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Webhook issue: LLM not receiving output from callin.io

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JanGoMak
(@jangomak)
Posts: 3
Active Member
Topic starter
 

What are you trying to achieve?

Hi there, I've been encountering this issue for a few days and require assistance.
I'm new to this and am starting to understand callin.io and Retell AI's inbound agent.

I've set up a Retell inbound agent that queries an Airtable base for properties. The results are filtered using parameters from the Retell call via a JSON Payload.

json
{
“additional_properties”: false,
“type”: “object”,
“properties”: {
“bedrooms”: {
“type”: “integer”,
“description”: “The number of bedrooms in the property.”
},
“location”: {
“type”: “string”,
“description”: “The location of the property.”
},
“price”: {
“type”: “number”,
“description”: “The price of the property.”
},
“status”: {
“type”: “string”,
“description”: “The status of the property.”
}
},
“required”: [
“location”,
“status”,
“price”,
“bedrooms”
]
}

Everything seems to be functioning correctly, and the output is as expected on callin.io.
However, the Retell LLM isn't receiving the output and therefore cannot provide the available property details.

What might I be doing wrong?
Any guidance would be greatly appreciated.

Warm regards,

Jan

Steps taken so far

I've connected callin.io and Retell AI via webhook, transmitting the JSON payload with requirements and filter values. I've configured the filter and Text aggregator, successfully retrieving all relevant information on callin.io.

Screenshots: scenario setup, module configuration, errors

 
Posted : 21/01/2025 5:05 am
arbi
 arbi
(@arbi)
Posts: 1
New Member
 

I've set up a webhook response, and I successfully received a response from the LLM.

 
Posted : 21/01/2025 6:47 am
JanGoMak
(@jangomak)
Posts: 3
Active Member
Topic starter
 

Hi,

Thank you for your response.

I have already set up a webhook response.

I thought I had included a screenshot of my flow in the initial post. Do you have any other suggestions or solutions?

Best regards,

Jan

 
Posted : 21/01/2025 8:44 am
DavidGurr_Make
(@davidgurr_make)
Posts: 38
Eminent Member
 

What are the field values in your Webhook Response module?

If I'm correct (I haven't verified this), it should be:

Status - 200

Body

{
    "result": "{8.text}}"
}

Custom headers

Key: content-type
Value: application/json

Please provide the field values you are seeing in your Webhook Response module.

 
Posted : 21/01/2025 9:09 am
Shah
 Shah
(@shah)
Posts: 1
New Member
 

Also, define in the prompt that this webhook result is equivalent to {{variable}} for AI to use in its response.

 
Posted : 22/01/2025 2:55 am
JanGoMak
(@jangomak)
Posts: 3
Active Member
Topic starter
 

Hi DavidGurr,

Thank you very much for your assistance - it seems to have resolved my issue. I somehow completely overlooked including the ‘result’.

I've updated my webhook, and it's now functioning perfectly.

Hi Shah,

Thanks for your feedback. I've also incorporated the variable into my prompt.

I can now refine a few more aspects, but at least I'm getting a result.

Warm regards,

Jan

 
Posted : 22/01/2025 3:13 am
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