# Context7 (library + framework documentation)

Context7 fetches current documentation for libraries, frameworks, SDKs, APIs, and CLI tools.

- Use Context7 even for libraries you "know" — your training data may be stale on recent releases or breaking changes.
- Typical pattern: call `resolve-library-id` to find the library, then `query-docs` to fetch what you need.
- Include version information in your query when behavior is version-specific.
- Prefer Context7 over Argos when the question is "how does this library work." Argos is the fallback when Context7 doesn't have the doc.
- Do not use Context7 for refactoring, writing from scratch, business-logic debugging, or general programming concepts — it documents libraries, it doesn't theorize.