Otto Engineer

Otto Engineer is an AI-powered autonomous coding sidekick that tests its own code, iterates until it works, and executes code safely within a browser-based environment. Built on Web Containers, Otto runs Node.js and OS commands in a virtual in-memory file system, requiring zero setup and enabling real-time experimentation directly in chat with an embedded terminal and editor.

Overview

• Otto continuously tests, debugs, and refactors code it generates, reducing hallucinations and increasing reliability.
• It operates in a real environment: can install npm packages, adjust TypeScript configs, and write its own tests.
• Everything runs entirely in the browser, with isolation and safety guarantees, allowing rapid prototyping of full-stack features (e.g., REST APIs, data processing utilities, utilities, and more).
• Ideal for prototyping starter projects, implementing utilities, and solving thorny TypeScript issues autonomously.

How Otto Works

1. Propose: Otto starts with a task (e.g., create a todo list backend with CRUD and DB).
2. Generate & Scaffold: Otto generates working starter code using desired libraries and business logic, ready for download in one click.
3. Execute & Test: Otto runs the code in-browser, executes commands, and writes tests to verify behavior.
4. Debug & Iterate: If issues arise, Otto iterates, fixes errors, re-tests, and refines until passing.
5. Deliver: Final working code and tests are produced, ready for integration or deployment.

Use Cases

• Prototyping: Quickly generate starter projects or features with the exact tech stack you want.
• Debugging: Autonomously debug complex TypeScript and runtime issues.
• Code Generation: Produce utilities and mini-libraries with automatic testing.
• Learning & Exploration: Observe autonomous coding decisions and testing strategies in real time.

Security & Isolation

• Code executes in a sandboxed browser environment with an in-memory filesystem.
• No external execution outside the browser sandbox, minimizing risk of unintended side effects.

Safety Considerations

• Otto operates within browser-based containers; ensure you review generated code before production use.
• Follow best practices for security, dependencies, and sensitive data handling in your projects.

Core Features

• Autonomous code generation with self-testing and iterative debugging
• In-browser, sandboxed Web Container runtime with Node.js and OS command execution
• Zero-setup workflow: start a new chat and begin prototyping immediately
• Real environment execution: install npm packages, adjust TS configs, and write tests
• End-to-end code delivery: starter code, tests, and optional one-click downloads
• Safe isolation: in-memory filesystem and sandboxed execution within the browser
• Quick prototyping for APIs, utilities, and complex TypeScript tooling