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cost-reduction

Use when a measured cost surface needs one-change-at-a-time reduction under frozen guardrails. Not for speed-only optimization: use optimize.

.devin/skills/cost-reduction/SKILL.md

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Sep 28, 2026
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# Cost reduction

## Contract

| Field | Bound contract |
|---|---|
| Trigger | A measured cost surface needs one-change-at-a-time reduction under frozen guardrails. |
| Authority | Human-gated: asks the human once before any production billing/infra mutation; otherwise reversible local: runs the pre-registered gate batteries and writes only to an append-only experiment log; rollback is version control. No remote mutation. Prose consent, invocation consent, prior-run consent, and post-start discovery do not approve an effect; end the run on scope drift. |
| Side effect | Guardrail-safe measured cost reduction. Each proposed change is adopted with N=5 gate evidence or recorded dead with the measurement that killed it. |
| Done | The fixed budget target is reached without any guardrail regression, or every proposed change is resolved as adopted or dead. |
| Stop | no safe saving; no progress; blocked. Bound: exact approved billing/infra scope, budget target, guardrails, and pass cap. |

## Inputs