v0.4.0

Changed

• Ported to the mcp 2.x server API. 2.0.0 renamed mcp.server.fastmcp to mcp.server.mcpserver and the FastMCP class to MCPServer, with no compatibility alias. The tool contract is unchanged: every tool keeps its name, description, and input and output schemas.
• Every dependency is pinned to an exact version instead of a lower bound: mcp 2.0.0 and anyio 4.14.2, and for development pytest 9.1.1, pytest-asyncio 1.4.0 and ruff 0.16.1.

Fixed

• A fresh install no longer breaks on import. The mcp spec was >=1.6.0 with no upper bound, so once 2.0.0 was published the resolver picked it and the server failed to start.

Packaging

• The build toolchain is pinned alongside the dependencies: setuptools to an exact version, the python:3.13-slim base image by digest, and every GitHub Action to a full commit SHA rather than a moving major tag. A floating tag can change what a build produces with nobody deciding, which is the same failure the dependency pins address.