Task

Sign Webhook Payload

1 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.

HMAC data x402 REST usage

Compute a keyed HMAC of some data with a secret key — the standard way to sign and verify webhooks (Stripe, GitHub, etc.) and API requests. Data and key may each be utf8/hex/base64/base64url; the tag is returned as hex/b...

hash.openverbs.com Dev & Code 1 calls / 30d checked 2026-10-26

0.002 USDC per call per call

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