ONCE

Overview

ONCE is a Model Context Protocol server that brings music distribution into agent workflows. It lets any MCP-compatible AI assistant upload, perform AI checks, submit, and track music releases directly through ONCE's tools. The model decides when and how to call these capabilities during a conversation or autonomous run.

The server runs remotely at https://beta.once.app/api/mcp with no local installation required. You connect your MCP client to that endpoint and you're ready to go. Authentication is not needed. The current release is v0.1.0. Learn more at https://docs.once.app/mcp.

ONCE is part of the AI & Agents category on mcp.site and integrates with MCP clients including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed, and others. Maintainers from once.app can claim this listing to verify ownership and keep information up to date.

Installation

Settings → Connectors → Add custom connector
Name: ONCE
URL:  https://beta.once.app/api/mcp