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Hash Digest API (MD5/SHA/HMAC)
x402
Hash Digest API (MD5/SHA/HMAC) is a paid API for AI agents from api.24klabs.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Computes MD5, SHA-1, SHA-256, or SHA-512 hash (plain or HMAC with a key) of a string, returning both hex and base64 encodings.
Price / call$0.001
Success—
StatusUnknown
How this service works
Compute md5/sha1/sha256/sha512 (or HMAC with a key) of a string; hex + base64 output.
Output
Returns the computed hash digest in both hexadecimal and base64 encodings, along with the algorithm name used (md5, sha1, sha256, or sha512). For HMAC requests, the result reflects keyed hashing with the provided secret.
Example use cases
API request signature generation
“I need to sign my API request body — compute the HMAC-SHA256 of 'user_id=42&amount=100' using the secret key 'abc123secret' and give me both hex and base64 outputs.”
Data integrity checksum
“Generate a SHA-512 hash of the string 'The quick brown fox jumps over the lazy dog' so I can use it as a checksum to verify data integrity later.”
Legacy MD5 fingerprinting
“Compute the MD5 digest of 'hello@example.com' in both hex and base64 — I need it for a Gravatar-style profile image lookup.”
Technical details
Endpoint
POSThttps://api.24klabs.ai/api/hash-digestWhen to prefer
Use this endpoint when an AI agent needs a quick, reliable hash or HMAC computation without setting up a local crypto library — especially useful in serverless or sandboxed agent environments where native crypto modules are unavailable. Ideal for generating API signatures, checksums, or fingerprints on the fly. Prefer this over general-purpose code execution endpoints when the sole requirement is hashing.
Side effects
- Unsupported algorithm name returns a validation error
- Missing input string returns a 400 bad request
- Invalid or missing HMAC key when HMAC mode is requested
- Very large input strings may be truncated or rejected
- Payment failure via x402 protocol blocks the request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| algo | string | |
| text | string |
Output
Schema · Response
{
"type": "json",
"example": {
"hex": "b94d27b9...",
"algo": "sha256"
}
}Tags
x402
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