provide an openapi specification

README.md

@@ -23,7 +23,7 @@ cd backend
 ./mvnw spring-boot:run
 ```
 
-The backend is accessible under port 8080. e. g. http://localhost:8080/events
+The backend is accessible under port 8080. e. g. http://localhost:8080/events. You can view an OpenApi specification under http://localhost:8080/swagger-ui/index.html
 
 ## Build and run the frontend
 

backend/pom.xml

@@ -27,6 +27,12 @@
 			<artifactId>spring-boot-starter-test</artifactId>
 			<scope>test</scope>
 		</dependency>
+
+		<dependency>
+			<groupId>org.springdoc</groupId>
+			<artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>
+			<version>2.3.0</version>
+		</dependency>
 	</dependencies>
 
 	<build>