What tools does the context7 MCP server provide?

context7 exposes 2 tools: query-docs, resolve-library-id. This list was returned by the running server when we connected to it.

Does context7 require an API key?

No. context7 answered a tools/list request without credentials.

How do I install context7?

Run: claude mcp add --transport http context7 https://mcp.context7.com/mcp. One-click install links for Cursor and VS Code are also available on the server's page.

Connection check verified live · 26h ago

context7

Up-to-date code docs for any prompt

Databases & SQL Web search & scraping AI & LLM tooling

Install

Remote (HTTP)

claude mcp add --transport http context7 https://mcp.context7.com/mcp

Tools 2

GitHub stars 61,625

Installs / wk 879.5k

Licence MIT

Transport streamable-http, stdio

Last checked 26h ago

Tools & capabilities

2 tools

Read from the running server on 26h ago.

query-docs read-only query*libraryId*

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…

resolve-library-id read-only query*libraryName*

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… 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.

Context cost

Light

Connecting this server adds 2 tool definitions to every request — roughly 180 tokens before you ask anything.

Adds little to your context. Safe to keep connected.

Estimated at ~90 tokens per tool. Actual size varies with schema complexity — treat this as an order of magnitude, not a measurement.

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Ranked by shared tools where both expose an inventory, otherwise by shared wording.

Source & links

Repository: upstash/context7
npm: @upstash/context7-mcp
Registry: io.github.upstash/context7
Endpoint: https://mcp.context7.com/mcp
Sources: registry + github + npm