mcp 2.0 removed the low-level decorator API the server was built on and
changed several models. _build_server now defines the four handlers as
plain coroutines and binds them at the end in a version-aware way: the
@server.list_tools()/... decorators on 1.x, the on_list_tools=/...
constructor callbacks (with explicit ListToolsResult/CallToolResult/
ListResourcesResult/ReadResourceResult wrapping) on 2.x. Model diffs
handled: Tool.inputSchema is input_schema on 2.x (constructor aliases
work on both, attribute access does not); Resource.uri is a plain str
on 2.x and rejects AnyUrl instances, so resource URIs are passed as
strings (1.x coerces them). The 2.x server also reports graphifyy's own
version in serverInfo. Extras relaxed from mcp>=1,<2 to mcp>=1,<3.
Verified: full stdio handshake (initialize / tools/list / tools/call /
resources/list / resources/read) and the tests in test_serve.py +
test_serve_http.py (145 passed) under BOTH mcp 1.29.0 and mcp 2.0.0.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
