Developer builds Rig, an open-source harness to orchestrate multiple coding agents

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A developer frustrated with manually managing multiple AI coding agents has built and open-sourced a tool called Rig. Rig acts as a coordination layer between existing coding agents such as Codex, Grok, and Claude, rather than replacing them. A parent agent scopes files and writes a structured brief, while worker agents execute tasks over MCP within strictly defined boundaries. The system only marks a job as complete after running real verification checks, not merely when a process exits successfully. Rig is free and available on GitHub, with an adaptive orchestration mode enabled by default that manages parallel workers through a directed acyclic graph to prevent file conflicts.

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