECRET - OAuth client secret (required)
*
* 2. private_key_jwt (when MCP_CLIENT_PRIVATE_KEY_PEM is set):
* MCP_CLIENT_ID - OAuth client ID (required)
* MCP_CLIENT_PRIVATE_KEY_PEM - PEM-encoded private key for JWT signing (required)
* MCP_CLIENT_ALGORITHM - Signing algorithm (default: RS256)
*
* Common:
* MCP_SERVER_URL - Server URL (default: http://localhost:3000/mcp)
*/
export {};
//# sourceMappingURL=simpleClientCredentials.d.ts.map

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node_modules/@modelcontextprotocol/sdk/dist/cjs/examples/client/simpleClientCredentials.js generated vendored Normal file
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#!/usr/bin/env node
"use strict";
/**
* Example demonstrating client_credentials grant for machine-to-machine authentication.
*
* Supports two authentication methods based on environment variables:
*
* 1. client_secret_basic (default):
* MCP_CLIENT_ID - OAuth client ID (required)
* MCP_CLIENT_SECRET - OAuth client secret (required)
*
* 2. private_key_jwt (when MCP_CLIENT_PRIVATE_KEY_PEM is set):
* MCP_CLIENT_ID - OAuth client ID (required)
* MCP_CLIENT_PRIVATE_KEY_PEM - PEM-encoded private key for JWT signing (required)
* MCP_CLIENT_ALGORITHM - Signing algorithm (default: RS256)
*
* Common:
* MCP_SERVER_URL - Server URL (default: http://localhost:3000/mcp)
*/
Object.defineProperty(exports, "__esModule", { value: true });
const index_js_1 = require("../../client/index.js");
const streamableHttp_js_1 = require("../../client/streamableHttp.js");
const auth_extensions_js_1 = require("../../client/auth-extensions.js");
const DEFAULT_SERVER_URL = process.env.MCP_SERVER_URL || 'http://localhost:3000/mcp';
function createProvider() {
const clientId = process.env.MCP_CLIENT_ID;
if (!clientId) {
console.error('MCP_CLIENT_ID environment variable is required');
process.exit(1);
}
// If private key is provided, use private_key_jwt authentication
const privateKeyPem = process.env.MCP_CLIENT_PRIVATE_KEY_PEM;
if (privateKeyPem) {
const algorithm = process.env.MCP_CLIENT_ALGORITHM || 'RS256';
console.log('Using private_key_jwt authentication');
return new auth_extensions_js_1.PrivateKeyJwtProvider({
clientId,
privateKey: privateKeyPem,
algorithm
});
}
// Otherwise, use client_secret_basic authentication
const clientSecret = process.env.MCP_CLIENT_SECRET;
if (!clientSecret) {
console.error('MCP_CLIENT_SECRET or MCP_CLIENT_PRIVATE_KEY_PEM environment variable is required');
process.exit(1);
}
console.log('Using client_secret_basic authentication');
return new auth_extensions_js_1.ClientCredentialsProvider({
clientId,
clientSecret
});
}
async function main() {
const provider = createProvider();
const client = new index_js_1.Client({ name: 'client-credentials-example', version: '1.0.0' }, { capabilities: {} });
const transport = new streamableHttp_js_1.StreamableHTTPClientTransport(new URL(DEFAULT_SERVER_URL), {
authProvider: provider
});
await client.connect(transport);
console.log('Connected successfully.');
const tools = await client.listTools();
console.log('Available tools:', tools.tools.map(t => t.name).join(', ') || '(none)');
await transport.close();
}
main().catch(err => {
console.error(err);
process.exit(1);
});
//# sourceMappingURL=simpleClientCredentials.js.map

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3
node_modules/@modelcontextprotocol/sdk/dist/cjs/examples/client/simpleOAuthClient.d.ts generated vendored Normal file
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#!/usr/bin/env node
export {};
//# sourceMappingURL=simpleOAuthClient.d.ts.map

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node_modules/@modelcontextprotocol/sdk/dist/cjs/examples/client/simpleOAuthClient.d.ts.map generated vendored Normal file
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{"version":3,"file":"simpleOAuthClient.d.ts","sourceRoot":"","sources":["../../../../src/examples/client/simpleOAuthClient.ts"],"names":[],"mappings":""}

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node_modules/@modelcontextprotocol/sdk/dist/cjs/examples/client/simpleOAuthClient.js generated vendored Normal file
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#!/usr/bin/env node
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const node_http_1 = require("node:http");
const node_readline_1 = require("node:readline");
const node_url_1 = require("node:url");
const index_js_1 = require("../../client/index.js");
const streamableHttp_js_1 = require("../../client/streamableHttp.js");
const types_js_1 = require("../../types.js");
const auth_js_1 = require("../../client/auth.js");
const simpleOAuthClientProvider_js_1 = require("./simpleOAuthClientProvider.js");
// Configuration
const DEFAULT_SERVER_URL = 'http://localhost:3000/mcp';
const CALLBACK_PORT = 8090; // Use different port than auth server (3001)
const CALLBACK_URL = `http://localhost:${CALLBACK_PORT}/callback`;
/**
* Interactive MCP client with OAuth authentication
* Demonstrates the complete OAuth flow with browser-based authorization
*/
class InteractiveOAuthClient {
constructor(serverUrl, clientMetadataUrl) {
this.serverUrl = serverUrl;
this.clientMetadataUrl = clientMetadataUrl;
this.client = null;
this.rl = (0, node_readline_1.createInterface)({
input: process.stdin,
output: process.stdout
});
}
/**
* Prompts user for input via readline
*/
async question(query) {
return new Promise(resolve => {
this.rl.question(query, resolve);
});
}
/**
* Example OAuth callback handler - in production, use a more robust approach
* for handling callbacks and storing tokens
*/
/**
* Starts a temporary HTTP server to receive the OAuth callback
*/
async waitForOAuthCallback() {
return new Promise((resolve, reject) => {
const server = (0, node_http_1.createServer)((req, res) => {
// Ignore favicon requests
if (req.url === '/favicon.ico') {
res.writeHead(404);
res.end();
return;
}
console.log(`📥 Received callback: ${req.url}`);
const parsedUrl = new node_url_1.URL(req.url || '', 'http://localhost');
const code = parsedUrl.searchParams.get('code');
const error = parsedUrl.searchParams.get('error');
if (code) {
console.log(`✅ Authorization code received: ${code?.substring(0, 10)}...`);
res.writeHead(200, { 'Content-Type': 'text/html' });
res.end(`
<html>
<body>
<h1>Authorization Successful!</h1>
<p>You can close this window and return to the terminal.</p>
<script>setTimeout(() => window.close(), 2000);</script>
</body>
</html>
`);
resolve(code);
setTimeout(() => server.close(), 3000);
}
else if (error) {
console.log(`❌ Authorization error: ${error}`);
res.writeHead(400, { 'Content-Type': 'text/html' });
res.end(`
<html>
<body>
<h1>Authorization Failed</h1>
<p>Error: ${error}</p>
</body>
</html>
`);
reject(new Error(`OAuth authorization failed: ${error}`));
}
else {
console.log(`❌ No authorization code or error in callback`);
res.writeHead(400);
res.end('Bad request');
reject(new Error('No authorization code provided'));
}
});
server.listen(CALLBACK_PORT, () => {
