Add Context7 as a Codex plugin

In one line

Add Context7 as a Codex plugin
Look up library docs and use them as the basis for your code.

The big picture

Adding a Codex CLI plugin and checking in a new chat — Click the picture to see it larger.

Follow along

What the star count does (and doesn’t) tell you

When checked on November 10, 2026, Context7’s official GitHub showed about 64.4k stars. That shows interest, not install counts or search rankings. It’s a plugin for looking up docs, and even after connecting you still need to check the library version and the original docs.

Install it through Codex CLI’s plugin path

1. Check whether your Codex CLI supports it

In your terminal, run codex –version and codex plugin –help. If the commands aren’t there, start with the current official install and update guide. This page doesn’t run any commands for you.

2. Add the official repository as a marketplace

Run the two commands below in order. The plugin and its dependencies are installed into your real setup. Check the official source and currently supported commands before going ahead.

3. Finish signing in through the browser and start a new chat

Follow the OAuth sign-in in the official install guide. Tell apart “installed but not signed in” from “the docs tool actually works.”

4. Test it with a specific library and version

Send the prompt below to check that it really uses the Context7 tool and shows its sources. Never put your OpenAI API key into Context7’s sign-in.

Commands and prompts you can copy

Official plugin install commands

codex plugin marketplace add upstash/context7 codex plugin add context7@context7-marketplace

Check the docs tool actually works

Use Context7 to look up [the API I'm curious about] in [library name and version]. Show which docs and version you looked at, plus a short example. If you couldn't actually call the Context7 tool, tell me. Don't change any of my project files yet.

Where people get stuck

Lots of people get stuck here. Find the one that matches your situation!

If you’re using the API key method

Manual setup is officially offered too, but this guide focuses on the OAuth plugin path. For the key method, use a separate key from the Context7 dashboard and the current docs for your client. Check the provider’s terms for usage limits and pricing.

Answer: “No, each service has its own sign-in and keys”
Every service has its own way of authenticating. Don’t mix keys from different providers.

Official sources

Next tip

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