MCP Servers
Context7
Fetch current library documentation and code examples directly into Claude Code or Codex.
What it does
Adds library lookup and documentation retrieval through a hosted MCP server, with optional companion skills.
- Library identification
- Version-aware documentation lookup
- Current code examples
Why use it
Useful when implementing against a library version whose APIs may differ from the assistant’s training data.
Recent traction
Reported in 268 additional public repositories’ agent configs over 30 days.
Source snapshot: 2026-10-25. This is a 30-day signal, not a 90-day ranking.
View popularity source (opens in a new tab)Installation
Claude Code: run inside Claude Code: /plugin marketplace add upstash/context7 /plugin install context7@context7-marketplace
Restart Claude Code, run /mcp, select Context7, and complete browser sign-in.
Codex: run in your terminal: codex plugin marketplace add upstash/context7 codex plugin add context7@context7-marketplace
Complete OAuth sign-in and start a fresh Codex thread. The official client guide also documents manual MCP/API-key installation.
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