console.log(`OAuth callback server started on http://localhost:${CALLBACK_PORT}`);
});
});
}
async attemptConnection(oauthProvider) {
console.log('🚢 Creating transport with OAuth provider...');
const baseUrl = new node_url_1.URL(this.serverUrl);
const transport = new streamableHttp_js_1.StreamableHTTPClientTransport(baseUrl, {
authProvider: oauthProvider
});
console.log('🚢 Transport created');
try {
console.log('🔌 Attempting connection (this will trigger OAuth redirect)...');
await this.client.connect(transport);
console.log('✅ Connected successfully');
}
catch (error) {
if (error instanceof auth_js_1.UnauthorizedError) {
console.log('🔐 OAuth required - waiting for authorization...');
const callbackPromise = this.waitForOAuthCallback();
const authCode = await callbackPromise;
await transport.finishAuth(authCode);
console.log('🔐 Authorization code received:', authCode);
console.log('🔌 Reconnecting with authenticated transport...');
await this.attemptConnection(oauthProvider);
}
else {
console.error('❌ Connection failed with non-auth error:', error);
throw error;
}
}
}
/**
* Establishes connection to the MCP server with OAuth authentication
*/
async connect() {
console.log(`🔗 Attempting to connect to ${this.serverUrl}...`);
const clientMetadata = {
client_name: 'Simple OAuth MCP Client',
redirect_uris: [CALLBACK_URL],
grant_types: ['authorization_code', 'refresh_token'],
response_types: ['code'],
token_endpoint_auth_method: 'client_secret_post'
};
console.log('🔐 Creating OAuth provider...');
const oauthProvider = new simpleOAuthClientProvider_js_1.InMemoryOAuthClientProvider(CALLBACK_URL, clientMetadata, (redirectUrl) => {
console.log(`\n🔗 Please open this URL in your browser to authorize:\n ${redirectUrl.toString()}`);
}, this.clientMetadataUrl);
console.log('🔐 OAuth provider created');
console.log('👤 Creating MCP client...');
this.client = new index_js_1.Client({
name: 'simple-oauth-client',
version: '1.0.0'
}, { capabilities: {} });
console.log('👤 Client created');
console.log('🔐 Starting OAuth flow...');
await this.attemptConnection(oauthProvider);
// Start interactive loop
await this.interactiveLoop();
}
/**
* Main interactive loop for user commands
*/
async interactiveLoop() {
console.log('\n🎯 Interactive MCP Client with OAuth');
console.log('Commands:');
console.log(' list - List available tools');
console.log(' call <tool_name> [args] - Call a tool');
console.log(' stream <tool_name> [args] - Call a tool with streaming (shows task status)');
console.log(' quit - Exit the client');
console.log();
while (true) {
try {
const command = await this.question('mcp> ');
if (!command.trim()) {
continue;
}
if (command === 'quit') {
console.log('\n👋 Goodbye!');
this.close();
process.exit(0);
}
else if (command === 'list') {
await this.listTools();
}
else if (command.startsWith('call ')) {
await this.handleCallTool(command);
}
else if (command.startsWith('stream ')) {
await this.handleStreamTool(command);
}
else {
console.log("❌ Unknown command. Try 'list', 'call <tool_name>', 'stream <tool_name>', or 'quit'");
}
}
catch (error) {
if (error instanceof Error && error.message === 'SIGINT') {
console.log('\n\n👋 Goodbye!');
break;
}
console.error('❌ Error:', error);
}
}
}
async listTools() {
if (!this.client) {
console.log('❌ Not connected to server');
return;
}
try {
const request = {
method: 'tools/list',
params: {}
};
const result = await this.client.request(request, types_js_1.ListToolsResultSchema);
if (result.tools && result.tools.length > 0) {
console.log('\n📋 Available tools:');
result.tools.forEach((tool, index) => {
console.log(`${index + 1}. ${tool.name}`);
if (tool.description) {
console.log(` Description: ${tool.description}`);
}
console.log();
});
}
else {
console.log('No tools available');
}
}
catch (error) {
console.error('❌ Failed to list tools:', error);
}
}
async handleCallTool(command) {
const parts = command.split(/\s+/);
const toolName = parts[1];
if (!toolName) {
console.log('❌ Please specify a tool name');
return;
}
// Parse arguments (simple JSON-like format)
let toolArgs = {};
if (parts.length > 2) {
const argsString = parts.slice(2).join(' ');
try {
toolArgs = JSON.parse(argsString);
}
catch {
console.log('❌ Invalid arguments format (expected JSON)');
return;
}
}
await this.callTool(toolName, toolArgs);
}
async callTool(toolName, toolArgs) {
if (!this.client) {
console.log('❌ Not connected to server');
return;
}
try {
const request = {
method: 'tools/call',
params: {
name: toolName,
arguments: toolArgs
}
};
const result = await this.client.request(request, types_js_1.CallToolResultSchema);
console.log(`\n🔧 Tool '${toolName}' result:`);
if (result.content) {
result.content.forEach(content => {
if (content.type === 'text') {
console.log(content.text);
}
else {
console.log(content);
}
});
}
else {
console.log(result);
}
}
catch (error) {
console.error(`❌ Failed to call tool '${toolName}':`, error);
}
}
async handleStreamTool(command) {
const parts = command.split(/\s+/);
const toolName = parts[1];
if (!toolName) {
console.log('❌ Please specify a tool name');
return;
}
// Parse arguments (simple JSON-like format)
let toolArgs = {};
if (parts.length > 2) {
const argsString = parts.slice(2).join(' ');
try {
toolArgs = JSON.parse(argsString);
}
catch {
console.log('❌ Invalid arguments format (expected JSON)');
return;
}
}
await this.streamTool(toolName, toolArgs);
}
async streamTool(toolName, toolArgs) {
if (!this.client) {
console.log('❌ Not connected to server');
return;
}
try {
// Using the experimental tasks API - WARNING: may change without notice
console.log(`\n🔧 Streaming tool '${toolName}'...`);
const stream = this.client.experimental.tasks.callToolStream({
name: toolName,
arguments: toolArgs
}, types_js_1.CallToolResultSchema, {
task: {
taskId: `task-${Date.now()}`,
ttl: 60000
}
});
// Iterate through all messages yielded by the generator
for await (const message of stream) {
switch (message.type) {
case 'taskCreated':
console.log(`✓ Task created: ${message.task.taskId}`);
break;
case 'taskStatus':
console.log(`⟳ Status: ${message.task.status}`);
if (message.task.statusMessage) {
console.log(` ${message.task.statusMessage}`);
}
break;
case 'result':
console.log('✓ Completed!');
message.result.content.forEach(content => {
if (content.type === 'text') {
console.log(content.text);
}
else {
console.log(content);
}
});
break;
case 'error':
console.log('✗ Error:');
console.log(` ${message.error.message}`);
break;
}
}
}
catch (error) {
console.error(`❌ Failed to stream tool '${toolName}':`, error);
}
}
close() {
this.rl.close();
if (this.client) {
// Note: Client doesn't have a close method in the current implementation
// This would typically close the transport connection
}
}
}
/**
* Main entry point
*/
async function main() {
const args = process.argv.slice(2);
const serverUrl = args[0] || DEFAULT_SERVER_URL;
const clientMetadataUrl = args[1];
console.log('🚀 Simple MCP OAuth Client');
console.log(`Connecting to: ${serverUrl}`);
if (clientMetadataUrl) {
