CodexClaude
API Contract Diff
Compare API shapes and flag breaking changes.
Difficulty
Advanced
Risk
Medium
Helps with
Compare OpenAPI
Find removed field
Review status codes
Use cases
API migrations
Client updates
Release review
Inside
SKILL.mdIncluded
ScriptsIncluded
ReferencesIncluded
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APIcontractsbreaking changes
Checks
Scripts
Check before using
Review commands before execution.
Run on a branch or disposable workspace first.
Check file changes and external calls before shipping.
Source
Curated pack
SourceSimilar skills
🧑💻API Integration
Wire external APIs with typed clients and clear error paths.
🎭API Mock Studio
Build useful fake APIs for frontend and demos.
🧩Backend Routes
Small, reliable API endpoints with validation and tests.
🧬TypeScript Strictness
Raise type safety without a noisy rewrite.
🪝Webhook Handler
Build reliable webhook handlers with verification and retries.
🧯Error Handling Pass
Make failure paths explicit, useful, and testable.