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by upstash • Documentation & Docs
An MCP server that injects up-to-date, version-specific library documentation and code examples into LLM contexts to prevent hallucinated or outdated code.
Access and inject up-to-date, version-specific library documentation and code examples into prompts to avoid hallucinated APIs.
Resolve ambiguous library names into canonical Context7 IDs and then fetch focused documentation topics (e.g., routing, hooks).
Seamless integration with MCP-capable clients (Cursor, Claude Code, VS Code, etc.) to automatically provide docs during code generation or troubleshooting.
Context7 MCP fetches live, version-specific documentation and code examples from source projects and exposes them via the Model Context Protocol so LLM agents can use accurate, current docs in prompts. It provides tools to resolve library names to Context7-compatible IDs and to retrieve focused documentation topics or token-limited responses. The server integrates with many MCP clients (Cursor, Claude Code, VS Code, and more) and supports local or remote deployment. An optional Context7 API key unlocks higher rate limits and private repository access.
Resolves a package/product name to a Context7-compatible library ID and returns matching libraries. You MUST call this function before 'Query Documentation' tool to obtain a valid Context7-compatible library ID UNLESS the user explicitly provides a library ID in the format '/org/project' or '/org/project/version' in their query. Each result includes: - Library ID: Context7-compatible identifier (format: /org/project) - Name: Library or package name - Description: Short summary - Code Snippets: Number of available code examples - Source Reputation: Authority indicator (High, Medium, Low, or Unknown) - Benchmark Score: Quality indicator (100 is the highest score) - Versions: List of versions if available. Use one of those versions if the user provides a version in their query. The format of the version is /org/project/version. For best results, select libraries based on name match, source reputation, snippet coverage, benchmark score, and relevance to your use case. Selection Process: 1. Analyze the query to understand what library/package the user is looking for 2. Return the most relevant match based on: - Name similarity to the query (exact matches prioritized) - Description relevance to the query's intent - Documentation coverage (prioritize libraries with higher Code Snippet counts) - Source reputation (consider libraries with High or Medium reputation more authoritative) - Benchmark Score: Quality indicator (100 is the highest score) Response Format: - Return the selected library ID in a clearly marked section - Provide a brief explanation for why this library was chosen - If multiple good matches exist, acknowledge this but proceed with the most relevant one - If no good matches exist, clearly state this and suggest query refinements For ambiguous queries, request clarification before proceeding with a best-guess match. IMPORTANT: Do not call this tool more than 3 times per question. If you cannot find what you need after 3 calls, use the best result you have.
Retrieves and queries up-to-date documentation and code examples from Context7 for any programming library or framework. You must call 'Resolve Context7 Library ID' tool first to obtain the exact Context7-compatible library ID required to use this tool, UNLESS the user explicitly provides a library ID in the format '/org/project' or '/org/project/version' in their query. IMPORTANT: Do not call this tool more than 3 times per question. If you cannot find what you need after 3 calls, use the best information you have.
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