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context7 — Agent Skill

by anthropics · Updated

Upstash Context7 MCP server for up-to-date documentation lookup. Connects to Context7's hosted remote MCP server (https://mcp.context7.com/mcp) — no local Node.js or npx required — to pull version-specific documentation and code examples directly from source repositories into your LLM context. Works anonymously out of…

At a glance

context7 is an Agent Skill by anthropics in the Documents & Office category. In Claude Code it installs with `/plugin install context7@claude-plugins-official` after adding the anthropics/claude-plugins-official marketplace; other assistants use its SKILL.md instructions as rules. Its source repository has 45,210 GitHub stars (as of Oct 28, 2026).

Source 45kGitHub stars

How to install context7 in your AI client

Setup for Claude Code, Claude Desktop, Cursor, Codex, Windsurf, Cline and VS Code — copy-paste ready.

How to install context7 in Claude CodeAnthropic's agentic CLI

  1. Add the marketplace

    claude
    /plugin marketplace add anthropics/claude-plugins-official

  2. Install the skill

    claude
    /plugin install context7@claude-plugins-official

  3. Use it

    These are slash commands for a Claude Code session, not your shell. Claude auto-invokes the skill when your request matches its description — or type its slash command if it exposes one.

Documentation

Full README

Context7

Context7 solves a common problem with AI coding assistants: outdated training data and hallucinated APIs. Instead of relying on stale knowledge, Context7 fetches current documentation and code examples directly from source repositories.

This plugin connects Claude Code to Context7's hosted remote MCP server (https://mcp.context7.com/mcp) — no local Node.js, npm, or npx required.

Available Tools

  • `resolve-library-id` — searches for libraries and returns Context7-compatible identifiers (e.g. /vercel/next.js) plus available versions.
  • `query-docs` — fetches documentation for a specific library, ranked by relevance to your question.

API Key (optional)

Without an API key the plugin connects anonymously and shares the anonymous rate limits. To use your own plan, create an API key in the Context7 dashboard and export it as an environment variable before launching Claude Code:

bash
# e.g. in ~/.zshrc or ~/.bashrc
export CONTEXT7_API_KEY="your-api-key"

The plugin's MCP server configuration picks up CONTEXT7_API_KEY automatically. Restart Claude Code after setting it, then verify usage in the dashboard.

Usage

The plugin works automatically when you ask about libraries:

  • "How do I set up authentication in Next.js 15?"
  • "Show me React Server Components examples"
  • "What's the Prisma syntax for relations?"

To get documentation for a specific version, include the version in the library ID (e.g. /vercel/next.js/v15.1.8). The resolve-library-id tool returns available versions, so you can pick the one that matches your project.

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