Tool detail
Hashing, HMAC & Checksum Suite
Computes cryptographic hash digests of input data under chosen algorithms, and can HMAC-sign or verify a signature.
Categories: Utilities
Use when
- compute a SHA-256 or SHA-512 digest of text or binary data
- sign data with HMAC using a secret key
- verify an incoming webhook signature matches
Not for
- not for asymmetric/public-key signatures - HMAC and plain hashes only
Inputs
POST JSON body: { input: string, algorithms: array of md5|sha1|sha224|sha256|sha384|sha512|sha3_256|sha3_512|blake2b|blake2s|crc32|adler32 } (required); input_encoding, output_encoding, hmac (optional)
Inputs undocumented: array without items
Endpoint
- Method
POST- URL
https://hash-hmac.underscoredone.com/hash
Payment
- Protocol
- x402
- Listed price
- 0.01 USDC per call on Base
- Payment method
- exact
- Network
- eip155:8453
- Asset
- 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.
Source
- Directory
- Coinbase x402 Bazaar
- Record
- POST https://hash-hmac.underscoredone.com/hash
- Retrieved
- 2026-09-30T20:37:07.382Z
- Catalog file SHA-256
6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524- Catalog built
- 2026-09-30T22:31:58.034Z