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BLAKE2s-256 Digest as Base64URL
x402
BLAKE2s-256 Digest as Base64URL is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Computes a BLAKE2s-256 cryptographic hash of input text and returns it encoded as base64url, with no network calls or LLM involved.
Price / call$0.001
Success—
StatusUnknown
How this service works
Call when an agent needs a blake2s256 digest of text, encoded as base64url. No network and no LLM. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2s256-base64url first.
Output
Returns a BLAKE2s-256 cryptographic digest of the input text, encoded as a base64url string. If a key is provided, a keyed variant of the hash is produced. The result is deterministic and compact, suitable for checksums, deduplication, and integrity verification.
Example use cases
Integrity fingerprint for log entries
“I need a base64url-encoded BLAKE2s-256 hash of this log line to use as a tamper-evident fingerprint: 'ERROR 2024-06-01T12:00:00Z server crashed unexpectedly'”
Keyed HMAC-style digest for API tokens
“Generate a keyed BLAKE2s-256 digest encoded as base64url for the text 'user:42:session:abc123' using the key 'mysecretkey', so I can use it as a short authentication token.”
Deduplication hash for text chunks
“Hash this text chunk using BLAKE2s-256 and return it as base64url so I can use it as a deduplication key: 'The quick brown fox jumps over the lazy dog'”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/digest-blake2s256-base64url?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, deterministic BLAKE2s-256 hash of text encoded specifically as base64url (not hex or standard base64). Prefer this over the sibling blake2s256-base64 endpoint when the output must be URL-safe. Use the free sandbox endpoint (/v1/sandbox/digest-blake2s256-base64url) first to test; pay only when you need production reliability. Ideal for agents requiring compact, URL-safe cryptographic fingerprints without any network or AI overhead.
Side effects
- Text or key exceeds length limits (text > 100,000 chars or key > 512 chars) — returns 4xx validation error
- Missing or empty text field — returns 4xx validation error
- Payment not provided or insufficient — returns 402 Payment Required
- Malformed request body — returns 4xx parse error
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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