pi-context7

A pi extension that brings Context7 library documentation into your coding sessions.

Instead of relying on potentially stale training data, the LLM can pull real, up-to-date documentation snippets directly from a library's official docs at query time.

How it works

The extension registers two tools that the LLM can call:

Tool	Purpose
resolve_library_id	Search context7.com for a library by name; returns ranked matches with IDs, trust scores, and token counts
get_library_docs	Fetch documentation snippets for a resolved library ID, optionally focused on a topic

Typical flow:

1. You ask about a library (e.g. "how do I use Drizzle ORM with Postgres?")
2. LLM calls resolve_library_id("drizzle-orm") → picks the best match
3. LLM calls get_library_docs("/drizzle-team/drizzle-orm", { topic: "postgres" }) → gets real docs
4. LLM answers using current, accurate documentation

Installation

Via npm (recommended)

# Global — available in all projects
pi install npm:@aaronmaturen/pi-context7

# Project-local — saved to .pi/settings.json, shared with your team
pi install -l npm:@aaronmaturen/pi-context7

Then restart pi or run /reload.

From source

# Clone and symlink globally
git clone https://github.com/aaronmaturen/pi-context7
ln -s $(pwd)/pi-context7 ~/.pi/agent/extensions/pi-context7

# Or for a quick one-off test without installing
pi -e ./src/index.ts

Usage

Just ask pi about any library — the LLM will use the tools automatically when it needs current docs:

you: how do I do server-side rendering with Next.js 15 App Router?
you: show me the zustand persist middleware API
you: what's the correct way to use Drizzle transactions?

Or be explicit:

you: use context7 to look up the latest Hono docs on routing

Configuration

No API key required — Context7 has a generous free tier (200 requests/day for anonymous use). The extension sets a X-User-Agent: pi-context7/1.0 header so usage is identifiable.

If you have a Context7 account and want to use a higher quota, the API currently uses session cookies (browser-based auth). Anonymous access is sufficient for typical development use.

Tuning token budgets

The default tokens value is 10,000. For complex topics or large APIs you can ask for more:

you: fetch 25000 tokens of the React Server Components docs from context7

The LLM will pass the appropriate tokens value to get_library_docs.

No npm dependencies

The extension uses only Node.js built-ins (fetch) and pi's own utilities. No npm install required.

Files

pi-context7/
├── README.md
├── package.json        # pi extension entry point declaration
└── src/
    └── index.ts        # Extension — two tools + session status indicator

Context7 API

• GET https://context7.com/api/v1/search?query=<name> — search libraries
• GET https://context7.com/api/v1/<library-id>?tokens=<n>&topic=<t> — fetch docs

See context7.com and the Context7 MCP server for more details.