Can I test Twilio webhooks without sending real SMS messages?

Yes. Trigger one real test event so HookSense captures the payload, then use replay to send it back to your handler as many times as you need. You get full SMS or voice payload inspection without burning Twilio credits.

How does HookSense handle Twilio's application/x-www-form-urlencoded payloads?

HookSense captures form-encoded bodies and lets you inspect each field, unlike JSON-only tools. You can also replay or export the request as cURL to reproduce the exact shape your handler receives.

Does HookSense verify Twilio's X-Twilio-Signature header?

Yes. Twilio uses HMAC-SHA1 over the full URL plus form parameters. Add your Auth Token to HookSense and signature verification runs automatically on every incoming request.

Twilio Webhook Tester

Test Twilio webhooks in real-time — no signup, no tunnels.

Get a free webhook URL in one click, paste it into your Twilio dashboard, and watch events stream in live. Verify X-Twilio-Signature signatures automatically, replay any request to your local server, and debug payloads with search and filters.

Get a free Twilio webhook URL Full Twilio setup guide

Why test Twilio webhooks with HookSense

Real-time WebSocket stream

Events appear the instant Twilio sends them. No polling, no refresh button.

HMAC-SHA1 verification

Paste your signing secret once — HookSense verifies every Twilio request automatically.

One-click replay

Send any captured webhook back to your local server or production — rerun your handler without triggering new events.

CLI forwarding, no ngrok

Forward directly to localhost:3000 with npx hooksense listen.

Quick start — 3 steps

1
Get your free webhook URL
Create a free endpoint at hooksense.com. You get a unique URL instantly — no credit card, no config.
2
Paste it into Twilio
In the Twilio dashboard, add the URL as your webhook endpoint and pick the events you want (SMS status callback, Voice status callback, etc.).
3
Trigger an event and watch it arrive
Fire a test event from Twilio — it lands in HookSense within milliseconds. Inspect headers, body, and signature. Replay when ready.

Forward to localhost

npx hooksense listen -p 3000 --path /api/integrations/twilio

Common Twilio webhook events

SMS status callback

Voice status callback

Incoming SMS

Incoming voice call

Recording completed

Transcription completed

Message delivery status

Conversation events

Testing tips specific to Twilio

Twilio sends webhooks as application/x-www-form-urlencoded, not JSON
Twilio's signature validation includes the full URL — make sure it matches exactly
Use HookSense replay to re-test your handler without sending another SMS
Set custom responses in HookSense to return TwiML during testing

Frequently asked

Can I test Twilio webhooks without sending real SMS messages?: Yes. Trigger one real test event so HookSense captures the payload, then use replay to send it back to your handler as many times as you need. You get full SMS or voice payload inspection without burning Twilio credits.
How does HookSense handle Twilio's application/x-www-form-urlencoded payloads?: HookSense captures form-encoded bodies and lets you inspect each field, unlike JSON-only tools. You can also replay or export the request as cURL to reproduce the exact shape your handler receives.
Does HookSense verify Twilio's X-Twilio-Signature header?: Yes. Twilio uses HMAC-SHA1 over the full URL plus form parameters. Add your Auth Token to HookSense and signature verification runs automatically on every incoming request.

Test webhooks from other providers

Start testing Twilio webhooks now

Free plan includes 100 requests/day, 7-day retention, real-time streaming. No credit card.

Create a free endpoint