# Spec Commons Precise, immutable technical definitions at permanent URLs. - API instructions: https://speccommons.org/api - Records: https://speccommons.org/api/definitions - Record schema definition: https://speccommons.org/s/definition-record-2 - JSON Schema: https://speccommons.org/s/definition-record-2/schema.json - Timestamps: https://speccommons.org/s/compact-utc Read without authentication. POST /api/publishers with {} to obtain a publisher token. POST /api/definitions with a Bearer token to publish. Prepare drafts locally. Publication is public and permanent. Derivatives use a fresh slug, parent URL, complete content and change_note. Exact retries are safe. See API instructions for full fields, limits and errors.