[Vishal Habib (vishalhabib99)]

Describe your changes

Since #2750 (Oct 26), mcp/uv.lock pins mcp 2.3.0. mcp 2.x removed mcp.server.fastmcp, so the install in mcp/README.md (uv sync, then uv run ... python -m olive_mcp) now fails on import:

ModuleNotFoundError: No module named 'mcp.server.fastmcp'. This is mcp 2.x, where FastMCP was renamed to MCPServer (from mcp.server.mcpserver import MCPServer) ...

This PR moves server.py to the 2.x name: from mcp.server.mcpserver import MCPServer and MCPServer(name=..., instructions=...). @mcp.tool(), @mcp.prompt(name=..., description=...) and mcp.run() keep the same API, so tools.py and __init__.py are unchanged. mcp/pyproject.toml now requires mcp[cli]>=2.0 (MCPServer does not exist in 1.x, so an environment that already had mcp 1.x would keep it and fail at import). uv.lock changes only its matching requires-dist line; locked versions from #2750 are unchanged and uv lock --check passes.

Checked (mcp 2.3.0, the locked version)

	server.py import	tools/list	prompt returning list[dict]	tool call
main	ModuleNotFoundError	-	-	-
this branch	OK	OK	OK	OK

Checked with a standalone server built the same way as server.py (same constructor arguments, a tool and an @mcp.prompt(name=, description=) returning list[dict]), driven through the mcp 2.3.0 in-memory Client.

Checklist before requesting a review

• Add unit tests for this change. (The mcp/ package has no tests directory.)
• Make sure all tests can pass.
• Update documents if necessary. (No doc change needed.)
• Lint and apply fixes to your code by running lintrunner -a
• Is this a user-facing change? If yes, give a description of this change to be included in the release notes. Olive MCP server starts again after uv sync (mcp 2.x).

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[Copilot]

🟡 Changes recommended

The new import requires MCP 2.x, but the unconstrained dependency can retain MCP 1.x and cause server startup to fail with ModuleNotFoundError.

1 open issue

• Declare the minimum compatible MCP SDK version · New

What changed in this PR

Updates Olive’s MCP server to use the MCP 2.x API, addressing the startup import failure introduced by the MCP 2.3.0 lockfile update in #2750.

Changes:

• Replaces the FastMCP import and constructor with MCPServer.
• Leaves tool registration, prompts, the entry point, and the lockfile unchanged.

File	Description
mcp/​src/​olive_mcp/​server.py	Uses MCPServer to initialize the server with the MCP 2.x API.

_{Review effort: Balanced}

[Vishal Habib (vishalhabib99)]

Good catch from the Copilot review: mcp/pyproject.toml now requires mcp[cli]>=2.0 (173bf5a), since mcp.server.mcpserver only exists in 2.x (checked: imports on 2.0.0, ModuleNotFoundError on 1.30.0). uv.lock changes only its requires-dist line, and uv lock --check passes. I updated the description to match.