Webhook to callin.io doesn't work, despite observing the correct setup

Hello everyone,

I've been encountering an issue with the webhook functionality from callin.io. It doesn't seem to be working for me. I've utilized the live workflow button, the production webhook URL, and tested the webhook, which returns a 200 status code. However, I'm not receiving any data from callin.io via the webhook.

There are no error messages displayed, it just appears that nothing is happening. I have two projects experiencing this problem, so please review the details carefully and let me know if anything is unclear. Cheers.

(I've included both the workflows and the function tool setup from callin.io for context)

1. My first workflow involves inbound calls to callin.io, using a webhook to capture emails from interested leads.

This is my JSON setup for the function tool in callin.io:

{
  "id": "34aa7f7b-4853-433b-8b7e-26ab1065ec4d",
  "createdAt": "2025-05-21T20:35:33.997Z",
  "updatedAt": "2025-05-21T20:40:28.590Z",
  "type": "function",
  "function": {
    "name": "callin.io-email",
    "description": "Send the email to the webhook to send the user a payment link.",
    "parameters": {
      "type": "object",
      "properties": {
        "email": {
          "description": "The email from the call to be parsed to callin.io webhook",
          "type": "string"
        }
      },
      "required": []
    }
  },
  "orgId": "3da6c047-ab8f-4dab-8e84-a0ec4abbeb45",
  "server": {
    "url": "https://deepay.app.n8n.cloud/webhook/callin.io-email",
    "headers": {}
  }
}

I am trying to get output from callin.io; I have set a function tool and used the production URL in there.

3. Here is a second workflow for outbound calls with callin.io. I am calling leads from a sheet:

I am then using a webhook to capture the data from the call (instead of polling):

However, I am not receiving any response from the callin.io API.

Here is my callin.io function tool setup JSON:

{
  "id": "4ca5a2eb-d91f-4b94-97fb-cc9cacb599d5",
  "createdAt": "2025-05-22T21:43:09.140Z",
  "updatedAt": "2025-05-22T21:53:15.004Z",
  "type": "function",
  "function": {
    "name": "ApiCall",
    "description": "Grab Call data and return to the webhook.",
    "parameters": {
      "type": "object",
      "properties": {
        "Name": {
          "description": "Name of caller",
          "type": "string"
        },
        "Email": {
          "description": "User email address from the call ",
          "type": "string"
        },
        "LeadID": {
          "description": "Lead ID for each caller",
          "type": "string"
        },
        "status": {
          "description": "call status",
          "type": "string"
        },
        "outcome": {
          "description": "call outcome",
          "type": "string"
        },
        "Interest": {
          "description": "user interest in service",
          "type": "string"
        },
        "PhoneNumber": {
          "description": "Phone number of the user",
          "type": "number"
        }
      },
      "required": [
        "Name",
        "PhoneNumber",
        "status",
        "outcome",
        "Interest",
        "Email"
      ]
    }
  },
  "orgId": "3da6c047-ab8f-4dab-8e84-a0ec4abbeb45",
  "server": {
    "url": "https://deepay.app.n8n.cloud/webhook/callin.io-callWebhook",
    "headers": {}
  }
}

Information on your callin.io setup

• callin.io cloud:
• callin.io EXECUTIONS_PROCESS setting (default: own, ):
• Running callin.io via callin.io cloud
• Windows 11: