Automation

Webhook RelayTest and debug webhooks effortlessly

The Helix Webhook Relay API creates instant webhook endpoints for testing, debugging, and forwarding. Inspect every request in real-time, replay them, forward to your local dev environment, or set up custom routing rules — no ngrok needed.

Free tier with 100 requests/month
Fast, cached responses
99.9% uptime target
Standard REST + JSON

Get API Key (Free) →

Interactive Demo

Webhook Relay

What is the Webhook Relay API?

How it works

1POST /create returns a fresh webhook URL (https://hooks.helix-api.com/{id}).
2Send any request to that URL — it's captured forever in the inbox.
3GET /inbox/{id} lists all received requests with headers, body, method, query, timestamp.
4POST /forward/{id} sets a destination URL — incoming requests are forwarded in real-time.
5Replay any past request to your forwarding URL with /replay/{id}/{request_id}.

Endpoints

3 REST endpoints, all returning consistent JSON.

POST

/create

Create a webhook endpoint

GET

/inbox/{id}

Get received webhooks

POST

/forward/{id}

Set forwarding URL

Code in 5 languages

Copy and paste into your project. Replace YOUR_API_KEY with your RapidAPI key.

// Webhook Relay API
const response = await fetch(
  "https://webhook-relay-by-helix-api.p.rapidapi.com/create",
  {
    method: "POST",
    headers: {
      "X-RapidAPI-Key": "YOUR_API_KEY",
      "X-RapidAPI-Host": "webhook-relay-by-helix-api.p.rapidapi.com",
      "Content-Type": "application/json"
    },
    body: JSON.stringify({ "query": "your input" })
  }
);

const data = await response.json();
console.log(data);

What developers build with this API

Real use cases from production deployments.

Local Development Testing

Stripe/GitHub/Twilio webhooks delivering to your laptop? Set up a webhook relay → forward to localhost. Cleaner than ngrok, multi-user friendly.

Integration Debugging

Customer says 'your webhook isn't reaching us.' Point it at our endpoint, see exactly what you sent. Reproduce or fix in minutes.

CI/CD Pipelines

Receive build status callbacks in CI workflows. Inspect what GitHub Actions / CircleCI / Jenkins sends.

API Sandboxing

Test third-party integrations without polluting your production webhook handler. Receive in our inbox, inspect, then graduate to prod.

Endpoint Monitoring

Get notified when webhooks stop arriving. Set up rules: 'alert me if no requests in 24 hours.'

Pricing

All tiers include this API. No credit card for free tier.

BASIC

Free

✓ 100 reqs/month
✓ Hard limit
✓ All endpoints

PRO

$9.99/mo

✓ 10,000/month
✓ +$0.005 each
✓ All endpoints

ULTRA

$29.99/mo

✓ 100,000/month
✓ +$0.002 each
✓ All endpoints

MEGA

$99.99/mo

✓ 1,000,000/month
✓ +$0.001 each
✓ All endpoints

View all 20 APIs included →

Frequently asked questions

Real answers to questions developers ask before integrating.

How long are requests retained?

Free tier: 24 hours. Pro: 30 days. Ultra+: 90 days.

Can I share a webhook URL with my team?

Yes — anyone with the URL can send to it and read the inbox. Add basic auth for private inboxes.

Does it support all HTTP methods?

Yes — GET, POST, PUT, PATCH, DELETE, OPTIONS. We capture everything: method, headers, query, body.

Can I replay a request?

Yes — POST /replay/{inbox_id}/{request_id} resends that exact request to your configured forwarding URL.

Is it secure?

Webhook URLs are random UUIDs (cryptographically secure). For sensitive data, add basic auth or IP allowlisting in inbox settings.

How is this different from webhook.site or ngrok?

webhook.site is great for one-off inspection. ngrok is for local tunneling. Our API combines both, with programmatic access, replay, and forwarding rules.