Use one shared User Action endpoint with the published ActionType that matches the interaction. Start with the guide, then use the common contract and Explorer.
Build your first User Action request: choose an ActionType, obtain the required keys, submit signals, and interpret the response.
Submit identity and activity signals through one endpoint, then use the returned scores and configured results in your application.
Choose the ActionType that matches your interaction, then follow its guide for signals, request examples, and implementation details.
Look up a provisioned ActionKey, explore its inputs, and build and send a test request to inspect the API response.