Guide

For Live users

Ableton Live Extensions are small right-click tools for Live 12 Suite (public beta 12.4.5 or later). They run once when triggered from a context menu and can read and edit your Set's structure — tracks, clips, MIDI, devices, tempo — but never process audio in real time (that's Max for Live's job).

Get the Live 12 Suite public beta via Ableton's beta program (Centercode).
Find an extension in the catalog and download its .ablx from the author.
In Live: Settings → Extensions, drag the file in.
Right-click a clip, track, or the Set — the new command is in the menu.

Safety: an extension is a program. ablx.live links only to authors' own pages, marks listings whose download location we've checked, and honors author corrections — but always use your judgment, exactly as Ableton's own FAQ advises.

For developers

Extensions are TypeScript/JavaScript on Node, built with Ableton's Extensions SDK and bundled to a distributable .ablx. Two ways to build one:

Code: the SDK directly — docs at the link above.
No code: Patchwright — wire the logic as a node graph (or describe it in plain language), preview against a simulated Set, export a working .ablx from the browser.

To list your extension here, add one JSON file to the registry via pull request — see Submit. Free, no exclusivity, we link to your page and your checkout.

For AI agents

Machine-readable entry points: /llms.txt (site overview) and /api/registry.json (the full catalog, CORS-enabled, stable field names documented in the registry schema).