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SHA3-256 Digest as Base64URL
x402
SHA3-256 Digest as Base64URL is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-01).
Computes a SHA3-256 cryptographic hash of input text and returns it encoded as base64url
Price / call$0.005
Success—
StatusUnknown
How this service works
Call when an agent needs a sha3-256 digest of text, encoded as base64url. No network and no LLM. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-256-base64url first.
Output
Returns a SHA3-256 cryptographic digest of the submitted text, encoded as a base64url string. The output is deterministic and suitable for use as a fingerprint, checksum, or compact identifier in URLs and headers.
Example use cases
Integrity fingerprint for stored document
“I need to generate a SHA3-256 fingerprint of this contract text encoded as base64url so I can store it alongside the file and verify it hasn't been tampered with later: 'This agreement is entered into on January 1, 2025...'”
Unique token derived from user input
“Take the string 'user-session-abc123-2025' and compute its SHA3-256 hash in base64url encoding so I can use it as a unique, safe identifier in a URL.”
Verify data consistency across systems
“I have two systems that both claim to have the same payload. Can you SHA3-256-hash this text in base64url format so I can compare it against what the other system reports: 'product_id=9821&price=49.99&qty=3'?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/digest-sha3-256-base64url?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you specifically need SHA3-256 (Keccak family, not SHA-2) output in base64url encoding — particularly when the digest must be safe for URL or filename use without additional encoding. Prefer the free sandbox variant (/v1/sandbox/digest-sha3-256-base64url) for testing. Use this paid version in production or when sandbox access is unavailable.
Side effects
- Text exceeds 100,000 character limit — request rejected
- Empty text or key field — validation error
- Malformed JSON body — 400 bad request
- Payment not included or insufficient — 402 payment required
- Network timeout during payment processing
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
Reviews
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Zero review prompt (fires after every successful call)
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