Search results

Rejected streamable-HTTP requests leave live sessions behind: the session is registered before the request is validated

Status: Open.

#3228 In modelcontextprotocol/python-sdk;

· sainikhiljuluri opened on Jul 30, 2026

NotRequired TypedDict return annotation raises PydanticForbiddenQualifier at tool registration on Python 3.10

Status: Open.

#3227 In modelcontextprotocol/python-sdk;

· sainikhiljuluri opened on Jul 30, 2026

Client-side support for the tasks extension (io.modelcontextprotocol/tasks, SEP-2663)

Status: Open.

#3226 In modelcontextprotocol/python-sdk;

· TheRoboMaster123 opened on Jul 30, 2026

structuredContent for a TypedDict return injects nulls for NotRequired keys, violating the tool's own outputSchema

Status: Open.

#3224 In modelcontextprotocol/python-sdk;

· sainikhiljuluri opened on Jul 30, 2026

[v2] Boolean progress total is delivered to callbacks as 1.0

Status: Open.

#3217 In modelcontextprotocol/python-sdk;

· chavalasantosh opened on Jul 29, 2026

URI templates does not work with Inspector v2

Status: Open.

#3216 In modelcontextprotocol/python-sdk;

· Muhammad-SF opened on Jul 29, 2026

Bug: OAuth provider holds context.lock for the whole request, so the standalone GET SSE stream stalls the first tools/call by ~15s

Status: Open.

#3209 In modelcontextprotocol/python-sdk;

· stayclosetothequestion opened on Jul 29, 2026

[v2] JSON-RPC error responses leave client OpenTelemetry spans UNSET

Status: Open.

#3174 In modelcontextprotocol/python-sdk;

· HarperZ9 opened on Jul 26, 2026

MCPServer: expose public get_tool(name) method

Status: Open.

#3162 In modelcontextprotocol/python-sdk;

· and-win opened on Jul 24, 2026

Fix Streamable HTTP Accept header quality-factor handling

Status: Open.

#3154 In modelcontextprotocol/python-sdk;

· dchou1618 opened on Jul 23, 2026

[v1.x] Backport #1912 and cut a release: a non-UTF-8 POST body on Streamable HTTP gets HTTP 500 INTERNAL_ERROR plus an ERROR cascade instead of the HTTP 400 PARSE_ERROR; the parse broadening ships only on main and the 2.0.0 pre-releases

Status: Open.

#3150 In modelcontextprotocol/python-sdk;

· alex-feel opened on Jul 23, 2026

Deeply-nested-body test fails on macOS: rejected as INVALID_REQUEST (-32600) instead of PARSE_ERROR (-32700)

Status: Open.

#3146 In modelcontextprotocol/python-sdk;

· maxisbey opened on Jul 22, 2026