# Run Economics

> Use when choosing between cheap probes, worker runs, expensive ruler runs, or long keepalive waits.

- Skill: `100yenadmin/run-economics` (Agent Skill)
- Install (CLI): `npx skillmds@latest add 100yenadmin/run-economics`
- Raw SKILL.md: https://api.skillmd.com/api/skills/100yenadmin/run-economics/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: 100yenadmin (https://skillmd.com/u/100yenadmin)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/100yenadmin/run-economics

---


# Run Economics

Match the instrument to the question.

## Mechanism

Use cheap probes when the question is "does this mechanism fire?"

Examples:

- hook blocks stale wait
- cue reaches worker
- small parser case passes
- one narrow acceptance test catches the bug

## Ruler

Use premium runs when the question is "does this meet the bar?"

Examples:

- release readiness
- final quality score
- customer-facing proof
- hard architectural judgment

## Cache

For short waits, preserve the prompt cache with a sleep-tick if no inline work
remains. For long waits, let the cache die once. Do not ping through multi-hour
idle windows by default.

## Ledger

For scored or judged runs, record provider, model or lane, scenario, method,
score, and proof boundary.