Trail is a Model Context Protocol (MCP) server: Issue tracker and durable project memory for your coding agent, scoped to the folder you open. Because it speaks the Model Context Protocol, AI assistants can use Trail as a set of callable tools instead of you copy-pasting between apps.
It runs locally: the npm package usetrail speaks MCP over stdio on your machine. No credentials are required — it works out of the box. The current release is v1.21.0, published under the MIT license, with source at arsprengel/trail-mcp on GitHub.
On mcp.site, Trail sits in the AI & Agents category. Any MCP client can use it — Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed among them — via the install snippets below. If you maintain Trail for usetrail.dev, claim this listing to verify ownership, earn the Verified badge, and keep the details current.