Altar Bridge.
Altar Bridge is an After Effects MCP. Connect Claude, ChatGPT, Codex or any MCP app to your comps.
Choose your app
- Claude DesktopOne click from Altar Chat
- Claude CodeOne click, or paste one prompt
- ChatGPT and CodexChatGPT desktop app or Codex. Not chatgpt.com
- Any MCP appCursor, VS Code, Windsurf, Zed and more
What you need
- After Effects with Altar installed and open
- The AI app you already use, on the same Mac
- About two minutes
You don’t need an API key. Your AI app does the thinking, on the plan you already pay for.
How it works
Your AI app sees what is in your project and asks Altar Bridge to make changes. Altar Bridge carries them out in After Effects and reports back exactly what changed.
Altar Bridge runs on your Mac. What it reads for your AI app, such as layer names, text or a frame capture, goes to that app, which handles it under its own privacy terms.
What you can ask
Use Altar to describe my active composition and suggest one improvement. Do not change anything yet.
Bring the title layer in over 12 frames with a soft overshoot.
Change every font in this composition to Inter Bold, including precomps.
More to try, grouped by job, on Prompts to try.