Cairn as MCP tools

Your AI can use websites. But it forgets how, every single time. Cairn makes it remember.

This gives Claude Code, Cursor, Codex or any MCP client a browser that remembers. Your AI walks a site once and Cairn writes down the route; every run after that is one tool call, no page reading, and zero model calls. When the site changes, Cairn hands back the single step that moved rather than the whole task.

pip install cairn-browser-mcp
playwright install chromium        # the browser is a separate download

claude mcp add cairn -- cairn-mcp

Then just ask, in your own words: "go to github.com/microsoft/playwright and tell me how many open issues it has." The first time it explores. After that it is one call.

No API key. There is no model call anywhere in this package or anything it imports — your AI does the thinking and Cairn supplies the browser and the memory.

Optional extra, so one agent can buy a trail from another over x402 on Base:

pip install "cairn-browser-mcp[market]"

The engine on its own is cairn-browser.

Full documentation, the tool list, and the deletion test that proves the memory is load-bearing: https://github.com/rohit-jsfreaky/cairn

MIT licensed.