Jeffy Loop Forces AI Coding Agent to Verify Every Fix Before Claiming Success

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Jeffy Loop is an open-source coding agent built for Claude Code that enforces a strict audit-fix-verify workflow, preventing the model from marking tasks complete without independent confirmation. Developed from Geoffrey Huntley's Ralph technique, it maps a project's public surface, builds a backlog of findings with runnable acceptance checks, and executes one verified task per iteration. Any change that breaks existing tests is automatically reverted through a built-in verify gate. The tool has been tested across 52 open-source projects in 13 programming languages, uncovering high-severity bugs that had been hidden behind passing test suites. Unlike conventional agents that self-report success, Jeffy Loop makes completion a machine-enforced condition rather than the model's own assessment.

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