Stdio MCP server that proxies tools from an upstream SonarQube MCP server
over streamable HTTP. Tools are forwarded 1:1 with full schema preservation
(inputSchema, outputSchema, annotations, title, _meta); CallToolResult is
forwarded including isError and structuredContent.
- proxy.py: persistent upstream ClientSession, low-level Server with
@list_tools and @call_tool(validate_input=False) handlers — the upstream
is the sole schema authority.
- cli.py: Click-based 'serve' (stdio) and 'check' (probe) commands;
logging strictly on stderr (stdout reserved for JSON-RPC).
- Targets mcp 1.27.x decorator API (pinned <2 to guard against the
unreleased constructor-API rewrite on main).
- pytest suite (14 tests) covering env-var resolution, schema passthrough,
CallToolResult forwarding, registration, dispatch end-to-end, and CLI
success/error paths.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
marcus
a6fd188c14