Free tools, no signup
Free SEO tools for developers and AI agents
Free browser-based SEO tools: SERP snippet preview, robots.txt tester for AI crawlers, llms.txt generator, and MCP config generator. No signup.
SERP snippet previewCheck title and meta description pixel width before Google truncates them.Robots.txt tester (AI crawlers)Test any URL against your robots.txt for Googlebot, GPTBot, ClaudeBot, and 12 more.llms.txt generatorBuild a valid llms.txt file so AI assistants can read your site's key pages.MCP config generatorCopy-ready MCP JSON for Cursor, Claude Desktop, Claude Code, Windsurf, VS Code, and Zed.
Why these tools are free
Each tool runs entirely in your browser. Nothing you paste is sent to our servers. They cover checks you would otherwise do by hand on one page at a time. When you want the same checks across a whole site, ranked by impact and delivered to your AI coding agent, that is what the SearchSignal workspace does. See how SearchSignal works.
Run it on the whole site
Let your AI agent check every page, not one at a time.
SearchSignal crawls your site, ranks fixes by impact, and hands the list to Cursor, Claude, ChatGPT, or any HTTP agent. Free plan, no card. Pro adds licensed keyword and backlink data for $19.99/mo.