Castforge

Castforge

Castforge is a desktop workspace that runs a configurable team of AI coding agents (Lead, Coders, Tester, Reviewer, Designer, etc.) to plan, build, test, and review software projects locally while you steer the work.

Castforge is ai agents software teams evaluate for software & gaming. Use this page to review pricing, integration signals, and the best alternatives before you commit.

Pricing not listed
#522 in AI Agents (522 tools)
Just launched
Data reviewed Sep 10, 2026

Profile facts come from the vendor source. AiMatch labels unknown pricing or API details instead of estimating them.

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Quick Overview

Best for: Software & Gaming

What it does

AI Agents software for decision-makers comparing workflow fit and alternatives.

Best fit

Software & Gaming

Pricing snapshot

Pricing available from Free during early access

Next step

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Castforge

Castforge is a desktop workspace that runs multiple AI coding agents in distinct roles (Lead, Coders, Tester, Reviewer, Designer, etc.) to automate planning, implementation, testing, and review of software projects while keeping the human user in control. It is aimed at developers and teams who want a guided, review-first multi-agent workflow, live previews, and local project control. The product is distributed as a downloadable Windows app (v0.6.7-beta) with macOS and Linux builds coming soon, and is free during early access.

Castforge runs Claude Code, Codex, Gemini and GitHub Copilot as one reviewed AI dev team on a live board you steer. Free during early access. Windows.

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Key Features

Multi-agent teams

Run configurable teams of agents in real roles (Lead, Coders, Tester, Reviewer, Designer, Researcher). Assign roles to agents and pick the model per seat; presets (Solo, Pair, Trio) speed onboarding.

Bring-your-own-AI / Sign-ins

Sign in with GitHub Copilot for a free start, connect Claude, ChatGPT/OpenAI, Google Gemini, or paste your own API key. Connect subscriptions you already pay for; requests go from your machine to your provider.

Live preview & Time Machine

See your app render live with desktop, tablet, and phone frames. Time Machine lets you scrub through snapshots and pick up from prior points.

Course/Phase board (project board)

A Lead drafts a phase board for each project; cards move as the team works, dependencies are enforced, and you can group phases into milestones and reorder the backlog.

Adaptive intent routing

Messages are analyzed for intent and handled at the appropriate depth — quick fixes run immediately, larger requests trigger full plans and the whole team; chat announces depth with a one-click override.

Project memory & append-only ledger

A living summary of every project (stack, what's built, key decisions, invariants, current focus). Every agent reads this before touching work. History is stored in an append-only ledger and can be exported to a decisions.md file.

Quality and review gates

Built-in quality tiers decide which review gates run (plan-check before code, goal-backward verification against acceptance criteria). Three tiers from Draft to Max, with skipped gates reported explicitly.

Self-healing runs

Detects when a step did not actually produce the expected output, names the issue, attempts a repair once, and reports the result rather than silently accepting or hiding failures.

Backend scaffolding

Prebuilt guided setups for common backend pieces: Auth (sign-in, sessions), Database (schema, migrations), Payments, Email, File storage, Scheduled jobs, and a test harness.

Isolated seats and permission modes

Each agent seat runs in an isolated home; read-only seats are enforced per seat (they do not receive connected servers). Permission modes include Careful, Balanced, and Autonomous.

Parallel branches and merge gates

Run multiple agents in parallel, each on its own branch/worktree, then merge with a review gate and enforcement of dependencies.

Integrations

Wire in GitHub, Vercel, and Supabase from setup so agents can use them during runs.

Pricing

Free Tier Available

Castforge is free while in early access. You bring your own AI; each provider bills you directly for model usage.

Early access (free)

Free during early access
  • Download and use Castforge free during early access
  • Bring your own AI sign-ins or API keys; providers bill you directly
  • Access to multi-agent workflows, project boards, live preview, and backend scaffolding

Use Cases

Accelerate web app development

Let an AI team plan, scaffold the backend, implement features, run tests, and prepare publish drafts so developers can iterate faster with guided scaffolding for auth, DB, payments, email, storage, and scheduled jobs.

Automated code review and QA

Use Reviewer and Tester roles plus quality tiers and verification gates to catch weak plans and verify delivered work against acceptance criteria automatically.

Orchestrate multiple AI providers

Combine sign-ins and API keys from providers you already pay for (Copilot, Claude, OpenAI, Gemini, Cursor, local models) to run the best agent for each role without per-token billing from Castforge.

Maintain project continuity and audits

Keep a decision ledger and project memory so context survives restarts, new agents, or crashes; export decisions.md to commit alongside code.

Live-preview driven UI development

Watch the app render live for desktop, tablet, and phone while a Designer role reviews the UI against a design spec.

Integrations

GitHub

Connect GitHub for repository access and workflows.

Vercel

Wire in Vercel as a publishing/deployment target (publish to web coming soon).

Supabase

Connect Supabase as a backend/data service from setup.

AI providers (sign-ins and API keys)

Sign in with GitHub Copilot, Claude, ChatGPT/OpenAI, Google Gemini, Cursor, or paste API keys; local models supported.

Benefits

Bring your existing AI subscriptions or API keys — Castforge does not bill or mark up model usage.
A review-first team workflow that plans, tests, and verifies work to reduce silent failures and unverified 'Done' states.
Local-first operation: project files remain on your filesystem and requests go from your machine to your chosen provider.
Faster setup for common backend pieces (auth, DB, payments, email, file storage, scheduled jobs).
Live preview and Time Machine enable immediate visual feedback and time travel through app snapshots.
Free while in early access, enabling trial without immediate cost from Castforge itself.

Limitations

Currently Windows-only v0.6.7-beta; macOS and Linux builds are coming soon and are not yet available.
Publishing to web, mobile app stores, and desktop targets is on the roadmap and not fully live yet.
Team/org shared setups and org controls for larger human teams are planned but not yet available (waitlist).

Frequently Asked Questions

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. Providers bill you directly and Castforge never marks it up.
Does my code leave my machine?
No. Your project files stay on your filesystem. Castforge stores only your account, anonymous usage stats, and crash diagnostics.
What does Castforge cost?
Castforge is free during early access. You bring your own AI, so each provider bills you directly for model usage. Paid plans may be added later with clear notice.
Which agents work?
Connect up to 17 AI coding agents. Five sign in with existing accounts: GitHub Copilot (free), Claude, OpenAI Codex, Google Gemini, and Cursor. Local models need no account; add API keys for others.
Is there a macOS or Linux version?
Windows is the v1 target. macOS and Linux builds are in active development and coming soon.
Can my team use it together?
Castforge runs a full AI dev team on every project and this is free during early access. Shared setups and org controls for larger human teams may arrive with a later plan.

Getting Started

  1. 1 Step 1: Download the Windows build (v0.6.7-beta) and sign in — the fastest start is a free GitHub Copilot sign-in.
  2. 2 Step 2: Open an existing project or start fresh; the Lead will suggest a team and draft a plan for you to review before anything runs.
  3. 3 Step 3: Approve the single offered action to begin runs, then watch the board, preview the app live, and steer or approve work as it proceeds.

Support

Discord

Public Discord for feedback and beta discussion; the founder reads it.

Docs

Product documentation available from the site (Docs link).

Changelog

Changelog on the site for release notes and beta updates.

Contact

Contact page linked from the site for inquiries.

API

Available: No

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