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Stop advertising MCP_* env vars for MCPServer settings; drop pydantic-settings (#3170)

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Max 2026-07-25 23:22:27 +01:00 • committed by GitHub
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@ -34,7 +34,6 @@ You don't need to know any of this to use the SDK, but if you're wondering what
* `mcp-types`: every protocol type (requests, results, content blocks) as its own package, versioned in lockstep with the SDK. Every `from mcp_types import ...` in these docs is this package.
* [`anyio`](https://anyio.readthedocs.io/): the async runtime. The whole SDK is written against anyio, so it runs on either `asyncio` or `trio`.
* [`pydantic`](https://docs.pydantic.dev/): what every `mcp_types` model is built on, plus all schema generation and validation.
* [`pydantic-settings`](https://docs.pydantic.dev/latest/concepts/pydantic_settings/): server configuration via `MCP_*` environment variables and `.env` files.
* [`httpx2`](https://pypi.org/project/httpx2/): the HTTP client behind the Streamable HTTP and SSE *client* transports, with server-sent events support built in.
* [`starlette`](https://www.starlette.io/), [`uvicorn`](https://www.uvicorn.org/), [`sse-starlette`](https://pypi.org/project/sse-starlette/), and [`python-multipart`](https://pypi.org/project/python-multipart/): the HTTP *server* transports.
* [`jsonschema`](https://pypi.org/project/jsonschema/): validates a tool's structured output against its declared output schema.