console.log(`Client Metadata URL: ${clientMetadataUrl}`);
}
console.log();
const client = new InteractiveOAuthClient(serverUrl, clientMetadataUrl);
// Handle graceful shutdown
process.on('SIGINT', () => {
console.log('\n\n👋 Goodbye!');
client.close();
process.exit(0);
});
try {
await client.connect();
}
catch (error) {
console.error('Failed to start client:', error);
process.exit(1);
}
finally {
client.close();
}
}
// Run if this file is executed directly
main().catch(error => {
console.error('Unhandled error:', error);
process.exit(1);
});
//# sourceMappingURL=simpleOAuthClient.js.map

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import { OAuthClientProvider } from '../../client/auth.js';
import { OAuthClientInformationMixed, OAuthClientMetadata, OAuthTokens } from '../../shared/auth.js';
/**
* In-memory OAuth client provider for demonstration purposes
* In production, you should persist tokens securely
*/
export declare class InMemoryOAuthClientProvider implements OAuthClientProvider {
private readonly _redirectUrl;
private readonly _clientMetadata;
readonly clientMetadataUrl?: string | undefined;
private _clientInformation?;
private _tokens?;
private _codeVerifier?;
constructor(_redirectUrl: string | URL, _clientMetadata: OAuthClientMetadata, onRedirect?: (url: URL) => void, clientMetadataUrl?: string | undefined);
private _onRedirect;
get redirectUrl(): string | URL;
get clientMetadata(): OAuthClientMetadata;
clientInformation(): OAuthClientInformationMixed | undefined;
saveClientInformation(clientInformation: OAuthClientInformationMixed): void;
tokens(): OAuthTokens | undefined;
saveTokens(tokens: OAuthTokens): void;
redirectToAuthorization(authorizationUrl: URL): void;
saveCodeVerifier(codeVerifier: string): void;
codeVerifier(): string;
}
//# sourceMappingURL=simpleOAuthClientProvider.d.ts.map

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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.InMemoryOAuthClientProvider = void 0;
/**
* In-memory OAuth client provider for demonstration purposes
* In production, you should persist tokens securely
*/
class InMemoryOAuthClientProvider {
constructor(_redirectUrl, _clientMetadata, onRedirect, clientMetadataUrl) {
this._redirectUrl = _redirectUrl;
this._clientMetadata = _clientMetadata;
this.clientMetadataUrl = clientMetadataUrl;
this._onRedirect =
onRedirect ||
(url => {
console.log(`Redirect to: ${url.toString()}`);
});
}
get redirectUrl() {
return this._redirectUrl;
}
get clientMetadata() {
return this._clientMetadata;
}
clientInformation() {
return this._clientInformation;
}
saveClientInformation(clientInformation) {
this._clientInformation = clientInformation;
}
tokens() {
return this._tokens;
}
saveTokens(tokens) {
this._tokens = tokens;
}
redirectToAuthorization(authorizationUrl) {
this._onRedirect(authorizationUrl);
}
saveCodeVerifier(codeVerifier) {
this._codeVerifier = codeVerifier;
}
codeVerifier() {
if (!this._codeVerifier) {
throw new Error('No code verifier saved');
}
return this._codeVerifier;
}
}
exports.InMemoryOAuthClientProvider = InMemoryOAuthClientProvider;
//# sourceMappingURL=simpleOAuthClientProvider.js.map

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export {};
//# sourceMappingURL=simpleStreamableHttp.d.ts.map

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{"version":3,"file":"simpleStreamableHttp.d.ts","sourceRoot":"","sources":["../../../../src/examples/client/simpleStreamableHttp.ts"],"names":[],"mappings":""}

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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const index_js_1 = require("../../client/index.js");
const streamableHttp_js_1 = require("../../client/streamableHttp.js");
const node_readline_1 = require("node:readline");
const types_js_1 = require("../../types.js");
const in_memory_js_1 = require("../../experimental/tasks/stores/in-memory.js");
const metadataUtils_js_1 = require("../../shared/metadataUtils.js");
const ajv_1 = require("ajv");
// Create readline interface for user input
const readline = (0, node_readline_1.createInterface)({
input: process.stdin,
output: process.stdout
});
// Track received notifications for debugging resumability
let notificationCount = 0;
// Global client and transport for interactive commands
let client = null;
let transport = null;
let serverUrl = 'http://localhost:3000/mcp';
let notificationsToolLastEventId = undefined;
let sessionId = undefined;
async function main() {
console.log('MCP Interactive Client');
console.log('=====================');
// Connect to server immediately with default settings
await connect();
// Print help and start the command loop
printHelp();
commandLoop();
}
function printHelp() {
console.log('\nAvailable commands:');
console.log(' connect [url] - Connect to MCP server (default: http://localhost:3000/mcp)');
console.log(' disconnect - Disconnect from server');
console.log(' terminate-session - Terminate the current session');
console.log(' reconnect - Reconnect to the server');
console.log(' list-tools - List available tools');
console.log(' call-tool <name> [args] - Call a tool with optional JSON arguments');
console.log(' call-tool-task <name> [args] - Call a tool with task-based execution (example: call-tool-task delay {"duration":3000})');
console.log(' greet [name] - Call the greet tool');
console.log(' multi-greet [name] - Call the multi-greet tool with notifications');
console.log(' collect-info [type] - Test form elicitation with collect-user-info tool (contact/preferences/feedback)');
console.log(' collect-info-task [type] - Test bidirectional task support (server+client tasks) with elicitation');
console.log(' start-notifications [interval] [count] - Start periodic notifications');
console.log(' run-notifications-tool-with-resumability [interval] [count] - Run notification tool with resumability');
console.log(' list-prompts - List available prompts');
console.log(' get-prompt [name] [args] - Get a prompt with optional JSON arguments');
console.log(' list-resources - List available resources');
console.log(' read-resource <uri> - Read a specific resource by URI');
console.log(' help - Show this help');
console.log(' quit - Exit the program');
}
function commandLoop() {
readline.question('\n> ', async (input) => {
const args = input.trim().split(/\s+/);
const command = args[0]?.toLowerCase();
try {
switch (command) {
case 'connect':
await connect(args[1]);
break;
case 'disconnect':
await disconnect();
break;
case 'terminate-session':
await terminateSession();
break;
case 'reconnect':
await reconnect();
break;
case 'list-tools':
await listTools();
break;
case 'call-tool':
if (args.length < 2) {
console.log('Usage: call-tool <name> [args]');
}
else {
const toolName = args[1];
let toolArgs = {};
if (args.length > 2) {
try {
toolArgs = JSON.parse(args.slice(2).join(' '));
}
catch {
console.log('Invalid JSON arguments. Using empty args.');
}
}
await callTool(toolName, toolArgs);
}
break;
case 'greet':
