Open-source SEO tools you can run yourself, read every line of, and hand to your AI agent
Stage
Not given
Not given
Founded
Not given
Not given
Based in
US
Not given
Pricing model
Freemium
Open source
Pricing
Free: 8 website scans per month, no account needed for first scan. Pro: $19/month with 20 scans, 30 saved brands, saved history. Agency: $49/month with 100 scans, unlimited saved brands, 12-month history, and live GPTBot checks.
Hosted app: free, all features unlimited. Self-hosted: free, open source under MIT licence. Search data from YepAPI: paid per lookup. Examples: keyword overview $0.47–$0.57, keyword ideas $0.07–$0.25, SERP checker $0.25–$0.26, rank check $0.02–$0.10, backlink checker $0.30–$0.34. New YepAPI accounts
Key features
Website readiness score measuring crawler access, brand clarity, and evidence
Crawler access checks with robots.txt analysis
Organization schema and structured data review
AI visibility checker querying multiple AI assistants
Copy-ready recommendations and fix templates
llms.txt and robots.txt generation
Brand name consistency checking
Multi-assistant comparison reports
Saved brands and scan history
Live GPTBot fetch and real-time checks
Keyword research with difficulty, volume and top 10 results
SERP checker for any location with desktop and mobile options
Rank tracking to top 20, 50 or 100 by country, city or coordinates
Backlink checker with monthly link history
AI visibility tracking across 120+ AI models with web search
Local rank checker with geo-grid maps
MCP server with 76 tools for AI agents
Google Search Console integration
Self-hosting with Docker on your own server
What makes it different
Prioritized fixes sorted by impact, ready to copy or hand to developers
Transparent scoring with every deduction clearly shown in Damage Report
Built for agencies managing multiple client brands with repeatable audits
Checks what AI systems can actually access and understand about your business
No installation required; does not modify your site
MIT licensed open-source code you can read and modify completely
Self-hosted option keeps all your data on your own server
Pay per lookup with spending limits controlled by you
AI agents have spending ceilings to prevent overspending
BrandKnown
OpenSEO