| name | validate-code |
| description | Validate code quality: auto-fix formatting/lint, verify types, run tests. Use when user asks to "validate code", "/validate-code", "check code", or wants to validate before committing. Don't use for committing, pushing, or writing new tests. |
Validate Code
Run the project's own quality gates — format/lint fix, type check, tests — whatever this project defines. Detect the toolchain; never assume npm.
Workflow
- Detect the project's commands. Prefer a task the project already defines over a raw tool call:
- Node →
package.json scripts (lint:fix/lint-fix, lint, typecheck/tsc, test)
- Python →
pyproject.toml / tox.ini / Makefile (ruff --fix/black, ruff/flake8, mypy, pytest)
- Go →
gofmt -w, go vet, go build ./..., go test ./...
- Rust →
cargo fmt, cargo clippy, cargo check, cargo test
- else → read the
Makefile / CI config for the equivalent targets
- Format + lint fix (the fix variant). These rewrite files in place and exit 0 silently — capture what changed right after (
git status --short / git diff --stat) and remember it for the report. The user is about to commit; they need to know their tree was modified.
- Lint + types (check variants).
- Tests.
- Report: an Auto-fixed section listing files the fix step changed (or "nothing auto-fixed"), then overall PASS or FAIL with
file:line error references.
Rules
- Detect the project's commands — never hardcode a package manager
- Always auto-fix before reporting errors — but never modify files silently; always report which files auto-fix changed
- Run fix → check → test sequentially
- If the fix step fails, still run check + tests; report all failures at the end
- Report errors as
file:line references
- Never commit, stage, or push anything
Error Handling
- If no recognizable manifest/tasks → ask the user for the validate command, or report and stop
- If a step's command doesn't exist → skip it, note it was skipped
- If all steps missing → report nothing to run, stop
- If tests time out → report and suggest raising the runner's timeout
- If a runner crashes (exit code other than 0 or 1) → report crash output and stop
