> ## Documentation Index
> Fetch the complete documentation index at: https://getoverlay.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Build on Overlay

> Ways to connect your own tools, apps and agents to Overlay.

Overlay exposes a workspace to other software in a few ways. Start with MCP unless you need something it does not cover.

> **[MCP](https://getoverlay.io/docs/developer/mcp.md)**
>
> Give ChatGPT, Claude, Cursor or any MCP client access to notes, files, memory and agents.

> **[REST API](https://getoverlay.io/docs/developer/api/overview.md)**
>
> The `/api/v1` routes behind the web app: conversations, files, automations and more.

> **[Bring your own agent](https://getoverlay.io/docs/help/other-agents.md)**
>
> Run Claude Code, Codex or another agent on your machine and assign it work in Overlay.

> **[Webhooks](https://getoverlay.io/docs/developer/webhooks.md)**
>
> Get a signed request at your endpoint when a chat or automation finishes.

Want to change Overlay itself? [Run it locally](https://getoverlay.io/docs/developer/contribute/run-locally.md) and read the [repository map](https://getoverlay.io/docs/developer/contribute/repository-map.md).

Found a security problem? See [Reporting a vulnerability](https://getoverlay.io/docs/developer/security.md).


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.