Webhooks

POST /webhooks/diaform HTTP/1.1
Content-Type: application/json
X-Webhook-Event: conversation.completed
X-Webhook-Signature: 4fa4d553f8abf7a199e5d51ee2401320af843de438e63a2ed6bc33f4f943d906

{
  "conversation_id": "0f8d43a2-6df9-49c8-bf5d-fd2b6ec2d9ee",
  "agent_id": "b8acb3ab-1f3d-4a7e-a846-b7f493f86b6d",
  "organization_id": "4d6ecdb4-8543-4adf-ae65-1f24106d5474",
  "status": "completed",
  "respondent": {
    "email": "alex@acme.com",
    "metadata": {},
    "identities": [
      { "type": "email", "value": "alex@acme.com", "source": "owner" },
      { "type": "identifier", "value": "customer-123", "source": "owner" },
      { "type": "name", "value": "Alex Morgan", "source": "ai" }
    ],
    "invite_id": "3a4f49c7-b8f4-4c44-8f74-fd8e4277c3e4"
  },
  "summary": {
    "respondent_email": null,
    "respondent_identities": [
      { "type": "email", "value": "alex@acme.com" },
      { "type": "identifier", "value": "customer-123" },
      { "type": "name", "value": "Alex Morgan" }
    ],
    "answers": [
      {
        "question_id": "V1StGXR8_Z5jdHi6B-myT",
        "question_text": "How did your first week with the product go?",
        "summary": "Setup was quick, but Alex struggled to invite teammates.",
        "sentiment": "mixed",
        "confidence": "high",
        "quotes": ["I had everything running in ten minutes."]
      }
    ],
    "overall_sentiment": "mixed",
    "urgent_issues": ["Teammate invites fail for Google Workspace accounts."],
    "additional_insights": "Alex would pay more for an API."
  },
  "completed_at": "2026-05-07T12:15:41.123Z"
}

const crypto = require("node:crypto");
const express = require("express");

const app = express();
const secret = process.env.DIAFORM_WEBHOOK_SECRET;

function isValidSignature(rawBody, signature) {
  if (!Buffer.isBuffer(rawBody) || typeof signature !== "string") {
    return false;
  }

  const expected = Buffer.from(
    crypto.createHmac("sha256", secret).update(rawBody).digest("hex")
  );
  const received = Buffer.from(signature);

  return (
    received.length === expected.length &&
    crypto.timingSafeEqual(received, expected)
  );
}

app.post(
  "/webhooks/diaform",
  express.raw({ type: "application/json" }),
  (req, res) => {
    if (!isValidSignature(req.body, req.get("X-Webhook-Signature"))) {
      return res.status(401).send("Invalid signature");
    }

    const event = JSON.parse(req.body.toString("utf8"));
    res.sendStatus(200);

    // Respond first, then do the slow work.
    console.log(event.conversation_id, event.status);
  }
);

app.listen(3000);

import hashlib
import hmac
import json
import os

from flask import Flask, request

app = Flask(__name__)
SECRET = os.environ["DIAFORM_WEBHOOK_SECRET"].encode("utf-8")


def is_valid_signature(raw_body, signature):
    if not signature:
        return False
    expected = hmac.new(SECRET, raw_body, hashlib.sha256).hexdigest()
    return hmac.compare_digest(expected.encode("utf-8"), signature.encode("utf-8"))


@app.post("/webhooks/diaform")
def diaform_webhook():
    raw_body = request.get_data()
    if not is_valid_signature(raw_body, request.headers.get("X-Webhook-Signature")):
        return "Invalid signature", 401

    event = json.loads(raw_body)
    print(event["conversation_id"], event["status"])
    return "", 200