Context7 MCP server
Up-to-date library docs, on demand.
Context7 pulls version-specific, up-to-date documentation and code examples for thousands of libraries straight into the agent's context — so it stops hallucinating APIs from stale training data.
Who it’s for: Developers tired of agents inventing outdated or non-existent APIs.
Local MCP server — runs on your machine via the command below.
The real tool surface, each labeled by risk. Full trust breakdown on the server page · safety review: Is Context7 MCP safe?.
| Tool | Risk |
|---|---|
| query-docs 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.
Do not call this tool more than 3 times per question. | read |
| resolve-library-id 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. | read |
What is Context7 MCP?
Context7 pulls version-specific, up-to-date documentation and code examples for thousands of libraries straight into the agent's context — so it stops hallucinating APIs from stale training data.
Who is Context7 for?
Developers tired of agents inventing outdated or non-existent APIs.
What tools does Context7 expose?
Context7 exposes 2 verified tools, including query-docs, resolve-library-id. Each is labeled by read / write / destructive risk on this page.
How do I connect Context7 to my agent?
Context7 runs locally over stdio. Add it to your MCP client config: claude mcp add context7 -- npx -y @upstash/context7-mcp.
How much does Context7 cost?
Free.
Is Context7 verified on MCPExplorer?
Yes — Context7 is hand-checked and featured on MCPExplorer. We pull its real tool surface, required scopes, and risk labels from the live index so you can see exactly what it does before connecting.
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