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BLAKE2b-512 Digest as Base64
x402
BLAKE2b-512 Digest as Base64 is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-01).
Computes a BLAKE2b-512 cryptographic hash of input text and returns it encoded as Base64, with optional HMAC keying.
Price / call$0.006
Success—
StatusUnknown
How this service works
Call when an agent needs a blake2b512 digest of text, encoded as base64. No network and no LLM. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2b512-base64 first.
Output
A JSON response containing the BLAKE2b-512 digest of the submitted text, encoded as a standard Base64 string. No network calls or LLM inference are involved; the result is deterministic and reproducible given the same inputs.
Example use cases
Integrity check for stored content
“Hash this document text using BLAKE2b-512 and give me the base64 digest so I can store it alongside the record to detect tampering later: 'User agreement v3.2 signed on 2024-01-15.'”
Keyed MAC for API message signing
“I need a keyed BLAKE2b-512 MAC for the message 'order_id=9821&amount=50.00¤cy=USD' using the key 'my-secret-key-abc123' — return it as base64.”
Deduplication fingerprint for text pipeline
“Compute a BLAKE2b-512 base64 fingerprint of this article snippet so I can check if I've seen it before: 'Scientists discover new species of deep-sea jellyfish off the coast of Japan.'”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/digest-blake2b512-base64?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a BLAKE2b-512 hash encoded specifically as standard Base64 (not hex, base32, or base64url). It is fully deterministic, requires no network access or LLM, and supports optional keyed HMAC-style digests. Prefer the free sandbox endpoint (/v1/sandbox/digest-blake2b512-base64) for testing; use this paid endpoint for production workloads requiring the stronger BLAKE2b-512 algorithm over MD5, RIPEMD-160, or BLAKE2s-256.
Side effects
- Empty or missing 'text' field returns a validation error
- Key exceeding 512 characters triggers a schema validation rejection
- Text exceeding 100,000 characters is rejected with an input size error
- Payment failure or insufficient USDC balance results in a 402 response
- Malformed JSON body returns a 400 Bad Request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| key | string | HMAC secret. Required on HMAC SKUs. Omit it for plain digests and checksums. The key is not stored. |
| text | string | Message to digest. For raw-hex SKUs this is hex bytes; for utf16 or latin1 SKUs it is decoded with that encoding. Otherwise it is UTF-8 text. |
Tags
x402
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Zero review prompt (fires after every successful call)
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