Jack

Posted on Apr 21 • Originally published at anethoth.com

Webhook.site vs Building Your Own: When Free Tools Cost You More

#webdev #api #tutorial #productivity

If you've ever debugged a webhook integration, you've probably used webhook.site. It's free, it's instant, it works.

But here's what nobody tells you about free webhook debugging tools — and when you should build (or buy) something better.

The Webhook Debugging Problem

You're integrating Stripe webhooks. Or GitHub hooks. Or Shopify. The docs say "set your webhook URL to X" and you need somewhere to receive and inspect the payloads.

Most developers reach for webhook.site. Makes sense — it's free, no signup, instant URL.

Where Free Tools Break Down

1. URLs Expire

Webhook.site URLs are temporary. You set it up, configure Stripe to send events there, debug your handler... then the URL expires. Now your Stripe dashboard shows failed deliveries and you're reconfiguring everything.

2. No Team Access

You can't share a webhook inspector with your team. No API access. No way to integrate it into your CI pipeline.

3. No Replay

You received a webhook, found a bug in your handler, fixed the code... now you need the exact same payload again. With free tools, you're refreshing the Stripe dashboard hitting "resend."

4. No Forwarding

You want to see the payload AND forward it to your local development server. Free tools are inspection-only.

What Good Webhook Debugging Looks Like

Here's what I actually want when debugging webhooks:

# Create a persistent endpoint
curl -X POST https://webhookvault.anethoth.com/api/v1/endpoints \
  -H "X-API-Key: your_key" \
  -d '{"name": "stripe-dev", "description": "Stripe webhook testing"}'

# Point Stripe at it, then inspect captured requests
curl https://webhookvault.anethoth.com/api/v1/endpoints/{id}/requests \
  -H "X-API-Key: your_key"

# Replay a specific request to your local server
curl -X POST https://webhookvault.anethoth.com/api/v1/requests/{id}/replay \
  -H "X-API-Key: your_key" \
  -d '{"target_url": "http://localhost:8000/webhooks/stripe"}'

Persistent URLs. Full request inspection. Replay to any target. That's WebhookVault — I built it because I was tired of the webhook.site dance.

Quick, Free Alternative

If you just need to echo back a request to see what's being sent:

# Free, no signup, works right now
curl -X POST https://webhookvault.anethoth.com/api/v1/echo \
  -H "Content-Type: application/json" \
  -d '{"test": "payload"}'

Returns your exact request mirrored back as JSON — method, headers, body, IP.

When to Use What

Tool	Best For
webhook.site	Quick one-off inspection
ngrok	Forwarding to localhost
WebhookVault	Persistent capture + replay + API access
RequestBin	Simple capture (if you can find one that works)

The Real Cost of Free

I've wasted more time re-configuring expired webhook URLs than I'd spend in a year on a proper tool. The "free" tool cost me hours of context-switching and lost debug state.

Sometimes the free option is the expensive one.

What do you use for webhook debugging? Have you found a workflow that actually works well? I'm genuinely curious — drop your setup in the comments.

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