Guides

Practical, copy-pasteable walkthroughs for common webhook debugging jobs.

How to test webhooks online (free, no signup)

Get a free URL that captures any webhook or HTTP request so you can inspect headers and body live — no signup, no install.

Receive webhooks on localhost — without ngrok or a tunnel

Deliver GitHub, Stripe or any webhooks to a server on your laptop with one shell script — no tunnel daemon, no ngrok account, no firewall changes.

Test GitHub webhooks and verify X-Hub-Signature-256

Capture GitHub webhook deliveries, inspect the payload, and verify the X-Hub-Signature-256 HMAC signature — free.

Inspect Stripe webhooks without the Stripe CLI

Capture Stripe webhook events at a free URL, inspect the exact payload and Stripe-Signature header, and verify the signature.

Pass Slack URL verification (url_verification challenge) instantly

Slack's Events API requires your endpoint to echo a challenge. Do it with zero code using response templates — and capture every event.

Test Shopify webhooks and verify X-Shopify-Hmac-Sha256

Capture Shopify webhook deliveries at a free URL, inspect the exact payload, and verify the base64 X-Shopify-Hmac-Sha256 HMAC signature.

Debug Twilio webhooks: see exactly what Twilio sends

Capture Twilio SMS/voice webhooks at a free URL, see the form-encoded parameters decoded, and test your TwiML responses.

Free ngrok alternatives for webhook testing (2026)

Honest comparison of free ways to get webhooks to localhost — cloudflared, localtunnel, SSH tunnels, and a no-tunnel relay approach — with the trade-offs of each.

Test webhook retries, timeouts and failure handling

Force any webhook sender to retry: return 500s, add response delays to trip timeouts, and observe the real retry schedule — without deploying anything.

RequestBin alternatives in 2026 (the original is gone)

requestbin.com shut down years ago. Here are the working free alternatives for inspecting HTTP requests and webhooks — and what each one paywalls.

webhook.site alternatives in 2026 (free, without the 100-request cap)

webhook.site is fine for a two-minute look, but the free tier caps requests and paywalls replay, custom URLs, and the CLI. Honest rundown of the alternatives.

Beeceptor alternatives: free webhook inspection without the 50/day cap

Beeceptor’s free tier caps you at ~50 requests per endpoint per day with short history. If you’re inspecting webhooks rather than mocking APIs, here are better free options.

Mockbin alternatives: mockbin.org is gone — free replacements that work

mockbin.org no longer resolves; Kong folded Mockbin into Insomnia. Free working alternatives for inspecting HTTP requests and mocking webhook responses.

Hookbin alternatives: hookbin.com is gone — here’s what to use instead

hookbin.com now redirects to Pipedream’s RequestBin; the standalone request-capture tool is gone. Free working alternatives for inspecting HTTP requests and webhooks.