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Open Cast

The Mubert ecosystem

What is the Mubert API?

The Mubert API is Mubert's generative-music API for developers: you call it with a description or a mood and it returns original, license-cleared music — for apps, games, streams, or any product that needs an endless supply of music it is allowed to use.

The Mubert products split by what you walk out with: Cast finishes a podcast episode, Fuse scores short-form video, and the Mubert API puts music generation inside your own app or game. They share one generative music engine.
One music engine, three ways out.

It is a developer product, not an editor. Where Cast is a place you sit and finish an episode, the Mubert API is something you build on top of — the music generation, without the interface.

Reach for it when the music needs to be produced by your own software rather than by a person: a fitness app scoring a workout, a game reacting to play, a video tool generating a bed per clip.

The fastest way in is the Mubert Skill — an Agent Skill that teaches an AI coding agent (Claude Code and other skills-compatible agents) the whole API: install it with “npx skills add MubertAI/skills” and ask the agent for music in plain language — it handles registration, generation, and licensing calls for you. The skill lives at https://github.com/MubertAI/skills, with setup notes at mubert.com/api/docs#skill.

Full reference and access are at mubert.com/api/docs.