OpenSEO
Open source alternative to Semrush and Ahrefs
...The platform exposes an MCP server so AI agents can work directly with SEO data and reusable agent skills. Users can run a hosted edition or self-host the application with Docker or Cloudflare. Self-hosted installations connect to DataForSEO with the user's own API key and use pay-as-you-go data rather than a mandatory software subscription. Because the code is open, teams can modify the workflows and build specialized internal SEO tools.