# Evidence Rules

> Evidence and citation rules for all agents. Requires factual claims to be cited, unknowns to be explicit, and direct quotes when wording matters.

- Skill: `input-output-hk/evidence-rules` (Agent Skill)
- Install (CLI): `npx skillmds@latest add input-output-hk/evidence-rules`
- Raw SKILL.md: https://api.skillmd.com/api/skills/input-output-hk/evidence-rules/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: input-output-hk (https://skillmd.com/u/input-output-hk)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/input-output-hk/evidence-rules

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## Evidence Rules

- State when something is unknown or unverified instead of implying confidence you do not have.
- Support factual claims with citations to files, artifacts, or URLs.
- Use direct quotes when exact wording matters.