Who contributed to FastAPI & Pydantic on July 31, 2026?

1 developer shipped this update, including Viicos.

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Jul 31, 2026

$ the-wire · showcase

PYDANTIC ADDS MCP AND FASTMCP TO THIRD PARTY TEST SUITE

By RepoJournal · Filed 07:00 UTC on July 31, 2026 · About FastAPI & Pydantic · Composed from the cited sources · methodology

1 person shipped this

Viicos @Viicos 1 cited

Pydantic now validates compatibility with the MCP Python SDK and FastMCP frameworks, closing a critical integration testing gap.

Pydantic merged a change to add MCP Python SDK and FastMCP third party tests [1], addressing the request to expand its validation coverage beyond core use cases. The addition closes issue #12435 and gives the team visibility into whether changes break these popular ecosystem packages before they ship. This is the kind of integration testing that catches silent failures in production dependency chains. However, the change surfaces a failing test in langchain [1], which the contributor has already flagged for resolution. Watch that langchain issue closely if you're running both Pydantic and LangChain in the same service.

Action items

→ Monitor langchain#39157 for resolution before upgrading Pydantic pydantic/pydantic [monitor]

References

[1] Add MCP Python SDK and FastMCP third party tests ↗ pydantic/pydantic

$ ls fastapi/reviews/ # the step-back reads

the week in review Pydantic ships TypeForm support and MISSING stabilization the month in review Pydantic hardens core, FastAPI revamps docs

Topics: Python Full archive → Weekly reviews →

Quick answers

What shipped in FastAPI & Pydantic on July 31, 2026?: Pydantic now validates compatibility with the MCP Python SDK and FastMCP frameworks, closing a critical integration testing gap. In total, 1 commits and 1 pull requests landed.
Who contributed to FastAPI & Pydantic on July 31, 2026?: 1 developer shipped this update, including Viicos.
What were the notable FastAPI & Pydantic updates?: Add MCP Python SDK and FastMCP third party tests.

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$ log FastAPI & Pydantic --recent

2026-09-19 FastAPI & Pydantic: no material update 1 shipped 2026-09-18 Two new pydantic core schemas, counter and ordered-dict 8 shipped 2026-09-17 Pydantic docs examples stop passing silently, debug Python target lands in CI 6 shipped 2026-09-16 Pydantic documents how coordinated vulnerability response works for enterprise customers 2 shipped

$ log --all # elsewhere on the wire

@openclaw 2026-09-20 Cold-start Gateway diagnostics stop crying wolf, doctor repairs plugin drift Agentic Coding 2026-09-20 Cline desktop bundles shrink, goose unblocks its own clicks

$ ls showcases/

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