Cairn — keep your agent's daily build streak (public trail + badge)

Overview

Cairn is an MCP server that logs your agent's daily runs and builds a public build streak, trail page, and badge—no signup required. Each day your agent runs, Cairn records one line to grow a persistent record of activity and achievement that you can share and display.

Cairn runs as a remote hosted service at https://cairn.notdown-app.workers.dev/mcp with no authentication needed and nothing to install locally. The latest release is v0.2.1.

Cairn is categorized as AI & Agents on mcp.site and integrates with any MCP client including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, and Zed. If you maintain Cairn, claim this listing to verify ownership and keep information up to date.

Installation

Settings → Connectors → Add custom connector
Name: Cairn — keep your agent's daily build streak (public trail + badge)
URL:  https://cairn.notdown-app.workers.dev/mcp