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24K Labs Hash Digest API
x402
24K Labs Hash Digest API 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 (or HMAC variant with a secret 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 a JSON object containing the hex-encoded digest, the base64-encoded digest, and the algorithm used, for the requested hash function (MD5, SHA-1, SHA-256, or SHA-512) optionally keyed with an HMAC secret.
Example use cases
API request signature generation
“I need to sign my API request payload — compute an HMAC-SHA256 of the string 'user_id=42&action=purchase' using my secret key 'mysecretkey123', and give me the hex output.”
Data integrity fingerprinting
“Hash the string 'v1.2.3-release-20240601' with SHA-512 so I can store the hex digest as an integrity fingerprint in my release manifest.”
Legacy MD5 checksum for compatibility
“Generate an MD5 hash of the string 'document_ref_7890' and return it in both hex and base64 — I need to match a legacy system that uses MD5 checksums.”
Technical details
Endpoint
POSThttps://api.24klabs.ai/api/v1/hash-digestWhen to prefer
Choose this endpoint when you need a quick, hosted hash or HMAC computation without running local crypto libraries — especially useful in agent pipelines, serverless environments, or when you need both hex and base64 output in one call. Prefer it over self-hosted solutions when you want pay-per-use pricing and no infrastructure setup. It covers MD5, SHA-1, SHA-256, and SHA-512 in one unified API.
Side effects
- Missing or empty input string returns a 400 validation error
- Unsupported algorithm name returns an error listing valid options
- Invalid or malformed HMAC key may return a 400 or processing error
- Very large input strings may be rejected or time out
- Incorrect Content-Type header causes request parsing failure
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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