Castforge · Your AI dev team, working as one.

Connections

Bring the subscriptions you already pay for.

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.

The Castforge Connections screen: Claude, Codex, and Gemini connected via subscription, with GitHub, Vercel, Supabase, Cloudflare, and Stripe available as dev infrastructure.

Multi-agent teams

Give every job to the agent best at it.

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.

The Castforge model strategy control, with Max, Smart, and Economy tiers. — Set a model strategy per task, from Max quality to Economy.

The Castforge team roster: Lead, Researcher, Coder, Reviewer, Designer, and Tester, each labeled with the model powering it.

Live preview

See your app as you build it.

Watch your app render live as the team works. Frame it for desktop, tablet, or phone. Step back through changes with Time Machine and pick up from any point.

Live preview with desktop, tablet, and phone frames.
Time Machine: scrub back through snapshots of your app.
Permission modes: Careful, Balanced, or Autonomous. You decide how much rope.

Castforge live preview with the Time Machine drawer showing keyframe snapshots you can step back through.

Course board

Plan the work. Watch it ship.

The Lead drafts a phase board for each project. Cards move as the team works, and dependencies are enforced, so nothing starts before the work it needs is done.

Lead agent drafts plans automatically for each project.
The Lead drafts the plan; cards move as the team works.
Dependencies are enforced so nothing ships out of order.
New: group your phases into milestones, reorder the backlog, and run them in sequence. The run pauses at each milestone boundary so you can review before rolling on.

The Castforge Course board: phases laid out as columns with task cards tagged by role, one card marked as doing.

Project memory

It remembers why, not just what.

Castforge keeps a living summary of every project: the stack, what's built and wired, the key decisions and invariants, and the current focus. Every fresh agent reads it before touching the work, so context survives a new card, a crash, or a restart with no lost ground.

A shared project state the whole team starts from, editable any time to correct what the agents remember.
Backed by an append-only ledger you can filter by decisions, criteria, gate outcomes, or transitions. Nothing is ever overwritten.
Export to a decisions.md file in your project, so the history commits and reviews alongside your code.

The Castforge Project Memory tab showing the Project State summary: Stack, Built and Wired, Key Decisions and Invariants, Current Focus, Seeded Creds, and Open Questions, with filter tabs for decisions, criteria, gate outcomes, and transitions.

Quality and review gates

A quality bar built into the team.

Pick how much checking each project gets with a quality tier, and the tier decides which review gates run: the Lead's plan-check before any code is written, and a goal-backward verification of the finished work against its acceptance criteria.

Three tiers, from a fast Draft run to a Max run with research and testing on top of the full gate stack.
The plan-check gate catches a weak plan early; the verification gate checks the result against the goal.
When a tier turns a gate off, Castforge says so. A skipped gate is never shown as a silent pass.

The Castforge quality tier control: Draft (light), Standard (balanced), and Max (full). Draft is code only, Standard adds plan-check and verification, and Max adds research and testing.

✓

Plan-check gate

before any code is written

✓

Goal-backward verification

delivered work vs. the acceptance criteria

Backend pieces

Drop in the parts that are a pain to wire up.

Auth, a database, payments, email, file storage, scheduled jobs, tests. Each one is a short guided setup instead of an afternoon of boilerplate.

Auth

Sign-in, sessions, and protected routes, set up for you.

Database

A schema, migrations, and queries wired to your app.

Payments

Checkout and billing flows scaffolded, ready to test.

Email

Transactional sends and templates, hooked up.

File storage

Uploads and downloads with a storage backend.

Scheduled jobs

Cron-style tasks that run on their own.

Tests

A test harness the Tester role can run and extend.

Integrations

GitHub, Vercel, and Supabase, connected from setup.

Publish

Ship your web app to the web.

Castforge drafts code signing, custom domains, screenshots, and store-listing drafts, you review, then publish your web app. Web publishing is coming soon, with mobile and desktop targets to follow.

SoonWeb SooniOS SoonAndroid SoonDesktop

deploy

Publish to web→

coming soon: your own Vercel URL + custom domain

How it works

Three steps to a working team.

STEP 01

Connect your AI.

Sign in free with GitHub Copilot, bring a subscription you already pay for (Claude Pro, ChatGPT Plus), or add your own API key. Castforge launches each agent's own secure login, so we never see your password. Requests go from your machine straight to your chosen provider.

