Concord Mcp

Concord is an open source MCP server that gives coding agents a shared work state so they can coordinate before their changes collide. Installed from npm and run locally against a repository, it lets agents such as Claude Code, Codex and Cursor see who is working on what, reserve the files or scope they intend to edit, message each other mid session and keep task memory of decisions and assumptions. It is aimed at engineering teams running several agents in parallel on the same codebase, where two agents editing the same file often only surface as a merge conflict at pull request time. Concord moves that coordination earlier. Its tools cover presence, claims on scope, agent to agent messages, task memory, ownership that can be assigned, accepted or handed off, and review packets that collect evidence before a pull request is opened. In a typical flow an agent starts work, Concord warns of an overlap with another agent, the work is transferred or adjusted, and the finished task arrives at review with its evidence attached. It works with any MCP capable client. No pricing is published. The open source version is available now and runs locally in your repository. A hosted Concord Cloud for coordination across machines is marked as coming soon, with a waitlist on the site. The vendor's own benchmark is small, six agent runs with one designed collision, and it states that it measures exposure to two agents writing the same file rather than a reduction in merge conflicts.