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agentshelf.syntexa.ch SHAKE-128 Base64 Digest
x402
agentshelf.syntexa.ch SHAKE-128 Base64 Digest is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-01).
Computes a SHAKE-128 (XOF) cryptographic digest of input text and returns the result encoded as base64.
Price / call$0.002
Success—
StatusUnknown
How this service works
Call when an agent needs a shake128 digest of text, encoded as base64. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-shake128-base64 first.
Output
Returns a base64-encoded SHAKE-128 (extendable output function) digest of the provided input text. The response is a deterministic hash string with no network calls or AI inference involved.
Example use cases
Data integrity fingerprinting
“Hash this JSON payload 'user_id=42&action=login×tamp=1710000000' with SHAKE-128 and return the base64 digest so I can use it as a fingerprint for tamper detection.”
Unique key generation from content
“Take the string 'product-catalog-section-3-variant-blue' and compute its SHAKE-128 base64 digest — I want to use it as a short unique identifier in my database.”
Verifying document content hash
“Compute the SHAKE-128 base64 hash of this contract text: 'This agreement is entered into on January 1, 2025 between Party A and Party B...' so I can compare it against the expected checksum.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/digest-shake128-base64?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a SHAKE-128 (XOF) hash specifically encoded as base64 and want a simple, deterministic, low-latency computation with no external dependencies. Prefer the free sandbox endpoint (/v1/sandbox/digest-shake128-base64) for testing. Use this paid endpoint for production use when you need guaranteed availability and can pay $0.002 USDC per call. If you need a different hash algorithm (SHA-224, SHA-3, SHA-512) or encoding (hex, base32, base64url), consider the sibling endpoints on the same host.
Side effects
- Text or key field missing or empty (minLength:1 constraint violated — returns 4xx validation error)
- Text exceeds 100,000 character limit — returns 4xx error
- Payment of exactly $0.002 USDC not provided — returns 402 Payment Required
- Malformed JSON body — returns 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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