Castforge

Connect up to 17 AI coding agents, five with a free or subscription sign-in.

Connect the AI you already have and the services your app runs on, all from one screen. Sign in with a subscription, paste an API key, or start free with a GitHub Copilot sign-in. No per-token bills, and everything stays on your machine.

Sign in with Claude, ChatGPT, or Google, or add your own API key. One is plenty to start.

Wire in GitHub, Vercel, and Supabase as tools your agents can use, explained in plain language.

Run two or more live at once to put a full team on the board.

Every seat runs in its own isolated home, so a role you set to read-only is read-only on every agent, not just on some of them. A read-only seat is not handed your connected servers.

Castforge runs each project as a real team. A Lead breaks the work into a plan. Coders build it. A Tester and a Reviewer check it. A Designer guards the look. You assign which agent fills each role, and pick the model per seat.

Presets to start fast. Solo, Pair, Trio, or build a custom team.

Roles hand off to each other and run a review loop until the work holds up.

Run several agents in parallel, each on its own branch, then merge with a review gate.

A Designer role reviews the UI against a design spec, not just the code.