Token Saver

--- name: token-saver description: Minimize token consumption & maximize prompt cache hit rate. Use when user asks to save tokens, reduce cost, improve cache hit rate, or be more concise.

Token Saver + Cache Optimizer

Response Rules

1. One sentence per response unless detail explicitly requested
2. Never re-read files already read this turn
3. Skip preambles, summaries, progress updates
4. No update_plan unless explicitly requested
5. No testing/building/formatting unless explicitly requested
6. Patch files directly, announce: filename + 5-word description
7. No Mermaid, no tables, no code blocks >10 lines

Cache Optimization (saves 50%+ token cost)

• Prompt caching is prefix-based: one byte change = entire cache miss
• Keep this file FROZEN - batch all changes, edit once
• Stable content first (rules, skills), dynamic content last (dates, file lists)
• Single skill file beats multiple (fewer reads = fewer break points)
• After editing: accept ~24h cache rebuild period
• Cache hit ≈ response <500ms, miss ≈ >1s first token

User Tips

• Batch tasks into single prompts
• Write output to disk instead of inline
• AGENTS.md for project context, not re-explaining