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HMAC-RIPEMD160 Hex Digest
x402
HMAC-RIPEMD160 Hex Digest is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-19).
Computes an HMAC-RIPEMD160 message authentication code for a given text using a caller-supplied key, returning the result as a lowercase hex string.
Price / call$0.002
Success—
StatusUnknown
How this service works
Call when an agent needs an HMAC-ripemd160 of text with a caller-supplied key, encoded as hex. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/hmac-ripemd160-hex first.
Output
A JSON response containing the HMAC-RIPEMD160 digest of the supplied text computed with the given key, returned as a lowercase hexadecimal string. No external network calls or LLM inference are involved — it is a pure cryptographic computation.
Example use cases
API request signature verification
“I need to sign this API request body 'amount=100¤cy=USD' with HMAC-RIPEMD160 using my secret key 'sk_prod_abc123' — give me the hex digest so I can include it as a signature header.”
Message integrity tagging pipeline
“For each outgoing message in my pipeline, compute an HMAC-RIPEMD160 hex tag using the key 'pipeline-secret-key' for the text 'order_id=9821 status=shipped' so I can attach it as a tamper-evident checksum.”
Blockchain-style keyed hash computation
“Can you generate the HMAC-RIPEMD160 hex digest of the string 'block:00042:prevhash:a1b2c3' with the signing key 'chainkey99'? I need it for a lightweight blockchain integrity check.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/hmac-ripemd160-hex?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you specifically need HMAC-RIPEMD160 (not SHA-256 or SHA-512 HMAC variants) as a keyed message authentication code, returned in hexadecimal. It is appropriate for legacy systems, cryptocurrency-adjacent workflows (RIPEMD160 is common in Bitcoin address derivation pipelines), or any protocol that mandates RIPEMD160 as the underlying hash. Prefer the free sandbox endpoint (/v1/sandbox/hmac-ripemd160-hex) for testing before committing to paid calls.
Side effects
- Missing or empty 'key' field returns a validation error
- Missing or empty 'text' field returns a validation error
- Text exceeding 100,000 characters rejected with a payload-too-large error
- Key exceeding 512 characters rejected with a validation error
- Payment failure or insufficient USDC balance results in 402 Payment Required
- Malformed JSON body returns a 400 Bad Request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| key | string | HMAC secret. Required on HMAC SKUs. Omit it for plain digests and checksums. The key is not stored. |
| text | string | Message to digest. For raw-hex SKUs this is hex bytes; for utf16 or latin1 SKUs it is decoded with that encoding. Otherwise it is UTF-8 text. |
Tags
x402
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