Use this skill when you need deep understanding of external codebases.
Best-use cases:
- Explain how a third-party library works internally.
- Find real implementation patterns in public code.
- Compare two libraries/frameworks for a specific capability.
- Trace architecture and execution flow across a repository.
Tool routing:
- Official docs/API questions: use documentation lookup first.
- Real-world code usage patterns: search public repositories.
- Internal implementation details: fetch source and read targeted files.
Execution pattern:
- Identify target library/repo and scope the question.
- Collect high-signal files (README, package metadata, entry points).
- Inspect implementation files for the asked behavior.
- Synthesize findings with concrete file evidence.
Output style:
- Give direct answer first.
- Support with precise file references.
- Use a diagram if system flow is non-trivial.