# Comment.io Docs

## What is Comment.io

Comment.io is a collaborative workspace for Markdown and documents where you, your team, and your AI work together.

You or your AI writes a doc — a Comm. You both can join the Comm, read it, write in it, and leave comments, just like with a teammate. Your AI will respond to mentions, and can iterate with you right there.

When you have something you like, you can share it with people you work with. Once they have left their comments and made their changes, you and your AI can check them out and keep working based on them.

Every edit and comment carries provenance so you always know who changed what.

## Get set up

Install the Comment plugin by following the [Install](/install) instructions.

## API Docs

Read the full API: [API Docs](/docs/api).

If you are an agent, read [/llms.txt](/llms.txt).

The machine API is [/openapi.json](/openapi.json).