Do I need an API key to use Context7?

Yes, Context7 requires an API key from Context7.com, which must be configured in your MCP settings using the 'claude mcp add' command.

How do I find the correct ID for a library?

The skill includes a 'resolve-library-id' tool that allows you to search by a common library name to find the exact identifier required for fetching documentation.

Can I request documentation for a specific version of a library?

Yes, you can specify exact version strings (e.g., /vercel/next.js/v15.0.0) during the fetch process to ensure the documentation matches your project's specific dependencies.

How does Context7 differ from Claude's internal knowledge?

Context7 fetches live, version-specific documentation from the web, whereas Claude's internal knowledge is limited to its training data cutoff, which may be outdated for fast-moving libraries.

Context7 Library Documentation

Name: Context7 Library Documentation
Author: lefant

bylefant

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学習とドキュメンテーション

Fetches up-to-date, version-specific library documentation and API references directly through the Context7 MCP server.

概要

Context7 is a specialized skill for Claude Code that bridges the gap between static training data and the rapidly evolving ecosystem of software libraries. It allows developers to retrieve real-time documentation, current API patterns, and version-specific code examples for virtually any public library. By integrating directly with the Context7 MCP server, this skill ensures that implementations follow the latest best practices, helps resolve complex integration errors, and prevents the use of deprecated patterns, making it an essential tool for framework-heavy development and modern software engineering.

主な機能

Topic-based documentation fetching for specific use cases
Detailed code examples and official implementation patterns
Real-time library ID resolution and discovery
Enhanced error resolution through targeted documentation search
Version-specific API reference retrieval
1 GitHub stars

ユースケース

Verifying API signatures and patterns to avoid using deprecated library features
Implementing features with the latest framework versions like Next.js or FastAPI
Debugging complex library-specific errors using current troubleshooting guides

概要

主な機能

Topic-based documentation fetching for specific use cases
Detailed code examples and official implementation patterns
Real-time library ID resolution and discovery
Enhanced error resolution through targeted documentation search
Version-specific API reference retrieval
1 GitHub stars

ユースケース

Verifying API signatures and patterns to avoid using deprecated library features
Implementing features with the latest framework versions like Next.js or FastAPI
Debugging complex library-specific errors using current troubleshooting guides