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Canonical JSON and Digest
x402
Canonical JSON and Digest is a paid API for AI agents from twin.unykorn.org, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-01).
Converts a JSON object into its canonical (deterministic) form and returns its digest, with a signed payment receipt
Price / call$0.002
Success—
StatusUnknown
How this service works
Canonical JSON and its digest — Genesis402 / UnyKorn Operator Network
Output
Returns the canonical (deterministic, normalized) form of the submitted JSON object along with its digest, a confirmation flag, the response type label 'json-canonical', a blockchain transaction hash, a USD amount, and a unique receipt ID with an ISO 8601 timestamp.
Example use cases
Deterministic hash before signing
“I need to canonicalize this JSON before I sign it — can you convert {"amount":100,"currency":"USD","recipient":"alice"} into canonical form and give me the digest?”
Verifying JSON integrity across systems
“Two systems gave me slightly different JSON representations of the same data object. Can you canonicalize {"id":"abc123","status":"active","score":9.5} and return its digest so I can compare them deterministically?”
Preparing JSON for blockchain submission
“Before I submit this payload to the smart contract, I need it in canonical JSON form with a digest — please process {"txType":"transfer","from":"0xAAA","to":"0xBBB","value":500} for me.”
Technical details
Endpoint
POSThttps://twin.unykorn.org/json-canonical?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a deterministic, canonical representation of a JSON object (e.g., for signing, hashing, or cross-system comparison) and want a signed payment receipt as proof of processing. It is particularly useful in blockchain, smart contract, or cryptographic workflows where JSON key ordering and formatting must be standardized before signing or committing data.
Side effects
- Invalid or malformed JSON input returns an error
- Missing 'params.json' field causes bad request
- Payment failure or insufficient funds prevents call
- Network timeout on the operator endpoint
- Extremely large JSON objects may be rejected or time out
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| params | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"type": "json-canonical",
"receipt": {
"tx_hash": "0x<64hex>",
"amount_usd": 0.002,
"receipt_id": "g402-<16hex>"
},
"generated_at": "<iso8601>"
}
}Tags
x402
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