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Cobalt

Cobalt acts as your personal AI developer by taking on coding tasks directly in your GitHub repository. It handles the setup, testing, and running of your app so you can review finished work without touching your local machine.

About Cobalt

Who It's For

Cobalt is designed for software developers who want to save time on busy work. If you are tired of setting up development environments or waiting for free time to tackle small features, this tool is for you. It helps anyone who prefers to review code rather than write every single line from scratch.

What You Get

You get a powerful assistant that has its own computer in the cloud. It manages your files, runs your tests, and hosts a live preview of your app. Because it lives online, your tasks keep running even when you close your laptop. You receive clean pull requests ready for your final look.

How It Works

You simply connect your GitHub repository and describe what you need in plain English. Cobalt starts a virtual computer, writes the code, and tests it for you. You can watch your app update in real-time as it works, then review the finished changes whenever you are ready.

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Features & Capabilities

๐Ÿค– AI Development Workflow

Autonomous Coding Agent

Uses models like OpenAI Codex to build features, fix bugs, and create prototypes directly in your repository.

Seamless GitHub Integration

Automatically clones repositories, commits changes, and opens pull requests for your review.

Multi-Agent Support

Flexibility to choose between various coding agents like Codex, Cursor, OpenCode, or Pi for your tasks.

๐Ÿ’ป Cloud-Powered Environments

Isolated Cloud Computing

Provides a dedicated cloud computer for every task, eliminating the need for local setup or environment juggling.

Parallel Execution

Allows running multiple features, experiments, or spikes simultaneously on separate, isolated computers.

Full-Stack Persistence

Maintains running services and application state even after you close your browser, allowing for persistent work sessions.

โšก Preview & Infrastructure

Live App Preview

Displays a clickable, updating preview of your application alongside the chat interface as code is written.

Resource Customization

Allows configuring specific CPU and memory limits for repository tasks to ensure optimal build and runtime performance.

Automated Setup Templates

Enables saving configurations and dependencies as named starting points to accelerate the creation of new task environments.

Screenshots

See Cobalt in action

Use Cases

Automating Feature Development

Software teams often struggle with a backlog of minor features that are delayed by larger project priorities. Cobalt solves this by allowing developers to describe a feature in plain language, which the AI then builds, tests, and delivers as a complete pull request, allowing teams to ship faster without manual coding overhead.

Software EngineeringFor: Software Developer

Rapid Bug Resolution via Isolated Environments

Reproducing bugs often requires complex local environment setups that vary between machines. Cobalt eliminates this by spinning up an isolated cloud computer for every task, allowing developers to immediately reproduce, fix, and verify bug fixes without altering their local development environment.

Software EngineeringFor: Frontend and Backend Developer

Parallel Prototyping and Experimentation

Product teams and developers frequently need to test ideas before committing to long-term implementation. Cobalt enables the parallel execution of multiple experiments or spikes in individual, persistent environments, providing live, clickable previews of prototypes to validate concepts quickly.

TechnologyFor: Product Engineer

Managing Complex Full-Stack Deployments

Engineers often face difficulty maintaining local instances of complex multi-service architectures involving databases and Docker containers. Cobalt simplifies this by providing cloud-based, persistent computers that run the entire application stack, enabling developers to manage complex codebases without juggling local dependencies.

Cloud InfrastructureFor: Full-stack Developer

Specifications

Deployment
Browser
Cloud
Target Audience
Individual
Startup
Business
Complexity
Developer

Integrations

GitHub
OpenAI Codex
ChatGPT
Claude Code
Pi
OpenCode

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