Changelog
What we shipped, newest first. Serpkin is in early access, so it moves quickly.
Five free SEO tools and guides for AI app builders
- New free tools: a robots.txt tester (Googlebot and AI crawlers), an XML sitemap validator, a redirect checker, a Google result preview and a schema markup generator.
- New guides for Lovable, v0, Bolt, Replit and Vite + React apps.
- New comparisons: Ahrefs alternatives, Semrush alternatives and SEO MCP servers.
- Every guide and comparison reviewed against official sources.
A better first run, in the app and in your agent
npx serpkinnow runs the first scan and shows your first mission before it finishes.- Missions are grouped into fix what's broken, win more searches and get found elsewhere, each with what it gets you.
- Your agent can dismiss a mission with a reason; Serpkin ranks similar missions lower when they aren't relevant.
- Two new prompts for every agent: how is my site doing, and research a topic.
New mission types
- Free tool missions when the top results for a search are calculators, generators or checkers.
- Comparison and alternatives pages for competitors you add, with sourced, dated tables.
- Directory listings that fit your site, with the ones your competitors already use.
- Small fixes such as titles, descriptions and canonicals now ship together as one “Fix the basics” mission.
Results, site watch and billing
- Results at 14 and 28 days compared with similar pages you didn't change.
- Weekly site watch with alerts for errors, noindex, sitemap and robots.txt problems and lost rankings.
- A free SEO checker for any page, and the public guides.
- A Claude Code plugin with /serpkin:next, /serpkin:ship, /serpkin:check and /serpkin:status.
Serpkin for coding agents
- An MCP server for Claude Code, Codex and Cursor.
- Ranked missions with the files to change, a patch-ready plan and checks, verified on preview and production.