Ableton Extensions FAQ
This FAQ answers common questions about system requirements, setup, and usage of Ableton Extensions.
About Extensions
System requirements
Installation and setup
Using Extensions in Live
Security and compatibility
Community and support
About Extensions
What are Extensions?
Ableton Extensions, introduced in Live 12.4.5, provide a way for users to develop and use their own tools within Ableton Live using the Extensions SDK.
Extensions can interact with tracks, clips, MIDI, devices, tempo, and other parts of a Live Set to automate tasks, transform musical data, and customize Live’s capabilities.
What is the Extensions SDK?
SDK stands for Software Development Kit – a package of tools, code libraries, and documentation that enables developers to build software for a specific platform without needing to re-create core functionality from scratch.
The Extensions SDK is an open JavaScript toolkit for building that lets anyone build custom tools that work directly inside Ableton Live. It provides APIs (Application Programming Interfaces) for interacting with Live, along with examples and utilities to help create custom tools that run directly inside Live.
Who is the Extensions SDK for?
The Extensions SDK is for anyone who has an idea for a tool in Live, and wants to create that tool themselves.
Do I need to be a developer to build an Extension?
The SDK is built on standard web technologies that AI coding assistants handle well. If you can clearly describe your idea for an Extension, you may be able to build a working Extension with AI assistance, without any coding experience.
System requirements
In which versions and editions of Live are Extensions available?
Extensions are available in Live 12 Suite Beta, version 12.4.5 or later. Extensions are not available in Live Standard, Intro, or Lite.
How do I access the Live Beta?
If you own a Live 12 Suite license, you can access Live 12 Suite Beta and the Ableton Extension SDK via Centercode.
What are the minimum system requirements for Extensions?
Extensions work on all systems that support Live 12 Suite, version 12.4.5 or later. For detailed information visit the Live Minimum System Requirements.
Learn more about Computer specifications for running Ableton Live.
Installation and setup
What is needed to develop Extensions?
Developing with Extensions requires the following to be installed on your computer (macOS or Windows):
- The Ableton Extensions SDK
- The NodeJS development environment v24.16.0 (LTS) or higher
How much disk space does the Extensions SDK need?
The Extensions SDK uses less than 5MB of disk space.
Are Extensions free?
The Extensions SDK itself is free. However, third-party Extension developers may choose to charge for their products.
Where can I find more information about Extensions?
While Live 12.4.5 and Extensions are in beta, check out the Extensions SDK page in our Centercode forum for more information.
Using Extensions in Live
What can I do with Extensions?
Extensions can be programmed to affect tracks, clips, MIDI notes, devices, tempo and more. You can build Extensions to:
- Transform MIDI
- Analyze song and track structure
- Automate repetitive tasks
- Create unusual generative patterns
- Connect to external services
- Even play games in Live!
What can't I do with Extensions?
Extensions are intended for discrete tasks that are completed and closed after a single use as explained above.
Extensions are not designed for continuous, real-time, or signal-processing tasks. Specifically, they cannot be used for:
- Real-time audio processing, such as audio effects, synthesis, filtering sound while it plays.
- Real-time MIDI processing or monitoring, like transformation as MIDI is played or recorded.
- Developing devices like synthesizers, samplers, or audio effects that run inside Live’s device chain.
- Background processing during playback or recording, like analysis of incoming audio/MIDI streams.
- Performance tasks requiring sample-accurate or event-accurate timing during playback.
- Real-time interaction with transport, such as reacting to playhead position or incoming signal.
- Real-time and performance-oriented tools can be created and customized using Max for Live.
How do I use Extensions in Live?
After you install an Extension in Live (via Settings → Extensions), here's how to access it:
- Right-click an item in your Set (e.g. a MIDI clip, track, or other item).
- Look in the context menu that appears.
- If the Extension can be used on that item, it will show up there.
- Click the name to run or edit the Extension.
After choosing it from the menu, a pop-up will appear in which you can alter the parameters of the Extension before running it. Triggering an extension causes it to run once, performing its task which returns a result or applies changes, then stop.
Why don’t I see an Extension in the context menu?
Not every Extension can be applied to every item in Live. Depending on its functionality, each may be limited to, for example, MIDI clips, Audio clips, or another specific type of item. If you don’t see an Extension listed, it usually means it can’t be used on the selected item.
Security and compatibility
How do Extensions run inside Live?
Extensions are built on the NodeJS platform, a free, open-source, cross-platform JavaScript runtime environment. Extensions are triggered from the right-click context menu for the relevant item in your Set.
Are Extensions safe?
The NodeJS platform is a separate framework outside Live, which enables a wide range of powerful technologies to integrate with Live. This ability also comes with the risk of third parties creating malicious Extensions with ill intent. As with any software you download from the internet, exercise caution and make sure you trust the source.
Are Extensions available across all my Sets?
Once an Extension is installed, it is available for use within any Set opened in Live Suite 12.4.5 or later.
How are Extensions different from Max for Live?
Max for Live is a deep creative patching environment offering synthesis, custom instruments, and complex signal chains. Extensions are JavaScript-based tools that interact with the Set itself, affecting structure, data, and workflow.
Will Max for Live be replaced by Extensions?
Max for Live and Extensions serve different needs, and are designed to complement each other within Live.
Community and support
Where can I share Extensions or find examples to try?
The Ableton Discord server is the best place to share and find Extensions.
- Use the #extensions channel to discuss using Extensions in Live with fellow explorers.
- Use the #extensions-sdk channel to discuss using the SDK and building Extensions.
- Use the #extensions-gallery channel to share and discover extensions built by the community.
- For feedback on the SDK itself during the beta period, use Centercode.
The #start-here channel provides an overview of all available channels. If you don’t see specific channels, right-click on the Ableton server icon in the upper left and enable “Show All Channels” in the context menu.
How can I get support for issues I'm having using Extensions?
Since Extensions themselves are not created by Ableton, please contact the developer of the device if you have issues using it.
If you have issues using the SDK or building Extensions, please be sure to follow the documentation thoroughly and use the #extensions-sdk Discord channel for follow-up questions.