Harness Relay

About

Harness Relay is a desktop app that runs several coding agent CLIs together in one chat. A lead agent proposes a team for each question, assigning roles, models and turn order. After the user confirms, the agents on the user's machine work on the code and respond to each other. It starts the CLIs the user already has installed, such as Claude Code, Codex, Grok, Cursor Agent and Copilot, so it does not call model APIs itself.