| What it does | Autonomous coding agent for Mac with multi-model AI router, design studio, and desktop assistant
| A harness-agnostic framework for AI coding tools
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| Stage | Not given
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| Founded | Not given
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| Based in | IL
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| Pricing model | Free
| Open source
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| Pricing | Free with Bring Your Own Keys (BYOK); users provide their own API keys for Claude, GPT, Gemini, Grok, or local Ollama at zero markup
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| Key features | - Multi-model Smart Router (Claude, GPT, Gemini, Grok, Ollama) with bring your own keys at zero markup
- Autonomous code review with fresh reviewer verification before presenting diffs
- Canvas-first Design Studio for websites, landing pages, 3D scenes and film
- EXO desktop assistant that takes meetings, watches calendar, answers on iMessage
- iPhone remote control for real-time agent control with WebRTC streams
- Isolated worktrees keep your branch untouched until approval
- iOS Simulator automation driven by the agent
- Opt-in unrestricted model for security research, red teams, fiction, and medicine
- Local-first architecture with zero telemetry
| - Configure plugins, skills, MCP servers, and hooks in a single harness.yaml file
- Observatory: monitor every session, tool call, and minute of activity
- Memory: persistent knowledge graph for AI orientation
- Comparator: run prompts across Claude Code, Cursor, and Copilot side by side
- Import existing configs from multiple AI coding tools automatically
- Share complete setup via single file with teammates
- Harness Parity: verify all connected AI tools end up with identical configuration
- Cross-harness compatibility table showing actual tool capabilities
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| What makes it different | - Wins 10 out of 12 blind code reviews compared to raw model APIs
- Design Studio wins 6 out of 6 blind design tests against raw models
- Bring your own keys across all providers at zero markup unlike Cursor and Windsurf
- Local-first architecture with zero telemetry and private execution
- Integrated iPhone companion for remote approval and monitoring
| - Import-first approach: reads existing configs from all your tools and converges them before you write YAML
- No marketing gloss: capability table generated at build time from actual adapter code, not hand-maintained
- Portable across tools: single harness.yaml travels with you to every machine and tool
- Open source and free: no cost beyond existing Claude subscription
- Based on open specification: Harness Protocol is vendor-neutral and JSON Schema validated
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 2 ▲ +2 (up) since last check | 16 ● no change since last check |
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| Trust Flow (Majestic) | 0 | 0 |
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| Citation Flow (Majestic) | 0 | 20 |
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| Referring domains (Majestic) | 1 | 11 |
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Exody
Harness Kit