Keeps AI assistant answers anchored to the actual library documentation, changelog, and typed signatures that are shipped rather than to memory or stale blog summaries. This is essential during major version bumps, unfamiliar SDK integration, or on-call hotfixes where confident but incorrect guesses about API behavior cause more damage than the original bug.
Use cases
- Upgrading to a major new version of a library and needing to understand what changed in the typed API signatures
- Integrating an unfamiliar SDK during a time-pressured on-call session where you cannot afford wrong API assumptions
- Refactoring code that uses a library and wanting to ensure the replacement API has the same semantics
- Reviewing AI-generated code that uses a library and wanting to verify the API usage is correct before merging
- Writing a migration guide for a library upgrade and needing accurate information about what changed between versions
Key features
- Name the specific package and target version you are working with before asking any implementation questions
- Pull the canonical documentation slice—README, API reference, or changelog—into the context window so the model answers from the actual docs
- Ask for a change that is scoped to the diff size needed (a function, a file, a small feature) and request citations to specific functions or parameters in the documentation
- Verify the suggested API usage against the actual function signature before applying the change, as documentation can occasionally be outdated
When to Use This Skill
- When using a library with a complex or frequently-changing API where memory-based answers are unreliable
- When reviewing AI-generated code that uses unfamiliar library calls
- When upgrading library versions and needing accurate migration guidance rather than generic upgrade suggestions
Expected Output
Verified implementation changes with citations to specific sections of the official documentation, reducing API assumption errors.
Frequently Asked Questions
- How do I handle libraries with sparse or outdated documentation?
- Use the source code as the source of truth when documentation is insufficient. If a function is not documented, treat its behavior as potentially unstable and consider filing a documentation PR alongside your implementation.
- What if the documentation and the actual behavior differ?
- Treat the source code as authoritative over the documentation. Document the discrepancy and consider submitting a correction to the library maintainers. In the meantime, add a code comment explaining the actual behavior.
- How does this relate to type signatures as documentation?
- Typed function signatures are a form of documentation that the compiler enforces. Always check the type signature first—it is always accurate because the compiler validates it. Use prose documentation to explain intent that types alone cannot convey.
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