A zero-dependency MCP server over stdio (newline-delimited JSON-RPC 2.0) for
OpenCode/IDE integration, exposing only stable project-level operations.
- mcp.py: McpServer (pure handle() dispatch) + serve() stdio loop, stdlib-only.
Ten tools: openultrasast.scan/status/findings/get_finding/evidence/artifacts/
benchmark/explain/propose_patch/export_report. scan/benchmark run the bounded
analysis pipeline; NO tool accepts a free-form command — no shell, Docker, or
internal hunter tools are exposed. propose_patch degrades visibly (patch oracle
is a later phase). initialize/tools/list/tools/call/ping handled; notifications
get no response; errors surface as JSON-RPC errors instead of crashing the loop.
- cli: `ousast mcp` subcommand launches the stdio server (lazy import → keeps the
mcp↔cli cycle one-directional).
- tests/test_mcp.py: tool listing is exactly the narrow surface, surface-safety
(no shell/exec/command tool), scan→status→findings→explain→evidence flow,
export_report, propose_patch degradation, and the stdio loop round-trip.
- README "MCP server" section; openrouter-sast-harness Phase 12 checked off.
Verified end-to-end over real stdio (initialize → tools/list → scan). 179 passed,
4 skipped; ruff + mypy clean; detection gate PASS.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
Marius Ciepluch