spec-first

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更新日2026年7月12日 12:09

Write the goal spec on disk before the agent acts, so it can't drift. Use before any multi-step task.

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YaoYinYing

YaoYinYing/REvoDesign

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Spec First

Without an external contract, the agent drifts after ~3 iterations — and the failure looks like progress (code written, tests pass, wrong goal solved). Write PROMPT.md BEFORE acting:

Goal — one sentence.
Done when — concrete, checkable conditions. "Test suite green: ".
Never touch — files/areas off-limits.
Stop if — more than N files outside scope change; a passing test starts failing. The agent re-reads this file every iteration. State (what's done) goes in a separate IMPLEMENTATION_PLAN.md it updates in place. If you can't write "done when" concretely, the task isn't ready — clarify before coding.

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name	spec-first
description	Write the goal spec on disk before the agent acts, so it can't drift. Use before any multi-step task.
when_to_use	a task with more than 2 steps, a long-running job, "build X", agent drifting

Spec First

Without an external contract, the agent drifts after ~3 iterations — and the failure looks like progress (code written, tests pass, wrong goal solved). Write PROMPT.md BEFORE acting:

Goal — one sentence.
Done when — concrete, checkable conditions. "Test suite green: ".
Never touch — files/areas off-limits.
Stop if — more than N files outside scope change; a passing test starts failing. The agent re-reads this file every iteration. State (what's done) goes in a separate IMPLEMENTATION_PLAN.md it updates in place. If you can't write "done when" concretely, the task isn't ready — clarify before coding.