MCP Python SDK 2.2.0 · origin redirects, 30 min idle, OAuth issuer — from issue No. 026nofeed.dev
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Issue No. 026 · 8 September 2026
Breaking

MCP Python SDK 2.2.0 · origin redirects, 30 min idle, OAuth issuer

Origin-only redirect following; 30-minute idle session expiry on legacy Streamable HTTP; 10k session cap; OAuth issuer match on the legacy path. Docs: py.sdk.modelcontextprotocol.io. Twin defaults on 1.30.0.12

MATTERS TO · Anyone hosting or calling MCP over HTTP with the official Python SDK
WHAT THE VERDICT MEANS
Will break existing code: deprecation or API change.
Sources for this entry01 github — modelcontextprotocol/python-sdk v2.2.0 (2026-09-08) · 02 github — modelcontextprotocol/python-sdk v1.30.0 (2026-09-08) · 03 github — pydantic/pydantic-ai v2.41.0 (2026-09-08) · 04 npm — @anthropic-ai/claude-code dist-tags (2026-09-08) · 05 Keyword X digest 7 Sep (2026-09-08) · 06 Reddit digest 7 Sep (2026-09-08) · 07 Cursor status — Grok Bot unreachable (major 1.1h) (2026-09-08)

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