await callGreetTool(args[1] || 'MCP User');
break;
case 'multi-greet':
await callMultiGreetTool(args[1] || 'MCP User');
break;
case 'collect-info':
await callCollectInfoTool(args[1] || 'contact');
break;
case 'collect-info-task': {
await callCollectInfoWithTask(args[1] || 'contact');
break;
}
case 'start-notifications': {
const interval = args[1] ? parseInt(args[1], 10) : 2000;
const count = args[2] ? parseInt(args[2], 10) : 10;
await startNotifications(interval, count);
break;
}
case 'run-notifications-tool-with-resumability': {
const interval = args[1] ? parseInt(args[1], 10) : 2000;
const count = args[2] ? parseInt(args[2], 10) : 10;
await runNotificationsToolWithResumability(interval, count);
break;
}
case 'call-tool-task':
if (args.length < 2) {
console.log('Usage: call-tool-task <name> [args]');
}
else {
const toolName = args[1];
let toolArgs = {};
if (args.length > 2) {
try {
toolArgs = JSON.parse(args.slice(2).join(' '));
}
catch {
console.log('Invalid JSON arguments. Using empty args.');
}
}
await callToolTask(toolName, toolArgs);
}
break;
case 'list-prompts':
await listPrompts();
break;
case 'get-prompt':
if (args.length < 2) {
console.log('Usage: get-prompt <name> [args]');
}
else {
const promptName = args[1];
let promptArgs = {};
if (args.length > 2) {
try {
promptArgs = JSON.parse(args.slice(2).join(' '));
}
catch {
console.log('Invalid JSON arguments. Using empty args.');
}
}
await getPrompt(promptName, promptArgs);
}
break;
case 'list-resources':
await listResources();
break;
case 'read-resource':
if (args.length < 2) {
console.log('Usage: read-resource <uri>');
}
else {
await readResource(args[1]);
}
break;
case 'help':
printHelp();
break;
case 'quit':
case 'exit':
await cleanup();
return;
default:
if (command) {
console.log(`Unknown command: ${command}`);
}
break;
}
}
catch (error) {
console.error(`Error executing command: ${error}`);
}
// Continue the command loop
commandLoop();
});
}
async function connect(url) {
if (client) {
console.log('Already connected. Disconnect first.');
return;
}
if (url) {
serverUrl = url;
}
console.log(`Connecting to ${serverUrl}...`);
try {
// Create task store for client-side task support
const clientTaskStore = new in_memory_js_1.InMemoryTaskStore();
// Create a new client with form elicitation capability and task support
client = new index_js_1.Client({
name: 'example-client',
version: '1.0.0'
}, {
capabilities: {
elicitation: {
form: {}
},
tasks: {
requests: {
elicitation: {
create: {}
}
}
}
},
taskStore: clientTaskStore
});
client.onerror = error => {
console.error('\x1b[31mClient error:', error, '\x1b[0m');
};
// Set up elicitation request handler with proper validation and task support
client.setRequestHandler(types_js_1.ElicitRequestSchema, async (request, extra) => {
if (request.params.mode !== 'form') {
throw new types_js_1.McpError(types_js_1.ErrorCode.InvalidParams, `Unsupported elicitation mode: ${request.params.mode}`);
}
console.log('\n🔔 Elicitation (form) Request Received:');
console.log(`Message: ${request.params.message}`);
console.log(`Related Task: ${request.params._meta?.[types_js_1.RELATED_TASK_META_KEY]?.taskId}`);
console.log(`Task Creation Requested: ${request.params.task ? 'yes' : 'no'}`);
console.log('Requested Schema:');
console.log(JSON.stringify(request.params.requestedSchema, null, 2));
// Helper to return result, optionally creating a task if requested
const returnResult = async (result) => {
if (request.params.task && extra.taskStore) {
// Create a task and store the result
const task = await extra.taskStore.createTask({ ttl: extra.taskRequestedTtl });
await extra.taskStore.storeTaskResult(task.taskId, 'completed', result);
console.log(`📋 Created client-side task: ${task.taskId}`);
return { task };
}
return result;
};
const schema = request.params.requestedSchema;
const properties = schema.properties;
const required = schema.required || [];
// Set up AJV validator for the requested schema
const ajv = new ajv_1.Ajv();
const validate = ajv.compile(schema);
let attempts = 0;
const maxAttempts = 3;
while (attempts < maxAttempts) {
attempts++;
console.log(`\nPlease provide the following information (attempt ${attempts}/${maxAttempts}):`);
const content = {};
let inputCancelled = false;
// Collect input for each field
for (const [fieldName, fieldSchema] of Object.entries(properties)) {
const field = fieldSchema;
const isRequired = required.includes(fieldName);
let prompt = `${field.title || fieldName}`;
// Add helpful information to the prompt
if (field.description) {
prompt += ` (${field.description})`;
}
if (field.enum) {
prompt += ` [options: ${field.enum.join(', ')}]`;
}
if (field.type === 'number' || field.type === 'integer') {
if (field.minimum !== undefined && field.maximum !== undefined) {
prompt += ` [${field.minimum}-${field.maximum}]`;
}
else if (field.minimum !== undefined) {
prompt += ` [min: ${field.minimum}]`;
}
else if (field.maximum !== undefined) {
prompt += ` [max: ${field.maximum}]`;
}
}
if (field.type === 'string' && field.format) {
prompt += ` [format: ${field.format}]`;
}
if (isRequired) {
prompt += ' *required*';
}
if (field.default !== undefined) {
prompt += ` [default: ${field.default}]`;
}
prompt += ': ';
const answer = await new Promise(resolve => {
readline.question(prompt, input => {
resolve(input.trim());
});
});
// Check for cancellation
if (answer.toLowerCase() === 'cancel' || answer.toLowerCase() === 'c') {
inputCancelled = true;
break;
}
// Parse and validate the input
try {
if (answer === '' && field.default !== undefined) {
content[fieldName] = field.default;
}
else if (answer === '' && !isRequired) {
// Skip optional empty fields
continue;
}
else if (answer === '') {
throw new Error(`${fieldName} is required`);
}
else {
// Parse the value based on type
let parsedValue;
if (field.type === 'boolean') {
parsedValue = answer.toLowerCase() === 'true' || answer.toLowerCase() === 'yes' || answer === '1';
}
else if (field.type === 'number') {
parsedValue = parseFloat(answer);
if (isNaN(parsedValue)) {
throw new Error(`${fieldName} must be a valid number`);
}
}
else if (field.type === 'integer') {
parsedValue = parseInt(answer, 10);
if (isNaN(parsedValue)) {
throw new Error(`${fieldName} must be a valid integer`);
}
}
else if (field.enum) {
if (!field.enum.includes(answer)) {
throw new Error(`${fieldName} must be one of: ${field.enum.join(', ')}`);
}
parsedValue = answer;
}
else {
parsedValue = answer;
}
content[fieldName] = parsedValue;
}
}
catch (error) {
console.log(`❌ Error: ${error}`);
// Continue to next attempt
break;
}
}
if (inputCancelled) {
return returnResult({ action: 'cancel' });
}
// If we didn't complete all fields due to an error, try again
if (Object.keys(content).length !==
Object.keys(properties).filter(name => required.includes(name) || content[name] !== undefined).length) {
if (attempts < maxAttempts) {
console.log('Please try again...');
continue;
}
else {
console.log('Maximum attempts reached. Declining request.');
return returnResult({ action: 'decline' });
