# check-impl-against-spec

> Claude/Codex skill by [@warpdotdev](https://omgskills.com/library/warpdotdev/index.md) · 482 stars · Updated 2026-08-30

Compare a pull request's implementation against spec context in spec\_context.md and feed any material mismatches into review.json. Use during PR review when approved or repository spec context is available.

## Install

```sh
git clone https://github.com/warpdotdev/common-skills /tmp/common-skills && ln -s /tmp/common-skills/.agents/skills/check-impl-against-spec ~/.claude/skills/check-impl-against-spec
```

## From README

Check implementation against spec Use this skill only when speccontext.md exists during PR review. Goal Determine whether the implementation in the checked-out PR materially matches the approved spec context. This is a supplement to the normal code review, not a separate output. Inputs speccontext.md contains the spec context to compare against. It may include both product spec content (intended behavior, acceptance criteria) and tech spec content (implementation details, file changes). prdiff.txt contains the annotated diff for the PR. prdescription.md may contain additional scope or rationale. The working tree contains the PR branch contents.

## Links

- HTML page: https://omgskills.com/skills/warpdotdev/common-skills/check-impl-against-spec/
- GitHub: https://github.com/warpdotdev/common-skills
- Author: [@warpdotdev](https://omgskills.com/library/warpdotdev/index.md)

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