Cost impact review
21 markdown-first software delivery workflow skills for Claude Code, Codex, and compatible agents. Standalone skill kit covering planning, debugging, CI, review, security, rollout, performance, data quality, and post-incident workflows.
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Use when a change may increase infrastructure or runtime cost (compute, storage, network egress, third-party API calls, observability volume) and the team needs a focused cost-impact review before merge or rollout.
The file declares its own license as MIT. That is the author’s claim about this one file, and it is not the same thing as the license GitHub reports for the repository, which is listed with the other numbers below.
SKILL.md
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Cost Impact Review
Use this skill when the main risk is unit economics or infra cost regression, not correctness.
Trigger Conditions
Use this skill when:
- a change adds new database queries, API calls, or background work that may scale per-request
- caching, batching, or pagination behavior is changing
- third-party SaaS or paid API usage may grow
- log, trace, or metric volume may increase noticeably
- the team wants a cost regression check before release
Do not use this skill for license/compliance review or for performance investigation of an existing slowdown.
Workflow
- Identify the change and the cost drivers it touches.
- Estimate cost direction: per-request, per-user, per-event, or per-deploy.
- Compare with cheaper alternatives (caching, batching, lazy paths).
- Flag risk hotspots that scale with traffic.
- Recommend smallest mitigations or a measurement plan.
- Suggest verification once rollout begins.
Output
For non-trivial work, provide:
- affected cost drivers
- likely cost direction and rough magnitude
- risk hotspots
- recommended optimizations or guards
- verification plan
Coordination
After cost review:
- use
architecture-refactor-guidanceif a structural change is the right mitigation - use
release-rollout-strategyto add cost-aware checkpoints - use
ship-readinessif cost risk is the last release blocker
Invocation Examples
- "Use cost-impact-review from dev-workflow-kit to check whether this change increases infra or per-request cost."
- "Use cost-impact-review to estimate whether this new third-party call will materially raise our bill."
- "Use cost-impact-review before release because the new query might run on every page load."