Before starting, make sure you have REAPER installed on your computer. Reagent works with any version of REAPER that supports Lua scripting.
1. Create Your Account
Create an account at reaperagent.com/signup before downloading the app.2. Download and Install Reagent
- Download Reagent from reaperagent.com/download
- Run the installer and follow the prompts
- Launch Reagent and sign in with your account
3. Install the SWS Extension
The SWS/S&M Extension is required for Reagent to access advanced REAPER features.1
Download SWS
Visit sws-extension.org and download the installer for your platform.
2
Run the Installer
Close REAPER if it’s running, then run the SWS installer.
3
Verify Installation
Open REAPER and look for “Extensions” in the menu bar. If you see SWS-related options, you’re set.
4. Complete the Onboarding
Launch Reagent and sign in with your account. The onboarding wizard will guide you through:- Installing the REAPER Bridge
- Connecting to REAPER
- Verifying everything works
How to automatically start the Bridge with REAPER
How to automatically start the Bridge with REAPER
By default, you need to run the
reagent_bridge action each time you open REAPER. To skip this step forever, set it as a global startup action using the SWS extension:1
Find the Bridge action
In REAPER, go to Actions > Show action list (or press 
?) and search for reagent_bridge.
2
Copy the command ID
Right-click the 
reagent_bridge action and select Copy selected action command ID.
3
Find SWS startup action
Run Set global startup action…

4
Paste and save
Paste the command ID and click OK. The Bridge will now start automatically whenever you open REAPER.

5. Send Your First Command
With the Bridge connected, you’re ready to use Reagent.- Type a message in the chat input, for example:
- Press Enter to send
- Reagent will query REAPER and display the results
- “Create 4 new tracks named Drums, Bass, Keys, and Vocals”
- “Rename all media item on this track to sfx_explo_01.. etc increment name”
- “Cut everything below 100Hz on this track”