10 free tools
For developers
Try a webhook, a key or an API call without writing a script to do it first.
The tools
Free developer tools: verify a webhook signature, decode what a payload carried, generate a key, and call the ResellerHQ API from a browser with nothing installed.
Webhook signature verifier
Paste the three webhook headers, the raw body and the secret, and see whether the recomputed signature matches - and whether the timestamp is still inside the tolerance window.
In your browserWebhook replay window checker
Decode a webhook-timestamp header into its exact UTC time and tolerance window, and check whether a clock reading falls inside or outside it.
In your browserSigning secret generator
Make a whsec_ webhook signing secret shaped exactly like ours, with its .env line, for testing a local receiver before a real endpoint exists.
In your browserStandard Webhooks payload signer
Type an id, a timestamp and a raw body, give a whsec_ secret, and get the exact webhook-id, webhook-timestamp and webhook-signature headers for it.
In your browserWebhook payload example generator
Pick one of our documented events and get a sample payload, plus the signed headers a delivery of it would carry, ready to send to a local receiver.
In your browserIdempotency key generator
Make a UUID v4 for the Idempotency-Key header, with a ready curl line and our own retry rules explained next to it.
In your browserAPI request builder
Pick one of our documented operations and get a ready curl, Python or Node snippet, with the real base URL and an Idempotency-Key where the operation spends money.
In your browserPostman collection generator
Get a full Postman Collection v2.1 JSON for our API, with the real base URL and a bearer-auth placeholder already set - paste it straight into Postman.
In your browserAPI error code explainer
Type one of our documented error codes, a bare status, or paste a whole response body, and get the exact status, message, meaning and what to change in the request.
In your browserULID / request id decoder
Split one of our own prefixed ids, or a bare ULID, and read the exact UTC time it was minted - and say plainly when a prefix is not one of ours.
In your browser
More free tools
Every other family, and what it checks.
Email authentication
Check and build the SPF, DKIM and DMARC records that decide whether mail arrives.
22 toolsDNS
Read what a domain is really publishing, and build the records a provider asks for.
27 toolsDomains
See whether a name is free, who holds it, and what the registry says about it.
12 toolsDeliverability
Meet the rules the big mailbox providers set before they start rejecting your mail.
14 toolsMessaging
Work out what a text message really costs to send.
10 toolsPricing and billing
Work out what to charge, what it leaves you, and what a change mid-cycle costs.
17 tools
Start selling under your own brand
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