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AgentBIT HMAC Hash Generator
x402
AgentBIT HMAC Hash Generator is a paid API for AI agents from agentbit.app, paid per call via x402, $0.0015/call, status unknown (last checked 2026-10-30).
Computes an HMAC (Hash-based Message Authentication Code) for a given input string using a secret key and a specified algorithm (e.g. SHA-256).
Price / call$0.0015
Success—
StatusUnknown
How this service works
Compute an HMAC signature (hex) of an input string with a secret key. Supports sha256, sha512 and other algorithms — for webhook signing and message authentication.
Output
Returns a JSON object containing the HMAC digest of the input string, computed using the specified algorithm (e.g. SHA-256, SHA-512) and the provided secret key, typically as a hex-encoded or base64-encoded string.
Example use cases
Webhook signature generation
“I need to sign this webhook payload 'user_id=42&event=purchase' with HMAC-SHA256 using the secret key 'webhook-secret-abc' so the receiving server can verify it came from me.”
API request authentication
“Generate an HMAC-SHA512 signature for the string 'GET /api/orders 1697000000' using the secret key 'api-signing-key-xyz' — I need to attach it as an auth header to my API call.”
Message integrity verification prep
“Compute an HMAC-SHA256 for the text 'transaction:transfer:$500' using key 'integrity-key-001' so I can compare it against the hash the bank sent me to confirm the message wasn't tampered with.”
Technical details
Endpoint
POSThttps://agentbit.app/v1/hash/hmac?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a pay-per-call, no-signup HMAC computation without managing your own cryptographic library or server — ideal for lightweight agent workflows that occasionally need to sign or verify messages without persistent API key management.
Side effects
- Missing required field (key, input, or algorithm) returns a 400 error
- Unsupported algorithm name returns an error indicating valid options
- Empty key or input string may return an error or produce an unexpected result
- Payment failure via x402 protocol prevents the call from being processed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| key | string | |
| input | string | |
| algorithm | string |
Output
Schema · Response
{
"type": "json",
"example": {}
}Tags
x402
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