}
}
// Validate the complete object against the schema
const isValid = validate(content);
if (!isValid) {
console.log('❌ Validation errors:');
validate.errors?.forEach(error => {
console.log(` - ${error.instancePath || 'root'}: ${error.message}`);
});
if (attempts < maxAttempts) {
console.log('Please correct the errors and try again...');
continue;
}
else {
console.log('Maximum attempts reached. Declining request.');
return returnResult({ action: 'decline' });
}
}
// Show the collected data and ask for confirmation
console.log('\n✅ Collected data:');
console.log(JSON.stringify(content, null, 2));
const confirmAnswer = await new Promise(resolve => {
readline.question('\nSubmit this information? (yes/no/cancel): ', input => {
resolve(input.trim().toLowerCase());
});
});
switch (confirmAnswer) {
case 'yes':
case 'y': {
return returnResult({
action: 'accept',
content: content
});
}
case 'cancel':
case 'c': {
return returnResult({ action: 'cancel' });
}
case 'no':
case 'n': {
if (attempts < maxAttempts) {
console.log('Please re-enter the information...');
continue;
}
else {
return returnResult({ action: 'decline' });
}
break;
}
}
}
console.log('Maximum attempts reached. Declining request.');
return returnResult({ action: 'decline' });
});
transport = new streamableHttp_js_1.StreamableHTTPClientTransport(new URL(serverUrl), {
sessionId: sessionId
});
// Set up notification handlers
client.setNotificationHandler(types_js_1.LoggingMessageNotificationSchema, notification => {
notificationCount++;
console.log(`\nNotification #${notificationCount}: ${notification.params.level} - ${notification.params.data}`);
// Re-display the prompt
process.stdout.write('> ');
});
client.setNotificationHandler(types_js_1.ResourceListChangedNotificationSchema, async (_) => {
console.log(`\nResource list changed notification received!`);
try {
if (!client) {
console.log('Client disconnected, cannot fetch resources');
return;
}
const resourcesResult = await client.request({
method: 'resources/list',
params: {}
}, types_js_1.ListResourcesResultSchema);
console.log('Available resources count:', resourcesResult.resources.length);
}
catch {
console.log('Failed to list resources after change notification');
}
// Re-display the prompt
process.stdout.write('> ');
});
// Connect the client
await client.connect(transport);
sessionId = transport.sessionId;
console.log('Transport created with session ID:', sessionId);
console.log('Connected to MCP server');
}
catch (error) {
console.error('Failed to connect:', error);
client = null;
transport = null;
}
}
async function disconnect() {
if (!client || !transport) {
console.log('Not connected.');
return;
}
try {
await transport.close();
console.log('Disconnected from MCP server');
client = null;
transport = null;
}
catch (error) {
console.error('Error disconnecting:', error);
}
}
async function terminateSession() {
if (!client || !transport) {
console.log('Not connected.');
return;
}
try {
console.log('Terminating session with ID:', transport.sessionId);
await transport.terminateSession();
console.log('Session terminated successfully');
// Check if sessionId was cleared after termination
if (!transport.sessionId) {
console.log('Session ID has been cleared');
sessionId = undefined;
// Also close the transport and clear client objects
await transport.close();
console.log('Transport closed after session termination');
client = null;
transport = null;
}
else {
console.log('Server responded with 405 Method Not Allowed (session termination not supported)');
console.log('Session ID is still active:', transport.sessionId);
}
}
catch (error) {
console.error('Error terminating session:', error);
}
}
async function reconnect() {
if (client) {
await disconnect();
}
await connect();
}
async function listTools() {
if (!client) {
console.log('Not connected to server.');
return;
}
try {
const toolsRequest = {
method: 'tools/list',
params: {}
};
const toolsResult = await client.request(toolsRequest, types_js_1.ListToolsResultSchema);
console.log('Available tools:');
if (toolsResult.tools.length === 0) {
console.log(' No tools available');
}
else {
for (const tool of toolsResult.tools) {
console.log(` - id: ${tool.name}, name: ${(0, metadataUtils_js_1.getDisplayName)(tool)}, description: ${tool.description}`);
}
}
}
catch (error) {
console.log(`Tools not supported by this server (${error})`);
}
}
async function callTool(name, args) {
if (!client) {
console.log('Not connected to server.');
return;
}
try {
const request = {
method: 'tools/call',
params: {
name,
arguments: args
}
};
console.log(`Calling tool '${name}' with args:`, args);
const result = await client.request(request, types_js_1.CallToolResultSchema);
console.log('Tool result:');
const resourceLinks = [];
result.content.forEach(item => {
if (item.type === 'text') {
console.log(` ${item.text}`);
}
else if (item.type === 'resource_link') {
const resourceLink = item;
resourceLinks.push(resourceLink);
console.log(` 📁 Resource Link: ${resourceLink.name}`);
console.log(` URI: ${resourceLink.uri}`);
if (resourceLink.mimeType) {
console.log(` Type: ${resourceLink.mimeType}`);
}
if (resourceLink.description) {
console.log(` Description: ${resourceLink.description}`);
}
}
else if (item.type === 'resource') {
console.log(` [Embedded Resource: ${item.resource.uri}]`);
}
else if (item.type === 'image') {
console.log(` [Image: ${item.mimeType}]`);
}
else if (item.type === 'audio') {
console.log(` [Audio: ${item.mimeType}]`);
}
else {
console.log(` [Unknown content type]:`, item);
}
});
// Offer to read resource links
if (resourceLinks.length > 0) {
console.log(`\nFound ${resourceLinks.length} resource link(s). Use 'read-resource <uri>' to read their content.`);
}
}
catch (error) {
console.log(`Error calling tool ${name}: ${error}`);
}
}
async function callGreetTool(name) {
await callTool('greet', { name });
}
async function callMultiGreetTool(name) {
console.log('Calling multi-greet tool with notifications...');
await callTool('multi-greet', { name });
}
async function callCollectInfoTool(infoType) {
console.log(`Testing form elicitation with collect-user-info tool (${infoType})...`);
await callTool('collect-user-info', { infoType });
}
async function callCollectInfoWithTask(infoType) {
console.log(`\n🔄 Testing bidirectional task support with collect-user-info-task tool (${infoType})...`);
console.log('This will create a task on the server, which will elicit input and create a task on the client.\n');
await callToolTask('collect-user-info-task', { infoType });
}
async function startNotifications(interval, count) {
console.log(`Starting notification stream: interval=${interval}ms, count=${count || 'unlimited'}`);
await callTool('start-notification-stream', { interval, count });
}
async function runNotificationsToolWithResumability(interval, count) {
if (!client) {
console.log('Not connected to server.');
return;
}
try {
console.log(`Starting notification stream with resumability: interval=${interval}ms, count=${count || 'unlimited'}`);
