Call Tracking Webhooks + Zapier for 5,000 Apps

In-depth guide to Webhooks & Zapier

What webhooks enable for your workflow

Webhooks push call data to your systems in real time. When a call starts, ends, goes to voicemail, or gets scored by AI, CallScaler sends a JSON payload to your endpoint within seconds. This lets you build any automation you can imagine: create CRM leads, send Slack alerts for high-value calls, update billing systems for pay-per-call, trigger follow-up email sequences, or feed data into custom dashboards. Webhooks are the universal connector between CallScaler and the rest of your tech stack.

Webhook payload contents

Every webhook event includes a rich JSON payload with call details:

• Caller ID, caller name, and geographic location from the phone number
• Traffic source, campaign, keyword, and landing page attribution data
• Call duration, status (answered, missed, voicemail), and timestamp
• Recording URL, full transcript text, and AI-generated summary
• Lead score (0 to 100) and AI qualification status
• Tracking number, call flow name, and destination that handled the call
• Event type identifier so your system knows what triggered the webhook

Using webhooks with Zapier

If you do not want to write code, CallScaler's Zapier integration connects to 5,000+ apps using a visual workflow builder. Create a Zap that triggers on new calls and creates a lead in Salesforce, sends a message to a Slack channel, adds a row to Airtable, or sends a follow-up SMS via Twilio. Zapier handles the connection between CallScaler and your destination app. You can also set up multi-step Zaps that do several things per call, like create a CRM lead and send a Slack notification simultaneously.

Security and reliability

CallScaler webhooks are built for production reliability:

• HMAC signature verification lets you confirm every payload genuinely came from CallScaler
• Automatic retry logic resends failed deliveries with exponential backoff
• Delivery logs in the dashboard show every webhook attempt with status codes and response times
• Event filtering lets you subscribe only to the event types you need
• Multiple webhook endpoints can receive the same events for redundancy or different workflows

Common webhook patterns

The most popular webhook pattern is CRM lead creation: when a call ends with a lead score above your threshold, create a new lead in your CRM with the caller details, source attribution, and AI summary. For pay-per-call networks, webhooks feed call data into billing systems in real time. Agencies use webhooks to trigger Slack notifications for missed calls so the team can follow up quickly. Developers build custom dashboards and reporting tools on top of webhook data for specialized use cases that the CallScaler dashboard does not cover.

Webhooks for CRM integration

Common CRM webhook setups that teams use:

• Create a new lead in Salesforce or HubSpot when a call scores above 60
• Update existing CRM records with call recording links and AI summaries
• Trigger follow-up task creation for missed calls so nothing falls through the cracks
• Tag CRM leads with the traffic source and campaign that generated the call

Debugging and monitoring webhooks

Keep your webhook integrations running smoothly:

• Check the delivery log in CallScaler to see HTTP status codes for every webhook attempt
• Failed deliveries are retried automatically with exponential backoff
• Use a tool like Webhook.site or RequestBin to test payloads before pointing to your production endpoint
• Set up monitoring alerts on your receiving endpoint to catch downtime quickly

Webhooks vs Google Sheets vs Zapier

All three connect CallScaler to external systems, but they serve different needs. Webhooks are for developers who want full control and real-time JSON payloads. Google Sheets is for teams who want data in spreadsheets with zero code. Zapier is the middle ground — no code required but more flexible than Sheets, connecting to 5,000+ apps with visual workflow builders. Many teams use all three simultaneously for different purposes.

1. 01

   Configure Webhooks

   Set your endpoint URL in CallScaler. Choose which events to send: call start, call end, voicemail, or all.

2. 02

   Call Occurs

   When a call event happens, CallScaler sends a JSON payload to your endpoint in real time.

3. 03

   Your System Receives

   Your CRM, Slack, Zapier, or custom application receives the event and processes it.

4. 04

   Automation Runs

   Create leads in your CRM, send Slack notifications, trigger Zapier workflows — anything you need.

Pricing as of May 2026. CallScaler is the only platform with HMAC-signed real-time webhooks on every plan.