Repository Issue Activity (beta)

#961 chore: server package imports net/http/httptest in production files

#956 bug: stdio client deadlocks when the server writes to stderr (StderrPipe is never read)

#959 SSE transport panics on duplicate "endpoint" event (and on concurrent Close while messages arrive)

#967 bug: SSE transport Start succeeds after Close with no live connection

#948 spec: support the 2026-07-28 specification

#943 feature: let a session refuse resources/subscribe for a URI it publishes no updates for

#944 bug: final SSE response in handlePost is never flushed, causing streamable-http clients to hang

#949 bug: draft-07 'definitions' round-trip renames to $defs without rewriting $refs, producing dangling references

#932 bug: feature(server): deliver request-scoped elicitation on the originating POST SSE stream

#942 bug:

#934 EmbeddedResource in CallToolResult always fails to unmarshal (Resource interface field is not dispatched to concrete types)

#817 streamable_http: client-returned JSON-RPC errors for elicitation/create reported as "sampling error"

#922 bug: StreamableHTTPServer.Shutdown() doesn't terminate active connections and hangs

#918 bug: struct-based schema tags produce incorrect schema output

#935 Data race on Client.initialized between Initialize and concurrent requests

#774 Clarvia AEO scoring integration for Go MCP servers

#928 feat(server): support SEP-2575 stateless MCP (server/discover + Mcp-Method/Mcp-Name headers)

#897 Task goroutine context is canceled when HTTP response is flushed (executeRegularToolAsTask)

#914 bug: formatLeafMessage uses %s for ErrorKind, producing unreadable output

#913 bug: integers above 2^53 corrupt in tool arguments and structuredContent (float64 decode, no raw access)

#917 bug: Outdated struct tags in examples/structured_input_and_output/README.md cause runtime panic

#896 feature: built-in per-session RateLimit middleware

#905 Server-populated request.Header is silently sent by client transports, leaking inbound headers in proxy setups

#907 Performance regression in v0.55.0: tool filters re-run over the full tool set on every tools/call (O(N)+ per call, OOM with many tools)

#903 bug: unchecked nil in OAuth causing mcp-go to panic