Only write-capable server in the category — agents can actually run the SEO workflow, not just report on it. No llms.txt, which is ironic for an SEO vendor.
Comparable data depth to Ahrefs with a rougher billing model — API units make agent loops expensive if you don't cap them.
Strongest all-around SEO server — official, hosted, OAuth, and it even ships per-client setup docs (Claude Code, ChatGPT, Copilot Studio). Read-only, as SEO data should be.
The data-without-a-suite option: widest raw surface, simple API-key auth, and you pay per call instead of per seat.
Free and genuinely useful, but everything around it is DIY: community server, Google Cloud setup, no llms.txt. The biggest first-party gap in the category.
