api-contract-checker
Validate API changes against an expected contract. Use when a mid-level developer needs to detect breaking changes.
npx skills add majiayu000/claude-skill-registry --skill api-contract-checker --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# API Contract Checker ## Purpose Validate API changes against an expected contract. ## Inputs to request - Old and new API specs or examples. - Versioning policy and client expectations. - Known consumers and usage patterns. ## Workflow 1. Compare endpoints, request/response fields, and status codes. 2. Identify breaking changes and backward-compatible adjustments. 3. Suggest versioning or migration notes. ## Output - Breaking change report with mitigation steps. ## Quality bar - Flag any removal or behavior change clearly. - Recommend safe rollouts for clients.
- Purpose
- Inputs to request
- Workflow
- Output
- Quality bar
What does the api-contract-checker skill do?
Validate API changes against an expected contract. Use when a mid-level developer needs to detect breaking changes.
How do I install it?
Run `npx skills add majiayu000/claude-skill-registry --skill api-contract-checker --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From majiayu000/claude-skill-registry, a repository with 534 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.