| What it does | Free AI coding agent for your terminal with no API key or monthly subscription
| A harness-agnostic framework for AI coding tools
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| Stage | MVP
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| Founded | Not given
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| Based in | DE
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| Pricing model | Freemium
| Open source
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| Pricing | 25,000 credits on signup. Five models (GPT-5 Nano, Gemini 2.5 Flash-Lite, Claude Haiku 5.5, DeepSeek V4 Flash, Gemini 3.5 Flash-Lite) free daily up to 60,000 credits per account. Premium models cost credits. Earn credits via offerwall offers, daily streaks, rating answers (every 50th turn), inviting
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| Key features | - Free access to five AI models daily (GPT-5 Nano, Gemini 2.5 Flash-Lite, Claude Haiku 5.5, DeepSeek V4 Flash, Gemini 3.5 Flash-Lite) up to 60,000 credits per account per day
- GitHub sign-in with no API keys needed
- Reads and searches files, edits code, and runs commands with explicit user approval
- Access to 13 models from five vendors on a single shared balance
- Optional ads in terminal (can be disabled) shown in up to three marked locations
- Earn credits through offerwall offers, daily streaks, rating answers, inviting others, and surveys
- 25,000 signup bonus credits
- User code and prompts never shared with advertisers
- Premium models available (Claude Opus 5.5, GPT-6 Sol) via earned or purchased credits
- No mandatory subscription or monthly renewals
| - 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 | - Completely free to start with 25,000 signup credits and five free models daily, no API key or credit card required
- Access 13 AI models from five vendors (OpenAI, Anthropic, Google, DeepSeek, more) on one shared balance
- Earn credits through optional offers and activities rather than paying subscription fees
- Ad-supported model keeps free tier sustainable long-term without trial-to-paid conversions
- All changes require explicit user approval via diff review before being applied
| - 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) | 1 ● no change since last check | 16 ● no change since last check |
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| Trust Flow (Majestic) | 1 | 0 |
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| Citation Flow (Majestic) | 28 | 20 |
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| Referring domains (Majestic) | 55 | 11 |
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Clixad
Harness Kit