Toadstone MCP Server
Free, self-hosted SEO crawler with an MCP server for AI agents
Toadstone is a Developer Tools MCP (Model Context Protocol) server: Free, self-hosted SEO crawler with an MCP server for AI agents. It is Elastic-2.0-licensed and self-hosted from its source repository. Listed on MCP Collection since October 2026.
About Toadstone
Toadstone is a free, self-hosted SEO crawler with a local MCP server (ten tools, stdio) so Claude Code, Claude Desktop or Cursor can read a crawl, list what is wrong with a site with evidence, and start a crawl. It is read-only by default, only crawls hosts you have already crawled, and caps an agent-started crawl at 2,000 URLs. It needs Toadstone running locally; it is not a hosted endpoint. Source-available under the Elastic License 2.0 (not OSI open source).
How to connect Toadstone to Claude, Cursor or VS Code
Toadstone is self-hosted. Install it from the source repository, then register its start command in your MCP client's config (Claude Code, Cursor, Windsurf or VS Code).
{
"mcpServers": {
"toadstone": {
"command": "<start command from the README>",
"args": []
}
}
}The exact command (often npx, uvx or docker) is in the project README at github.com/spcaeo/toadstone.
Toadstone FAQ
What is Toadstone?
Toadstone is a Model Context Protocol (MCP) server in the Developer Tools category. Free, self-hosted SEO crawler with an MCP server for AI agents. MCP servers expose tools that AI assistants like Claude can call during a conversation.
How do I use Toadstone with Claude or Cursor?
Toadstone is self-hosted. Install it from the source repository, then register its start command in your MCP client's config (Claude Code, Cursor, Windsurf or VS Code).
Is Toadstone free to use?
Toadstone is published under the Elastic-2.0 license, so the software itself is free to run. Hosted or API-backed servers may have their own usage tiers; check the project homepage.
Where is the source code for Toadstone?
The source is at github.com/spcaeo/toadstone.