console.log(`Using resumption token: ${notificationsToolLastEventId || 'none'}`);
const request = {
method: 'tools/call',
params: {
name: 'start-notification-stream',
arguments: { interval, count }
}
};
const onLastEventIdUpdate = (event) => {
notificationsToolLastEventId = event;
console.log(`Updated resumption token: ${event}`);
};
const result = await client.request(request, types_js_1.CallToolResultSchema, {
resumptionToken: notificationsToolLastEventId,
onresumptiontoken: onLastEventIdUpdate
});
console.log('Tool result:');
result.content.forEach(item => {
if (item.type === 'text') {
console.log(` ${item.text}`);
}
else {
console.log(` ${item.type} content:`, item);
}
});
}
catch (error) {
console.log(`Error starting notification stream: ${error}`);
}
}
async function listPrompts() {
if (!client) {
console.log('Not connected to server.');
return;
}
try {
const promptsRequest = {
method: 'prompts/list',
params: {}
};
const promptsResult = await client.request(promptsRequest, types_js_1.ListPromptsResultSchema);
console.log('Available prompts:');
if (promptsResult.prompts.length === 0) {
console.log(' No prompts available');
}
else {
for (const prompt of promptsResult.prompts) {
console.log(` - id: ${prompt.name}, name: ${(0, metadataUtils_js_1.getDisplayName)(prompt)}, description: ${prompt.description}`);
}
}
}
catch (error) {
console.log(`Prompts not supported by this server (${error})`);
}
}
async function getPrompt(name, args) {
if (!client) {
console.log('Not connected to server.');
return;
}
try {
const promptRequest = {
method: 'prompts/get',
params: {
name,
arguments: args
}
};
const promptResult = await client.request(promptRequest, types_js_1.GetPromptResultSchema);
console.log('Prompt template:');
promptResult.messages.forEach((msg, index) => {
console.log(` [${index + 1}] ${msg.role}: ${msg.content.type === 'text' ? msg.content.text : JSON.stringify(msg.content)}`);
});
}
catch (error) {
console.log(`Error getting prompt ${name}: ${error}`);
}
}
async function listResources() {
if (!client) {
console.log('Not connected to server.');
return;
}
try {
const resourcesRequest = {
method: 'resources/list',
params: {}
};
const resourcesResult = await client.request(resourcesRequest, types_js_1.ListResourcesResultSchema);
console.log('Available resources:');
if (resourcesResult.resources.length === 0) {
console.log(' No resources available');
}
else {
for (const resource of resourcesResult.resources) {
console.log(` - id: ${resource.name}, name: ${(0, metadataUtils_js_1.getDisplayName)(resource)}, description: ${resource.uri}`);
}
}
}
catch (error) {
console.log(`Resources not supported by this server (${error})`);
}
}
async function readResource(uri) {
if (!client) {
console.log('Not connected to server.');
return;
}
try {
const request = {
method: 'resources/read',
params: { uri }
};
console.log(`Reading resource: ${uri}`);
const result = await client.request(request, types_js_1.ReadResourceResultSchema);
console.log('Resource contents:');
for (const content of result.contents) {
console.log(` URI: ${content.uri}`);
if (content.mimeType) {
console.log(` Type: ${content.mimeType}`);
}
if ('text' in content && typeof content.text === 'string') {
console.log(' Content:');
console.log(' ---');
console.log(content.text
.split('\n')
.map((line) => ' ' + line)
.join('\n'));
console.log(' ---');
}
else if ('blob' in content && typeof content.blob === 'string') {
console.log(` [Binary data: ${content.blob.length} bytes]`);
}
}
}
catch (error) {
console.log(`Error reading resource ${uri}: ${error}`);
}
}
async function callToolTask(name, args) {
if (!client) {
console.log('Not connected to server.');
return;
}
console.log(`Calling tool '${name}' with task-based execution...`);
console.log('Arguments:', args);
// Use task-based execution - call now, fetch later
// Using the experimental tasks API - WARNING: may change without notice
console.log('This will return immediately while processing continues in the background...');
try {
// Call the tool with task metadata using streaming API
const stream = client.experimental.tasks.callToolStream({
name,
arguments: args
}, types_js_1.CallToolResultSchema, {
task: {
ttl: 60000 // Keep results for 60 seconds
}
});
console.log('Waiting for task completion...');
let lastStatus = '';
for await (const message of stream) {
switch (message.type) {
case 'taskCreated':
console.log('Task created successfully with ID:', message.task.taskId);
break;
case 'taskStatus':
if (lastStatus !== message.task.status) {
console.log(` ${message.task.status}${message.task.statusMessage ? ` - ${message.task.statusMessage}` : ''}`);
}
lastStatus = message.task.status;
break;
case 'result':
console.log('Task completed!');
console.log('Tool result:');
message.result.content.forEach(item => {
if (item.type === 'text') {
console.log(` ${item.text}`);
}
});
break;
case 'error':
throw message.error;
}
}
}
catch (error) {
console.log(`Error with task-based execution: ${error}`);
}
}
async function cleanup() {
if (client && transport) {
try {
// First try to terminate the session gracefully
if (transport.sessionId) {
try {
console.log('Terminating session before exit...');
await transport.terminateSession();
console.log('Session terminated successfully');
}
catch (error) {
console.error('Error terminating session:', error);
}
}
// Then close the transport
await transport.close();
}
catch (error) {
console.error('Error closing transport:', error);
}
}
process.stdin.setRawMode(false);
readline.close();
console.log('\nGoodbye!');
process.exit(0);
}
// Set up raw mode for keyboard input to capture Escape key
process.stdin.setRawMode(true);
process.stdin.on('data', async (data) => {
// Check for Escape key (27)
if (data.length === 1 && data[0] === 27) {
console.log('\nESC key pressed. Disconnecting from server...');
// Abort current operation and disconnect from server
if (client && transport) {
await disconnect();
console.log('Disconnected. Press Enter to continue.');
}
else {
console.log('Not connected to server.');
}
// Re-display the prompt
process.stdout.write('> ');
}
});
// Handle Ctrl+C
process.on('SIGINT', async () => {
console.log('\nReceived SIGINT. Cleaning up...');
await cleanup();
});
// Start the interactive client
main().catch((error) => {
console.error('Error running MCP client:', error);
process.exit(1);
});
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/**
* Simple interactive task client demonstrating elicitation and sampling responses.
*
* This client connects to simpleTaskInteractive.ts server and demonstrates:
* - Handling elicitation requests (y/n confirmation)
* - Handling sampling requests (returns a hardcoded haiku)
* - Using task-based tool execution with streaming
*/
export {};
//# sourceMappingURL=simpleTaskInteractiveClient.d.ts.map

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"use strict";
/**
* Simple interactive task client demonstrating elicitation and sampling responses.
