Show HN: Concord – let Claude Code, Codex and Cursor talk to each other

Recently I've been running more and more agents in parallel however I noticed that they have no task context of what the other agents are doing even when a lot of work is interconnected

It's like taking Slack away from a team. Agents duplicate work, make conflicting changes, and step on each others' toes simply because they can't talk to each other.

Concord is an MCP + CLI that lets coding agents claim work, see what other agents are doing, and message each other live.