What platforms does BuilderStudio support?

BuilderStudio is available on MacOS, iOS, Linux, Windows and Web App.

What are the limitations of BuilderStudio?

Requires an OpenRouter key and account before the agent can do anything useful. Container image builds and Hermes setup add friction compared with a single-install editor plugin. No published pricing information on the homepage, so commercial terms are unclear.

BuilderStudio

Name: BuilderStudio
Author: BuilderStudio

Agentic coding IDE for macOS, iOS, and the terminal

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Screenshot of BuilderStudio, Agentic coding IDE for macOS, iOS, and the terminal

What is BuilderStudio?

BuilderStudio is an AI project builder tool. BuilderStudio from WunderCorp combines a native macOS IDE, the Walton iOS app and the `bs` terminal client into one agentic coding suite, with Hermes Agent running builds inside isolated containers, preview repair, MCP and Skills support, and a handoff path to cloud deployment.

BuilderStudio is an agentic coding environment from WunderCorp that ships as three connected clients: a native macOS IDE, the Walton app for iPhone and iPad, and the `bs` command line tool for macOS and Linux. The pitch is that the same local daemon and agent loop sit underneath all of them, so a developer can start a build in the desktop workspace, drive it from a terminal, or capture an idea on a phone and move it into the structured workflow. The core workflow is agent-first. Requests are handed to Hermes Agent, which creates a dedicated project folder, mounts it into a local container as `/workspace`, and runs there rather than installing tools into the host shell. When the agent finishes writing files, BuilderStudio inspects the app shape and auto-starts a preview runtime. Parallel specialized agents, reusable Skills for interface, motion and component taste, MCP tool surfaces, project permissions and command execution are all exposed through the IDE or the `bs` client. Safety and shipping are treated as part of the same loop. SafeChain, workspace quarantine and Docker previews are positioned as a dual layer of protection before generated code touches the machine, and the control plane handoff lets a finished source package move into deployment, auth, integrations and app management on the team's own infrastructure. A `bs hook install --global` command adds interoperability with Cursor, Windsurf, Codex, Gemini CLI, Aider, VS Code and JetBrains, so BuilderStudio can act as the agent layer under an editor you already use. It suits developers and small product teams who are comfortable in a terminal or an IDE and want agentic generation with real isolation rather than a browser chat window. Model routing runs through OpenRouter, with an `openrouter/auto` default or a pinned model, and the public npm package and release manifest make installs straightforward. Buyers comparing it against single-editor AI assistants should weigh the local container setup and the OpenRouter account requirement against the breadth of the desktop, mobile and CLI coverage.

How do you use BuilderStudio?

1Install the bs CLI or download the macOS app
Pick the native macOS IDE for the full UI, or install the public npm package with `npm install -g @wundercorp/bs`. A shell installer is also available for a one-line setup on a fresh machine.
2Initialize OpenRouter
Run `bs init`, paste your OpenRouter API key, then keep the default `openrouter/auto` route or pin a specific model for local development.
3Set up the Hermes runners
Open the in-app `/hermes` help modal to see the prepare, setup, status and run order. BuilderStudio builds or refreshes the container images rather than installing tools into your host shell.
4Run an agent build in the workspace
From a project folder, run `bs gain "build the feature"` or launch the agent from the IDE. Each run targets a fresh project folder mounted into the container as `/workspace`.
5Review the automatic preview
When the agent finishes writing files, BuilderStudio detects the app shape and starts the package or static preview runtime so the result can be checked inside the isolated machine.
6Attach your existing editor
Install the global shell hook with `bs hook install --global --agent bs` so bs interoperates with Cursor, Windsurf, Codex, Gemini CLI, Aider, VS Code, JetBrains or a plain shell session.

Pros and cons

Pros

Same daemon and agent workflow across macOS IDE, iOS app and terminal CLIAI
Hermes Agent runs each build in a fresh container mounted as /workspace, keeping host machines cleanAI
Auto preview starts when the agent finishes writing filesAI
Shell hook interoperates with Cursor, Windsurf, VS Code, JetBrains and other editorsAI
SafeChain and workspace quarantine add real protections before generated code executesAI

Cons

Requires an OpenRouter key and account before the agent can do anything usefulAI
Container image builds and Hermes setup add friction compared with a single-install editor pluginAI
No published pricing information on the homepage, so commercial terms are unclearAI
Walton iOS coverage is limited to iPhone and iPad; there is no Android clientAI
Deployment handoff assumes a WunderCorp control plane, which narrows the useful audienceAI

How much does BuilderStudio cost?

Pricing

The homepage presents BuilderStudio as a free public download with a latest release available to all users, and no subscription tiers, per-seat charges or usage limits are listed. The CLI is distributed as a public npm package.

Learn more

Support

Support runs through the WunderCorp Discord community linked from the site, alongside in-app help such as the `/hermes` modal and a public release manifest.

Integrations

OpenRouter handles model routing; the shell hook connects BuilderStudio with Cursor, Windsurf, Codex, Gemini CLI, Aider, VS Code and JetBrains, and MCP servers can be attached as tool surfaces.

Features

Agentic coding through Hermes Agent with containerized execution, parallel specialized agents, Skills for interface and motion taste, MCP tool surfaces, SafeChain and workspace quarantine, Docker previews, automatic preview repair, source editing and packaging, OpenRouter model routing, IDE interoperability and control plane deployment handoff.

Frequently asked questions about BuilderStudio

How much does BuilderStudio cost?
The homepage presents BuilderStudio as a free public download with a latest release available to all users, and no subscription tiers, per-seat charges or usage limits are listed. The CLI is distributed as a public npm package.
How do you use BuilderStudio?
The walkthrough on this page covers 6 steps: 1. Install the bs CLI or download the macOS app 2. Initialize OpenRouter 3. Set up the Hermes runners 4. Run an agent build in the workspace 5. Review the automatic preview 6. Attach your existing editor.
What platforms does BuilderStudio support?
BuilderStudio is available on MacOS, iOS, Linux, Windows and Web App.
What does BuilderStudio integrate with?
OpenRouter handles model routing; the shell hook connects BuilderStudio with Cursor, Windsurf, Codex, Gemini CLI, Aider, VS Code and JetBrains, and MCP servers can be attached as tool surfaces.
What are the limitations of BuilderStudio?
Requires an OpenRouter key and account before the agent can do anything useful. Container image builds and Hermes setup add friction compared with a single-install editor plugin. No published pricing information on the homepage, so commercial terms are unclear.