diff --git a/README.md b/README.md
index 4d4f615..49752d5 100644
--- a/README.md
+++ b/README.md
@@ -68,6 +68,16 @@ Unit tests can be executed with
 bundle exec rspec
 ```
 
+## API documentation
+
+Generate the OpenAPI documentation with the command:
+
+```
+rake rswag:specs:swaggerize
+```
+
+The documentation is available in Swagger UI in http://libre-wedding-planner.app.localhost/api/api-docs/index.html. If testing the API through the UI, you will need to select the second server (which includes the `/api` path), intended for development.
+
 ## Contributing
 
 Contributions of all kinds (code, UX/UI, testing, translations, etc.) are welcome. The procedures to contribute are still being defined, but don't hesitate to reach out in case you want to participate.