STEP 02

Pick a starting point.

Open an existing project or start fresh. The Lead suggests a team and drafts a plan you can adjust before anything runs.

STEP 03

Steer it to done.

Watch the board, preview live, approve or redirect. You are always in control, at any point in the work.

How it compares

Built for a team, not a single agent.

Castforge is a reviewed team of agents from every major provider, running in parallel in one Windows app, on the subscriptions you already pay for.

Capability	CastforgeWindows workspace	First-party agent appsClaude Code, Codex, Gemini CLI	AI coding IDEsCursor, Copilot, Windsurf, Devin	Open-source orchestratorsOpenCode, Conductor, Aider
Every major coding agent in one app	Claude, Codex, Gemini, Copilot, and more	Its own models only	One or two, its way	Varies by tool
A reviewed team that plans, builds, tests, and checks each other	Built in, a reviewer on every card	You assemble it	Not offered	Parallel, you review
Parallel agents on isolated branches	Parallel lanes, each in its own worktree	Some now fan out	Recently added	Varies
Remembers your project across restarts	Written to disk, reloadable	Session-bound	Session-bound	Per run
Step back to any earlier point	Snapshots that survive resets		Session checkpoints
Live preview of the app as it builds	In app, feeds the Designer		Partial
Uses the AI accounts you already pay for	Your sign-ins or your keys	Its own subscription	Billed by the tool	Your keys
Native Windows desktop app	First-class	Yes	Yes	Some are Mac-first
Guided for developers who avoid the terminal	Board, roles, one click	Improving	Editor-first	Power-user tools
Provision and deploy your own backend	In preview, with a safety gate	Not built in	Not built in	Not built in

Comparison reflects each category's typical product as of July 2026. Castforge parallel lanes and publish are rolling out across beta builds.

On the roadmap · Coming soon

Where Castforge is going.

These are not live yet. Here is what we are building next.

Coming soon

Publish to the web.

Ship your project straight from the board. A deploy pipeline runs behind a review gate before anything goes live.

Coming soon

Team plan.

Shared setups and org controls for larger teams. Join the waitlist to hear first.

Coming soon

Beyond Windows.

macOS and Linux builds, and a mobile companion to answer your team's approval prompts from your phone.

Pricing

Free during early access.

Castforge is free while it is in early access. Connect the AI you already have, a free GitHub Copilot sign-in, a subscription you already pay for, or your own API key, and just start coding. Each provider bills you directly for model usage, and Castforge never marks it up. We may add paid plans later; if we do, we will say so clearly first.

Download for Windows→ See what's included

What you pay: Castforge itself is free during early access. Because you bring your own AI, you pay each provider (Anthropic, OpenAI, Google, or GitHub) directly for model usage at their price. Castforge never includes model credits and never marks them up.

FAQ

Questions, answered plainly.

Do I need an API key?

No. The fastest start is a free GitHub Copilot sign-in. You can also bring a Claude Pro or ChatGPT Plus subscription, or add your own API key. Whatever you choose, the provider bills you directly and Castforge never marks it up.

Does my code leave my machine?

No. Your project files stay on your filesystem. We store only your account, anonymous usage stats, and crash diagnostics.

What does Castforge cost?

Castforge is free during early access. There is nothing to buy right now. You bring your own AI, so each provider bills you directly for model usage. We may add paid plans later, and we will say so clearly before anything changes.

Which agents work?

Connect up to 17 AI coding agents. Five have a one-click path today: GitHub Copilot (free), Claude, OpenAI Codex, Google Gemini, and local models. Bring your own API key for the rest.

Is there a macOS or Linux version?

Windows is the v1 target. macOS and Linux are in active development.

Can my team use it together?

Castforge runs a full AI dev team on every project, Lead, Coder, Tester, Reviewer, Researcher, and Designer, and that is free during early access. Shared setups and org controls for larger human teams may arrive with a later plan. Download it and sign in to get started.

Free during early access

Your AI dev team is one sign-in away.

Download Castforge and sign in free with GitHub Copilot, then watch a real team plan, build, test, and review on a live board, or bring a subscription or your own key.

Download for Windows→ See what's included

Windows 11+ · macOS & Linux coming soon · v0.3.0-beta.1