DocumentationOfficial documentation for ONCE artists, developers, and integrations.
For Artists
User Guide
Get started with ONCE and learn how to release your music.
Releasing Music
Learn how to work with the chat agent to submit releases.
Publishing with ONCE
See ONCE publishing workflow, requirements, and track registration steps.
Discord
Use ONCE in Discord for community support and bot Q&A.
Things to Know
Important information about dates, edits, and platform behaviors.
FAQ
Quick answers to common questions.
For Developers
MCP Server
Agent-driven release submission using Model Context Protocol.
Agent Setup
Connect Claude, ChatGPT, Cursor, or any MCP client.
API Reference
Complete endpoint documentation.
Coming Soon
REST API
Direct API access for custom integrations.