LocalStack Extensions

LocalStack Extensions allow developers to extend and customize LocalStack. Extensions are a feature of our paid offering. LocalStack Extensions enable you to start custom services with LocalStack in the same container, while leveraging the existing features in the ecosystem.

Developers can add new services, extend existing services, and even add custom functionality. The Extensions API allows developers to easily plug in their own custom logic and services into the LocalStack container.

You can use LocalStack Extensions to:

• Starting custom services together with LocalStack in the same container (see our Cloudflare Workers Extension).
• Instrumenting AWS requests with additional information before they reach your Lambdas.
• Logging AWS API calls to custom data backends.

The officially supported LocalStack Extensions can be discovered on our Extension Library. To install and use extensions, you need an active LocalStack license.