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Send rich response from Python webhook to Dialogflow Messenger

In this post I will explain how to send rich responses from your webhook code to Dialogflow Messenger.

I will explain the steps for the Description rich response type, and you should be able to follow the same steps and do it for the other rich response types.

Let us start with the agent we used for the beginner tutorial.

First, let us look at the Custom Payload response for the intent called “show.description”

Now trigger this intent in the simulator using the appropriate training phrase.

Go to the History tab and open the Diagnostic Info for this intent.

Click on the ellipsis (three dots) next to the Agent

Click on Raw Interaction Log

This is what the Raw interaction log looks like. Copy the entire section within the fulfillmentMessages section.

Wrap it inside a JSON object and return it from your webhook code. In case the code below is not clear, read the Dialogflow Python Webhook tutorial first.

from flask import Flask

app = Flask(__name__)

def return_description():
  title = 'This is the title'
  line_1 = 'This is line 1'
  line_2 = 'This is line 2'
  return {
        "fulfillmentMessages": [{
            "payload": {
                "richContent": [[{
                    "text": [f'{line_1}', f'{line_2}']

@app.route('/')  # this is the home page route
def hello_world(
):  # this is the home page function that generates the page code
    return "Hello world!"

@app.route('/webhook', methods=['POST'])
def webhook():
  msg = return_description()
  return msg

if __name__ == '__main__':
            port=8080)  # This line is required to run Flask on repl.it
Notice that I have changed the verbiage slightly. This will help us distinguish between the response coming from the webhook versus response coming from the Custom Payload block. If the response from the Custom Payload block is shown in the next step, it means the webhook call failed. 

Now make sure that you Enable Webhook call on the show.description intent by clicking on the blue toggle switch

Go to the Integrations menu and select the Dialogflow Messenger integration

Click on Try it Now

In the Dialogflow Messenger chat widget, type the same training phrase to trigger the intent

You can see that the response is coming back from the webhook and is rendered correctly in the format of a Description rich response.

<— End of article —>

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"The magic key I needed as a non-programmer"

The custom payload generator was the magic key I needed (as a non-programmer) to build a good demo with rich responses in DialogFlow Messenger. I've only used it for 30 minutes and am thrilled. I've spent hours trying to figure out some of the intricacies of DialogFlow on my own. Over and over, I kept coming back to Aravind's tutorials available on-line. I trust the other functionalities I learn to use in the app will save me additional time and heartburn.

- Kathleen R
Cofounder, gathrHealth
"Much clearer than the official documentation to be honest"

Thanks a lot for the advice (of buying and following your videos)! They helped a lot indeed. Everything is very clear when you explain, much clearer than the official documentation to be honest 🙂

Neuraz T
Review for Learn Dialogflow CX
"I will strongly recommend this course because even I can learn how to design chatbot (no programming background)"

I think Aravind really did a great job to introduce dialogflow to people like me, without programming background. He organizes his course in very clear manner since I have been a college professor for 20 years. It is very easy for me to recognize how great Aravind’s course is! Very use-friend and very easy to follow. He doesn’t have any strong accent when he gives the lectures. It is so easy for me to understand. Really appreciate it.

Yes, I will strongly recommend this course because even I can learn how to design chatbot (no programming background) after studying Avarind’s course, you definitely can!

Ann Cai
Review for Learn Dialogflow ES

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