Configuring Allowed Domains (CORS)
If you are building a browser-based application (such as a React, Vue, or Angular app) that interacts directly with the MultiSet Public API, you must configure Cross-Origin Resource Sharing (CORS).
For security reasons, browsers restrict cross-origin HTTP requests initiated from scripts. By adding your application's domain to the MultiSet whitelist, you instruct our servers to accept API requests coming from your specific web application.
How to Add a Domain
Navigate to the Credentials -> Settings tab on the left sidebar.
Locate the Domains section.
Click the purple Add + button on the right side of the card.
Enter the full origin of your application. This includes the protocol and the port (if applicable).
Recommended Setup
We recommend adding entries for both your local development environment and your production environment.
1. Local Development
To test the API while developing on your local machine, add your localhost address.
Protocol: http
Domain: localhost:3000 (or whichever port your local server uses)
2. Production
Once your application is deployed, add your live domain.
Protocol: https
Domain: www.your-application.com
Note: Do not include trailing slashes (e.g., use localhost:3000, not localhost:3000/).
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