# Schema Author

> Author and register a canonical governed schema with fixtures and consumer metadata from a schema brief.

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

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# Schema Author

Read the schema brief. Select the real authority language, assign a stable
logical name and `https://aiwg.io/schemas/` identity, create the canonical
contract and valid/invalid fixtures, declare consumers/dependencies/policy and
projections, then regenerate the catalog. Run `aiwg schema lint`, `check-refs`,
fixture validation, projection verification, and typecheck where applicable.
Do not substitute prose examples for an executable contract.