RequestBin alternatives that still work

If you just landed here from an old blog post or Stack Overflow answer telling you to "create a RequestBin": the original requestb.in shut down in 2018 (public bins were abused, and the maintainers pulled the plug). The name lives on in a few places, which causes confusion. Here's the current landscape, honestly.

What happened to RequestBin

• requestb.in (the original) — dead. The open-source code still exists on GitHub and you can self-host it, but it's unmaintained (Python 2 era).
• requestbin.com (Pipedream) — the domain now redirects to Pipedream, a full workflow-automation platform. You get request inspection, but only by signing up for and learning the whole platform; it's an on-ramp to their paid product, not a bin.
• Kong's RequestBin fork — self-host only, archived.

What you actually wanted

A URL you can point anything at — a webhook provider, an sdk, a curl command, a suspicious IoT device — and then look at exactly what was sent: method, headers, query, body. Ideally without creating an account first. Your current options:

1. webhook.site

Good: mature, well known, instant URL with no signup.
Trade-offs: the free tier is tight — around 100 requests per bin, short expiry, and most of the useful features (custom URLs, forwarding/replay to your own endpoint, longer retention, CLI) are behind a paid plan. Fine for a two-minute look, frustrating for a real debugging session.

2. Self-hosting (RequestBin fork, or roll your own)

Good: full control, data never leaves your infra — the right call for regulated environments.
Trade-offs: you now maintain a service in order to debug a service. For "I need to see this payload in the next 90 seconds", it's the slow path.

3. CatchHook (this site)

CatchHook is a free request bin built to be what requestb.in was, plus the things you'd inevitably hit the paywall for elsewhere:

$ curl https://catchhook.catchhook.workers.dev/new        # instant bin, no signup — or click the button below

• 1,000 requests per bin, 30-day retention with a free account (anonymous bins: 24 h).
• Inspect everything — headers, query, form fields decoded, JSON pretty-printed, binary bodies byte-exact with a hex view.
• Replay any capture to your real endpoint, or copy it as curl / fetch / Python / HTTPie.
• Control the response — status, headers, body, artificial delay — to test the sender's error and retry handling.
• HMAC signature badges (GitHub, Stripe, Shopify, generic) so you can check signatures before writing verification code.
• Custom URLs free (/h/my-stripe-dev), CLI with live tail and a relay-to-localhost mode, JSON/HAR export, shareable read-only permalinks per capture.

Trade-offs, honestly: the live view is polling-based (captures appear within a couple of seconds, not instantly-streamed), and it's hosted-only — if your payloads can't leave your network, self-host a fork instead.

Quick chooser

• Payloads must stay in-house → self-host the old RequestBin fork.
• You're already deep in Pipedream → their built-in inspector is fine.
• Everything else → a dedicated free bin; that's what CatchHook is for.

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