trace-mcp — Pre-Commit & Pre-PR Checks
Before creating a commit or opening a pull request, run the trace-mcp validation suite. Fix any critical or high findings before committing.
When to Use
- The user asks to commit, stage, or push changes
- The user asks to open a PR
- The agent has finished implementing a feature or fix and is about to hand off
Checklist
1. Security scan
scan_security({ rules: ["all"] })OWASP Top-10 vulnerability scan across the changed scope. If the change touches untrusted data flows, add:
taint_analysis({})Trace untrusted sources to sensitive sinks (SQL, shell, file system, HTTP).
2. Quality gates on the changed scope
check_quality_gates({ scope: "changed" })Validates complexity, coverage, duplication, and any project-configured gates on only the files you changed.
3. Antipattern scan
detect_antipatterns({})Flags N+1 queries, eager loading, inefficient iteration, and language-specific performance footguns.
4. Symbol-level diff for the PR description
compare_branches({ branch: "current" })Produces a symbol-level diff (functions added/removed/modified, signatures changed, exports changed). Use this as the basis for an accurate PR description instead of a raw line diff.
5. Bug prediction (optional, for risky changes)
predict_bugs({})
get_risk_hotspots({})Flags files where the combination of high complexity and high churn makes regressions likely. If your change touches a hotspot, add extra tests.
Fix or Escalate
- Critical / High findings: fix before committing. Do not suppress without discussion.
- Medium findings: fix if cheap, otherwise note in the PR description.
- Low / Info findings: note in the PR description.
After Commit
If the commit is part of a larger series, consider:
get_changed_symbols({ since: "<base-ref>" })to generate an accurate changelog entry grounded in the symbol graph rather than commit messages.