# Context7
> Up-to-date library documentation for coding assistants. Resolve any library name and get version-specific docs instantly — powered by Upstash.

## Website
https://context7.com

## Portal
https://context7.on.xpay.sh

## MCP Servers

### Context7
Library documentation lookup for coding assistance (by Upstash)
URL: https://context7.mcp.xpay.sh/mcp?key=YOUR_XPAY_KEY
Tools:
- 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-docs' 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.

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. ($0.01/call)
- query-docs: Retrieves and queries up-to-date documentation and code examples from Context7 for any programming library or framework.

You must call 'resolve-library-id' 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. ($0.01/call)

## Get Started
1. Get an API key at https://context7.on.xpay.sh/account/keys
2. Add the MCP server URL to your client config (Claude, Cursor, Windsurf)
3. Pay per tool call from your XPay wallet

## About
Powered by XPay — pay-per-use API access for AI agents.
https://xpay.sh