| What it does | See what ChatGPT, Claude, Perplexity and Google actually get from your site
| Free open-source CLI that checks Ahrefs Domain Rating for domains and lists, stores history in SQLite, and shares access via HTTP API.
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| Stage | Startup
| Established
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| Founded | 2026
| 2020
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| Based in | US
| Not given
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| Pricing model | Freemium
| Free
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| Pricing | Free scans with no account. One site: fix service $100 once with 30 days included, then Watch at $29 per month for up to 3 sites. Multiple sites: Developer API at $99 per month for 2,000 scans, Growth at $499 per month for 20,000 scans, or Agency at $249 per month for 40 domains. Add-ons: Evidence $
| Free to use; optional pay-per-URL service at $1.00 USD per URL on Index Pages platform.
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| Key features | - Free A–F audit with no signup required
- Tests 13 crawler identities including GPTBot, ClaudeBot, PerplexityBot, and Googlebot
- Monitors sites twice daily with regression alerts
- Signed, offline-verifiable answers using Ed25519 keys
- Checks machine files: robots.txt, llms.txt, agents.md, and structured data
- Implementation service to fix crawler access issues for $100
- Published rulebook with 106 publicly accessible rules
- API for agencies and tools measuring multiple sites
- Browser extension showing how crawlers see your homepage
- Blockchain-anchored daily seal of measurements via Bitcoin
| - Local SQLite cache with historical data and trend tracking
- HTTP API server mode for network-wide access
- DR3 and DR4 formula support
- MCP server integration for Claude and Cursor
- Agent skill with bash script compatibility
- Configurable via flags, environment variables, or TOML file
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| What makes it different | - Signed, offline-verifiable results anyone can check without trusting the company
- Tests what AI models actually receive from your site, not just SEO rankings
- Transparent, published rules that never change based on payment tier
- Built for the agentic web as a verification layer for agents to act autonomously
| - Free to use with no API unit costs, only requires free Ahrefs API key
- Single static binary with no dependencies, compiled with SQLite included
- Open source under MIT license with full source code on GitHub
- Historical tracking shows domain rating trends over time
- Runs on Linux, macOS, and Windows without external dependencies
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 28 ▼ −1 (down) since last check | 8 ● no change since last check |
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| Trust Flow (Majestic) | 9 | 3 |
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| Citation Flow (Majestic) | 31 | 24 |
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| Referring domains (Majestic) | 46 | 17 |
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CrawlCheck
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