# Legacy Observation

> Synthetic legacy skill used to verify loss-accounted conversion behavior.

- Skill: `skill-commons/legacy-observation` (Agent Skill)
- Install (CLI): `npx skillmds@latest add skill-commons/legacy-observation`
- Raw SKILL.md: https://api.skillmd.com/api/skills/skill-commons/legacy-observation/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Data & Analytics
- Author: skill-commons (https://skillmd.com/u/skill-commons)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/skill-commons/legacy-observation

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# Synthetic legacy observation

The body must remain byte-for-byte unchanged by a proposed projection.