ReaScripts

ReaScripts is a feature of the digital audio workstation Reaper that enables automation and customization through scripts. ReaScripts provide a programmable interface to control almost every aspect of a project, allowing users to create repetitive tasks, custom workflows, and new tools without altering the core software.

Scripts can be written in Lua, EEL (a scripting language built for Reaper), or Python. Reaper ships with built-in support for Lua and EEL, while Python support requires a Python interpreter installed on the system. Scripts are stored in the Reaper resource path under the Scripts directory and can be run directly from the Actions list, assigned to keyboard shortcuts, or added to toolbars and menus. The Reaper API (referred to as the ReaScript API) exposes functions for working with projects, tracks, items, takes, MIDI, FX, and rendering.

Typical uses include batch-renaming items, programmatic routing, creating reports, applying consistent editing operations, generating MIDI parts, or batch exporting renders. Scripts can be shared and distributed via community repositories and package managers such as ReaPack, which makes it easier to install and update collections of scripts.

Because of platform differences and interpreter availability, some scripts may require setup steps, particularly for Python. ReaScripts can be tested and debugged within Reaper and provide a powerful way to extend functionality beyond the built-in actions.