*
* This client connects to simpleTaskInteractive.ts server and demonstrates:
* - Handling elicitation requests (y/n confirmation)
* - Handling sampling requests (returns a hardcoded haiku)
* - Using task-based tool execution with streaming
*/
Object.defineProperty(exports, "__esModule", { value: true });
const index_js_1 = require("../../client/index.js");
const streamableHttp_js_1 = require("../../client/streamableHttp.js");
const node_readline_1 = require("node:readline");
const types_js_1 = require("../../types.js");
// Create readline interface for user input
const readline = (0, node_readline_1.createInterface)({
input: process.stdin,
output: process.stdout
});
function question(prompt) {
return new Promise(resolve => {
readline.question(prompt, answer => {
resolve(answer.trim());
});
});
}
function getTextContent(result) {
const textContent = result.content.find((c) => c.type === 'text');
return textContent?.text ?? '(no text)';
}
async function elicitationCallback(params) {
console.log(`\n[Elicitation] Server asks: ${params.message}`);
// Simple terminal prompt for y/n
const response = await question('Your response (y/n): ');
const confirmed = ['y', 'yes', 'true', '1'].includes(response.toLowerCase());
console.log(`[Elicitation] Responding with: confirm=${confirmed}`);
return { action: 'accept', content: { confirm: confirmed } };
}
async function samplingCallback(params) {
// Get the prompt from the first message
let prompt = 'unknown';
if (params.messages && params.messages.length > 0) {
const firstMessage = params.messages[0];
const content = firstMessage.content;
if (typeof content === 'object' && !Array.isArray(content) && content.type === 'text' && 'text' in content) {
prompt = content.text;
}
else if (Array.isArray(content)) {
const textPart = content.find(c => c.type === 'text' && 'text' in c);
if (textPart && 'text' in textPart) {
prompt = textPart.text;
}
}
}
console.log(`\n[Sampling] Server requests LLM completion for: ${prompt}`);
// Return a hardcoded haiku (in real use, call your LLM here)
const haiku = `Cherry blossoms fall
Softly on the quiet pond
Spring whispers goodbye`;
console.log('[Sampling] Responding with haiku');
return {
model: 'mock-haiku-model',
role: 'assistant',
content: { type: 'text', text: haiku }
};
}
async function run(url) {
console.log('Simple Task Interactive Client');
console.log('==============================');
console.log(`Connecting to ${url}...`);
// Create client with elicitation and sampling capabilities
const client = new index_js_1.Client({ name: 'simple-task-interactive-client', version: '1.0.0' }, {
capabilities: {
elicitation: { form: {} },
sampling: {}
}
});
// Set up elicitation request handler
client.setRequestHandler(types_js_1.ElicitRequestSchema, async (request) => {
if (request.params.mode && request.params.mode !== 'form') {
throw new types_js_1.McpError(types_js_1.ErrorCode.InvalidParams, `Unsupported elicitation mode: ${request.params.mode}`);
}
return elicitationCallback(request.params);
});
// Set up sampling request handler
client.setRequestHandler(types_js_1.CreateMessageRequestSchema, async (request) => {
return samplingCallback(request.params);
});
// Connect to server
const transport = new streamableHttp_js_1.StreamableHTTPClientTransport(new URL(url));
await client.connect(transport);
console.log('Connected!\n');
// List tools
const toolsResult = await client.listTools();
console.log(`Available tools: ${toolsResult.tools.map(t => t.name).join(', ')}`);
// Demo 1: Elicitation (confirm_delete)
console.log('\n--- Demo 1: Elicitation ---');
console.log('Calling confirm_delete tool...');
const confirmStream = client.experimental.tasks.callToolStream({ name: 'confirm_delete', arguments: { filename: 'important.txt' } }, types_js_1.CallToolResultSchema, { task: { ttl: 60000 } });
for await (const message of confirmStream) {
switch (message.type) {
case 'taskCreated':
console.log(`Task created: ${message.task.taskId}`);
break;
case 'taskStatus':
console.log(`Task status: ${message.task.status}`);
break;
case 'result':
console.log(`Result: ${getTextContent(message.result)}`);
break;
case 'error':
console.error(`Error: ${message.error}`);
break;
}
}
// Demo 2: Sampling (write_haiku)
console.log('\n--- Demo 2: Sampling ---');
console.log('Calling write_haiku tool...');
const haikuStream = client.experimental.tasks.callToolStream({ name: 'write_haiku', arguments: { topic: 'autumn leaves' } }, types_js_1.CallToolResultSchema, {
task: { ttl: 60000 }
});
for await (const message of haikuStream) {
switch (message.type) {
case 'taskCreated':
console.log(`Task created: ${message.task.taskId}`);
break;
case 'taskStatus':
console.log(`Task status: ${message.task.status}`);
break;
case 'result':
console.log(`Result:\n${getTextContent(message.result)}`);
break;
case 'error':
console.error(`Error: ${message.error}`);
break;
}
}
// Cleanup
console.log('\nDemo complete. Closing connection...');
await transport.close();
readline.close();
}
// Parse command line arguments
const args = process.argv.slice(2);
let url = 'http://localhost:8000/mcp';
for (let i = 0; i < args.length; i++) {
if (args[i] === '--url' && args[i + 1]) {
url = args[i + 1];
i++;
}
}
// Run the client
run(url).catch(error => {
console.error('Error running client:', error);
process.exit(1);
});
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export {};
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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
/**
* SSE Polling Example Client (SEP-1699)
*
* This example demonstrates client-side behavior during server-initiated
* SSE stream disconnection and automatic reconnection.
