---
name: cost-efficient-implementation
description: Use when a task is large, token-heavy, repetitive, or likely to exceed usage limits.
---

# Cost Efficient Implementation Skill

Preserve quality while reducing token usage and unnecessary work.

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## When To Use

Use this skill when:
- the task is large
- many files may be involved
- the user mentions credits, tokens, usage, limits, or cost
- the request could cause a large rewrite
- the user asks for efficiency

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## Main Rule

Make the smallest high-impact change that moves the project forward.

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## Process

1. Inspect relevant files first
2. Identify the smallest useful slice
3. Modify only necessary files
4. Run only relevant checks
5. Summarize briefly

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## Output Rules

Prefer:
- changed sections
- file paths
- concise summaries
- staged implementation

Avoid:
- repeating context
- full-file dumps
- broad rewrites
- speculative explanations
- unnecessary plans

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## Escalation

If the task is too large for one efficient pass:
- implement the first valuable slice
- summarize what remains
- recommend the next smallest step

Do not ask for permission unless blocked.