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httpagent-toolscdpultravioletadaothirdweb

hash-hmac.underscoredone.com

Give this API any text or binary data and it returns its fingerprint under whichever hash algorithms you choose - SHA-256, SHA-512, MD5, BLAKE2, CRC32 and more. It also signs data with a secret key (HMAC) and safely verifies whether an incoming signature matches, using a timing-safe comparison. Language models cannot hash: they emit a string of the right length and character set that is simply wrong, so every webhook check built on a guessed hash is silently broken.

Resource URL

https://hash-hmac.underscoredone.com/hash

Payment options

exactBase (8453)

$0.01 USDC

Max amount

Pay to
0xE9740820225B3918b4ddd1292C7cA4Ca0e2C2F08
Timeout
300s
exactSolana

$0.01 USDC

Max amount

Pay to
8ugAWAXDB8V18kiUrGZTq1oMvU3C6Fxs8hfC6rvzQT3b
Timeout
300s

Tags

health:okSecuritysha256 hashhashhmachmac signatureverify hmac signature

For agents

Prompt snippet for AI agents

Find and pay for this x402 resource:
URL: https://hash-hmac.underscoredone.com/hash
Type: http
Sources: agent-tools, cdp, ultravioletadao, thirdweb

Developer