*
* Key features demonstrated:
* - Automatic reconnection when server closes SSE stream
* - Event replay via Last-Event-ID header
* - Resumption token tracking via onresumptiontoken callback
*
* Run with: npx tsx src/examples/client/ssePollingClient.ts
* Requires: ssePollingExample.ts server running on port 3001
*/
const index_js_1 = require("../../client/index.js");
const streamableHttp_js_1 = require("../../client/streamableHttp.js");
const types_js_1 = require("../../types.js");
const SERVER_URL = 'http://localhost:3001/mcp';
async function main() {
console.log('SSE Polling Example Client');
console.log('==========================');
console.log(`Connecting to ${SERVER_URL}...`);
console.log('');
// Create transport with reconnection options
const transport = new streamableHttp_js_1.StreamableHTTPClientTransport(new URL(SERVER_URL), {
// Use default reconnection options - SDK handles automatic reconnection
});
// Track the last event ID for debugging
let lastEventId;
// Set up transport error handler to observe disconnections
// Filter out expected errors from SSE reconnection
transport.onerror = error => {
// Skip abort errors during intentional close
if (error.message.includes('AbortError'))
return;
// Show SSE disconnect (expected when server closes stream)
if (error.message.includes('Unexpected end of JSON')) {
console.log('[Transport] SSE stream disconnected - client will auto-reconnect');
return;
}
console.log(`[Transport] Error: ${error.message}`);
};
// Set up transport close handler
transport.onclose = () => {
console.log('[Transport] Connection closed');
};
// Create and connect client
const client = new index_js_1.Client({
name: 'sse-polling-client',
version: '1.0.0'
});
// Set up notification handler to receive progress updates
client.setNotificationHandler(types_js_1.LoggingMessageNotificationSchema, notification => {
const data = notification.params.data;
console.log(`[Notification] ${data}`);
});
try {
await client.connect(transport);
console.log('[Client] Connected successfully');
console.log('');
// Call the long-task tool
console.log('[Client] Calling long-task tool...');
console.log('[Client] Server will disconnect mid-task to demonstrate polling');
console.log('');
const result = await client.request({
method: 'tools/call',
params: {
name: 'long-task',
arguments: {}
}
}, types_js_1.CallToolResultSchema, {
// Track resumption tokens for debugging
onresumptiontoken: token => {
lastEventId = token;
console.log(`[Event ID] ${token}`);
}
});
console.log('');
console.log('[Client] Tool completed!');
console.log(`[Result] ${JSON.stringify(result.content, null, 2)}`);
console.log('');
console.log(`[Debug] Final event ID: ${lastEventId}`);
}
catch (error) {
console.error('[Error]', error);
}
finally {
await transport.close();
console.log('[Client] Disconnected');
}
}
main().catch(console.error);
//# sourceMappingURL=ssePollingClient.js.map

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node_modules/@modelcontextprotocol/sdk/dist/cjs/examples/client/streamableHttpWithSseFallbackClient.d.ts generated vendored Normal file
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export {};
//# sourceMappingURL=streamableHttpWithSseFallbackClient.d.ts.map

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{"version":3,"file":"streamableHttpWithSseFallbackClient.d.ts","sourceRoot":"","sources":["../../../../src/examples/client/streamableHttpWithSseFallbackClient.ts"],"names":[],"mappings":""}

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node_modules/@modelcontextprotocol/sdk/dist/cjs/examples/client/streamableHttpWithSseFallbackClient.js generated vendored Normal file
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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const index_js_1 = require("../../client/index.js");
const streamableHttp_js_1 = require("../../client/streamableHttp.js");
const sse_js_1 = require("../../client/sse.js");
const types_js_1 = require("../../types.js");
/**
* Simplified Backwards Compatible MCP Client
*
* This client demonstrates backward compatibility with both:
* 1. Modern servers using Streamable HTTP transport (protocol version 2025-03-26)
* 2. Older servers using HTTP+SSE transport (protocol version 2024-11-05)
*
* Following the MCP specification for backwards compatibility:
* - Attempts to POST an initialize request to the server URL first (modern transport)
* - If that fails with 4xx status, falls back to GET request for SSE stream (older transport)
*/
// Command line args processing
const args = process.argv.slice(2);
const serverUrl = args[0] || 'http://localhost:3000/mcp';
async function main() {
console.log('MCP Backwards Compatible Client');
console.log('===============================');
console.log(`Connecting to server at: ${serverUrl}`);
let client;
let transport;
try {
// Try connecting with automatic transport detection
const connection = await connectWithBackwardsCompatibility(serverUrl);
client = connection.client;
transport = connection.transport;
// Set up notification handler
client.setNotificationHandler(types_js_1.LoggingMessageNotificationSchema, notification => {
console.log(`Notification: ${notification.params.level} - ${notification.params.data}`);
});
// DEMO WORKFLOW:
// 1. List available tools
console.log('\n=== Listing Available Tools ===');
await listTools(client);
// 2. Call the notification tool
console.log('\n=== Starting Notification Stream ===');
await startNotificationTool(client);
// 3. Wait for all notifications (5 seconds)
console.log('\n=== Waiting for all notifications ===');
await new Promise(resolve => setTimeout(resolve, 5000));
// 4. Disconnect
console.log('\n=== Disconnecting ===');
await transport.close();
console.log('Disconnected from MCP server');
}
catch (error) {
console.error('Error running client:', error);
process.exit(1);
}
}
/**
* Connect to an MCP server with backwards compatibility
* Following the spec for client backward compatibility
*/
async function connectWithBackwardsCompatibility(url) {
console.log('1. Trying Streamable HTTP transport first...');
// Step 1: Try Streamable HTTP transport first
const client = new index_js_1.Client({
name: 'backwards-compatible-client',
version: '1.0.0'
});
client.onerror = error => {
console.error('Client error:', error);
};
const baseUrl = new URL(url);
try {
// Create modern transport
const streamableTransport = new streamableHttp_js_1.StreamableHTTPClientTransport(baseUrl);
await client.connect(streamableTransport);
console.log('Successfully connected using modern Streamable HTTP transport.');
return {
client,
transport: streamableTransport,
transportType: 'streamable-http'
};
}
catch (error) {
// Step 2: If transport fails, try the older SSE transport
console.log(`StreamableHttp transport connection failed: ${error}`);
console.log('2. Falling back to deprecated HTTP+SSE transport...');
try {
// Create SSE transport pointing to /sse endpoint
const sseTransport = new sse_js_1.SSEClientTransport(baseUrl);
const sseClient = new index_js_1.Client({
name: 'backwards-compatible-client',
version: '1.0.0'
});
await sseClient.connect(sseTransport);
console.log('Successfully connected using deprecated HTTP+SSE transport.');
return {
client: sseClient,
transport: sseTransport,
transportType: 'sse'
};
}
catch (sseError) {
console.error(`Failed to connect with either transport method:\n1. Streamable HTTP error: ${error}\n2. SSE error: ${sseError}`);
throw new Error('Could not connect to server with any available transport');
}
}
}
/**
* List available tools on the server
*/
async function listTools(client) {
try {
const toolsRequest = {
method: 'tools/list',
params: {}
};
const toolsResult = await client.request(toolsRequest, types_js_1.ListToolsResultSchema);
console.log('Available tools:');
if (toolsResult.tools.length === 0) {
console.log(' No tools available');
}
else {
for (const tool of toolsResult.tools) {
console.log(` - ${tool.name}: ${tool.description}`);
}
}
}
catch (error) {
console.log(`Tools not supported by this server: ${error}`);
}
}
/**
* Start a notification stream by calling the notification tool
*/
async function startNotificationTool(client) {
try {
// Call the notification tool using reasonable defaults
const request = {
method: 'tools/call',
params: {
name: 'start-notification-stream',
arguments: {
interval: 1000, // 1 second between notifications
count: 5 // Send 5 notifications
}
}
};
console.log('Calling notification tool...');
const result = await client.request(request, types_js_1.CallToolResultSchema);
console.log('Tool result:');
result.content.forEach(item => {
if (item.type === 'text') {
console.log(` ${item.text}`);
}
else {
console.log(` ${item.type} content:`, item);
}
});
}
catch (error) {
console.log(`Error calling notification tool: ${error}`);
}
}
// Start the client
main().catch((error) => {
console.error('Error running MCP client:', error);
process.exit(1);
});
//# sourceMappingURL=streamableHttpWithSseFallbackClient.js.map

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