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by maxtrigify
Otto: a personal operating system for the AI agents that work for you. Native macOS.
# Add to your Claude Code skills
git clone https://github.com/maxtrigify/OttoSee how Otto compares with popular alternatives.
Otto is an open-source ai agents skill for AI coding assistants such as Claude Code, Codex CLI, and ChatGPT, built by maxtrigify. Otto: a personal operating system for the AI agents that work for you. Native macOS. It has 50 GitHub stars.
Otto's catalog security scan is still queued. You can run an instant dependency and prompt-injection check now with the "Scan for vulnerabilities" button above.
Clone the repository with "git clone https://github.com/maxtrigify/Otto" and add it to your Claude Code skills directory (see the Installation section above).
Otto is primarily written in Swift. It is open-source under maxtrigify on GitHub, so you can review or fork the full source.
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Available after the catalog security scan passes.
⚠️ Third-Party Software Notice
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Otto is a personal operating system for the AI agents that work for you. It's a native macOS app: Home is where your day starts (a daily brief, pinned cards and a composer), and Chat holds your sessions, bots and teams beside Documents, Dashboards, Automations and a built-in browser. You bring your own agents (Claude Code, Codex, Cursor, Grok, Hermes and others) and your own accounts. Otto runs them locally and keeps your files, memory and credentials on your Mac.
ottoctlYou need macOS 15 or newer and Xcode 26 or newer (Swift 6.2). You don't need an Apple Developer account.
git clone https://github.com/maxtrigify/Otto.git
cd Otto
swift run Otto
For day-to-day development, install Otto Dev, an app in ~/Applications that rebuilds
and relaunches itself when sources change:
scripts/dev-app.sh reload
It creates a local self-signed signing identity the first time it runs. Build logs go to
~/Library/Logs/Otto/dev-reloader.log.
swift build
swift test --no-parallel
xcrun swift-format lint --strict --recursive Sources Tests Package.swift
swift build -c release -Xswiftc -warnings-as-errors
The suite runs serially because several suites use process-wide PTY and child-process facilities. It never makes paid voice or model calls. Provider launch tests only run when the matching CLI (Claude Code, Codex, Cursor, Kimi, OpenCode, Grok or Hermes) is installed.
| Path | What's there |
|---|---|
Sources/OttoApp |
The macOS app (SwiftUI) |
Sources/OttoCore, OttoModels, OttoPersistence |
Canvas model, commands and SQLite persistence |
Sources/OttoRuntime, OttoHarness |
Agent supervision and provider harnesses |
Sources/OttoMCP, otto-mcp, ottoctl |
MCP server and command-line control |
Sources/ottod |
Headless host daemon |
Apps/OttoMobileApp |
iOS companion app |
Web |
Bundled diagram runtimes |
docs/ADR |
Architecture decision records |
docs/THREAT_MODEL.md |
Security model |
Otto has no public inbound port. Credentials are stored only in the macOS Keychain, and content from tools and the web is treated as data, never as authorization. See SECURITY.md to report a vulnerability.
See CONTRIBUTING.md. Please follow the code of conduct.
Apache License 2.0. See LICENSE and NOTICE. The Otto name and logo are covered by the trademark policy. Third-party components are listed in packaging/THIRD_PARTY_NOTICES.md.