modelcontextprotocol/typescript-sdk

# MCP SDK ResourceTemplate URI Validation Issue: RFC 6570 Template Matching Behavior 6 days ago

bug ready for work P2 help wanted fix proposed

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Undici instrumentation marks successful MCP requests as aborted due to premature AbortController.abort() in SSE / StreamableHTTP transports 16 days ago

enhancement P2 help wanted

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Support Secure Hashed Client Secrets in OAuthRegisteredClientsStore 22 days ago

enhancement P3 auth v2 help wanted needs decision

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Can we have a chatbot example that connected to multiple remote servers about 1 month ago

documentation enhancement good first issue P3

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Call schema on inputSchema validation failure about 1 month ago

enhancement P3 v2 help wanted needs decision

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Question: Tool list changed notification about 1 month ago

documentation good first issue question P3 potentially close

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Add ways for server processes to self-terminate when host is gone 3 months ago

enhancement P3 help wanted needs decision

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

update server examples to cover external authentication servers 3 months ago

documentation enhancement good first issue P3 auth

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Client sees "Task <id> failed" instead of the real error/result on failed tasks 3 months ago

bug good first issue ready for work P2 fix proposed

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Bug Report-2: Missing Periodic Ping Implementation 3 months ago

enhancement P2 v2 help wanted needs decision

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

[TRACKING] non compliance with SEP-986 / tool name validation 3 months ago

question P2 improves spec compliance needs maintainer help wanted

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Need an example to implement dynamic client registration against an existing oauth server 4 months ago

enhancement good first issue P3 auth

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

[TypeScript] Zod's .toJSONSchema() output type incompatible with elicitInput's requestedSchema parameter 4 months ago

bug good first issue P2

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Some transport errors are silently swallowed due to missing `onerror` callback usage 4 months ago

bug good first issue P2

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Need to override json limit defaults for express body parser in createMcpExpressApp() 4 months ago

enhancement good first issue P3

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Client class should throw a custom exception if the capability is unsupported 5 months ago

enhancement good first issue P3

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

typing structuredContent indirectly causes type error 7 months ago

enhancement help wanted

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

error TS2420: Class 'StreamableHTTPServerTransport' incorrectly implements interface 'Transport'. 7 months ago

bug P3 help wanted

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Bug: `server.tool()` silently ignores ZodObject schemas and strips all arguments 7 months ago

bug ready for work P2 help wanted

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Avoid trying SSE connection in `StreamableHTTPClientTransport` 7 months ago

bug good first issue ready for work P3

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Streamable HTTP examples use incorrect status code for invalid session IDs 7 months ago

bug good first issue P2

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

InvalidParams error when all fields in the tool schema are optional 7 months ago

bug good first issue P2

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

StreamableHTTPClientTransport is not implementing Transport properly 7 months ago

bug good first issue P3 v2

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Where to search actually WORKING example of using Remote MCP server aka "Connector" for Claude? 7 months ago

documentation enhancement P2 v2 help wanted

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Support `roots/list` request from server to client 7 months ago

documentation enhancement good first issue P3

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Allow customizable reconnection behavior for non-persistent clients 7 months ago

enhancement good first issue ready for work P1 v2

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Prefer token endpoint auth method obtained during OAuth client registration 8 months ago

bug good first issue ready for work P2 auth

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

token_endpoint_auth_methods_supported should also support `none` 8 months ago

bug good first issue P2

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Client#listPrompts results in MCP error -32601: Method not found 8 months ago

bug good first issue ready for work P3

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Cannot destructure property 'requestInfo' of 'undefined' as it is undefined. 8 months ago

bug good first issue ready for work P3

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

OAuth token exchange fails with URL-encoded responses - assumes JSON format only 8 months ago

bug good first issue P2

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

onerror and other listener not remove after client close (stdio) 8 months ago

bug good first issue ready for work P3

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

pnpm fails to build 8 months ago

bug good first issue ready for work P2

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Invalid JSON RPC requests do not respond with an error 8 months ago

bug good first issue ready for work P2 improves spec compliance

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Subclassing McpServer causes tool invocation issues 8 months ago

bug good first issue

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

SDK Crashes on Hot Reload Due to Invalid JSON in Stdio Stream 9 months ago

bug good first issue ready for work P1

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

SSE client is not adding headers from requestInit? in _commonHeaders method 9 months ago

bug good first issue ready for work P2

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Double Nesting in Tool Call Response Format 9 months ago

bug good first issue pr welcome

modelcontextprotocol/typescript-sdk

12.8K

The official TypeScript SDK for Model Context Protocol servers and clients

TypeScript

Open Issues Need Help