Create a flow with a single prompt

The following image shows a flow consisting of a single prompt, defined inline in the node. The prompt generates a playlist of songs from a JSON object input that includes the genre and the number of songs to include in the playlist.

To build and test this flow in the console

1. Create a flow by following the instructions at Create your first flow in Amazon Bedrock.

2. Set up the prompt node by doing the following:

   1. Select the Prompt node in the center pane.

   2. Select the Configure tab in the Flow builder pane.

   3. Enter MakePlaylist as the Node name.

   4. Choose Define in node.

   5. Set up the following configurations for the prompt:

      1. Under Select model, select a model to run inference on the prompt.

      2. In the Message text box, enter Make me a {{genre}} playlist consisting of the following number of songs: {{number}}.. This creates two variables that will appear as inputs into the node.

      3. (Optional) Modify the Inference configurations.

      4. (Optional) If supported by the model, you can configure prompt Caching for the prompt message. For more information, see Create and design a flow in Amazon Bedrock.

   6. Expand the Inputs section. The names for the inputs are prefilled by the variables in the prompt message. Configure the inputs as follows:

      Name	Type	Expression
      genre	String	$.data.genre
      number	Number	$.data.number

      This configuration means that the prompt node expects a JSON object containing a field called genre that will be mapped to the genre input and a field called number that will be mapped to the number input.

   7. You can't modify the Output. It will be the response from the model, returned as a string.

3. Choose the Flow input node and select the Configure tab. Select Object as the Type. This means that flow invocation will expect to receive a JSON object.

4. Connect your nodes to complete the flow by doing the following:

   1. Drag a connection from the output node of the Flow input node to the genre input in the MakePlaylist prompt node.

   2. Drag a connection from the output node of the Flow input node to the number input in the MakePlaylist prompt node.

   3. Drag a connection from the output node of the modelCompletion output in the MakePlaylist prompt node to the document input in the Flow output node.

5. Choose Save to save your flow. Your flow should now be prepared for testing.

6. Test your flow by entering the following JSON object is the Test flow pane on the right. Choose Run and the flow should return a model response.

   {
       "genre": "pop",
       "number": 3
   }