| What it does | Check AI agent replies against configured rules and verify signed records
| Free AI detector that checks text for signs of AI writing with no sign-up required
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Freemium
| Free
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| Pricing | Free: local open-source checker, browser policy checks, six read-only MCP tools, regression export and offline verification. Managed Check API: $1 per 1,000 checked replies, USD, monthly usage billing through Stripe.
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| Key features | - Check agent replies against configured pricing, forbidden phrases, and action records
- Policy Check tool with browser interface for testing rules
- Model Context Protocol endpoint for Claude, ChatGPT and other MCP clients
- Offline verification with signed records and Merkle proofs
- Repair Lab for reproducing and fixing integration failures
- Managed Check API with pricing transparency
- MIT-licensed open-source local checker
- Framework connectors for LangChain and Vercel AI SDK
- MCP Chaos proxy for testing agent behavior
| - Score-based detection showing how closely text resembles AI writing
- Highlighted passages showing flagged sections in context
- Support for multiple file formats including PDF and Word documents
- No account or registration required
- Automatic sectioning for long documents
- Detection of multiple AI writing models
- No submission history or database storage
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| What makes it different | - Verifiable AI agent compliance without authorization or permission granting
- Evidence and records portable across platforms and models
- Transparent per-reply pricing with clear usage examples
- Open-source core with portable verification
| - Completely free with no sign-up required
- Works with documents up to 20 MB in multiple formats
- Provides context-aware highlighting alongside original text
- No data retention or published results
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 0 | 2 |
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| Citation Flow (Majestic) | 0 | 14 |
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| Referring domains (Majestic) | 0 | 4 |
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Curbi
CheckerAI