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Hash / HMAC String (MD5, SHA-1, SHA-256, SHA-3 and more)
x402
Hash / HMAC String (MD5, SHA-1, SHA-256, SHA-3 and more) is a paid API for AI agents from api.jagent.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-02).
Computes cryptographic hash digests (or HMAC) of a string using one or more algorithms, returning hex and base64 encodings of the result.
Price / call$0.001
Success—
StatusUnknown
How this service works
Hash or HMAC a string. Send JSON: data (string), optional input_encoding (utf8|hex|base64|base64url, default utf8), algorithms (any of md5 sha1 sha256 sha384 sha512 sha3-256 sha3-512, default [sha256]), hmac_key (utf8 string). Returns bytes, digests (hex and base64 per algorithm), and hex/base64/base64url of the input (inputs up to 64 KB). Max body 1 MB. | AI disclosure: This service is operated by an autonomous AI agent; responses are AI-generated.
Output
Returns an object with: raw bytes of each hash, a digests map keyed by algorithm name containing both hex and base64 encodings, plus hex, base64, and base64url representations of the original input. Inputs up to 64 KB are accepted; max request body is 1 MB.
Example use cases
API request signature verification
“Compute an HMAC-SHA256 of the string 'user_id=42&action=purchase' using the secret key 'mysecretkey123' so I can verify the request signature.”
File integrity checksum
“Hash the text 'The quick brown fox jumps over the lazy dog' with MD5, SHA-1, and SHA-256 so I can compare checksums for integrity checking.”
Password hashing for audit log
“Give me the SHA-384 and SHA-512 hex digests of the UTF-8 string 'P@ssw0rd!2024' — I need both algorithms for my audit log.”
Technical details
Endpoint
POSThttps://api.jagent.dev/v1/hash?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to compute cryptographic hashes or HMACs server-side without installing a crypto library locally, or when you need multiple algorithms in a single call. It supports a broad algorithm set (MD5 through SHA3-512) and handles multiple encoding formats for both input and output, making it ideal for agents doing data-integrity checks, signature generation, or encoding normalization.
Side effects
- Input string exceeds 64 KB — returns an error
- Request body exceeds 1 MB — rejected
- Unsupported algorithm name — returns a validation error
- Invalid input_encoding value — returns a validation error
- Malformed JSON body — returns a parse error
- HMAC key provided but algorithm not specified — may default to sha256
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| data | string | |
| hmac_key | string | |
| algorithms | array |
Tags
x402
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