Create or compare an HMAC using SHA-256, SHA-384, or SHA-512
Create or compare an HMAC using SHA-256, SHA-384, or SHA-512.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
30 msmedian answer time
$0.001listed price per call
$0.001price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.agent-payload-tools.workers.dev/hmac
| Category | Everything else |
|---|---|
| Provider host | api.agent-payload-tools.workers.dev |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.001 | 30 ms |
Example input (from the provider)
{
"body": {
"algorithm": "SHA-256",
"input": "message",
"secret": "shared-secret"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"$schema": "http://json-schema.org/draft-07/schema#",
"properties": {
"algorithm": {
"description": "Digest algorithm. Defaults to SHA-256.",
"enum": [
"SHA-256",
"SHA-384",
"SHA-512"
],
"type": "string"
},
"expected_hex": {
"description": "Optional hexadecimal digest to compare in constant time.",
"pattern": "^[0-9a-fA-F]*$",
"type": "string"
},
"input": {
"default": "",
"description": "UTF-8 message to authenticate.",
"type": "string"
},
"secret": {
"description": "HMAC secret for this call. It is not stored.",
"minLength": 1,
"type": "string"
}
},
"required": [
"secret"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}