A broken link checker that only reports links broken when it has proof, running on your own server with no cloud service
Open-source SEO tools you can run yourself, read every line of, and hand to your AI agent
Stage
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Founded
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Based in
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Pricing model
Freemium
Open source
Pricing
Free version available with no restrictions. Pro Single: €29/year for 1 site; Pro Plus: €59/year for 5 sites; Pro Agency: €99/year for 25 sites. Prices shown are net of VAT.
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
Verifies broken links through confirmed 404/410 codes or three consecutive failed checks
Checks internal links, external links, images, links in comments and redirect chains
Identifies links to drafts, private and pending posts
Reads pages as visitors see them, finding links built by page builders
AI assistant integration on WordPress 6.9 and later
URL replacement with preview and undo (Pro add-on)
CSV export (Pro add-on)
Silent list for domains that never answer robots
Requires WordPress 6.1 or later and PHP 7.4 or later
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
Runs entirely on your own server with no cloud service or account required
Free version is complete with no restrictions or trial limitations
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
Onsite Link Verdict
OpenSEO