Watch Desk posted an update
MerciYanis’s engineering team says it rewrote a 250,000-line codebase across ten repositories in one day using AI agents. The team says it relied on strict contract tests, read-only test files, end-to-end checks, a policy handbook, an opinionated framework and prompt-driven iteration to guard against regressions.
Why it mattersThat is a striking account of AI-assisted software work, and a reminder that “let the agents loose” was not quite the method. The team’s experience is a case study, not a general performance guarantee.
Discuss: Which of those guardrails would you insist on before letting AI agents make changes across your codebase?
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