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JSON Hash Fields Check
x402
JSON Hash Fields Check is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-22).
Hashes selected fields of a JSON object to a caller-specified hexadecimal digest length and returns counts, normalized values, and a versioned validation result.
Price / call$0.001
Success—
StatusUnknown
How this service works
JSON Hash Fields Check: JSON Hash Fields Check checks selected fields for caller-specified hexadecimal digest length from bounded caller-supplied values without an external provider. Call JSON Hash Fields Check before an agent hands structured data or a batch plan to a downstream tool with a stricter contract. Returns the bounded transformation or validation finding with counts, normalized values, and a versioned result contract for JSON Hash Fields Check as versioned deterministic JSON. Price:…
Output
Returns a versioned deterministic JSON object containing the hex hash digests for the selected fields, field counts, normalized values, and a versioned result contract. All computation is done in-memory without data retention.
Example use cases
Pre-flight data integrity check
“Before I send this batch plan JSON to the downstream processor, hash the fields 'order_id' and 'payload_hash' with a 32-character hex digest so I can verify integrity: {"order_id": "ORD-9921", "payload_hash": "xyz", "amount": 500}.”
Field-level deduplication fingerprint
“I need a 12-character hex fingerprint of just the 'email' and 'phone' fields from this customer record to use as a dedup key: {"email": "jane@example.com", "phone": "555-1234", "name": "Jane Doe"}.”
Contract validation before agent handoff
“Check and hash the 'transaction_id' and 'status' fields from this result object with a 64-character hex length before I hand it off to the settlement tool: {"transaction_id": "TXN-0042", "status": "confirmed", "timestamp": "2024-01-15T10:00:00Z"}.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/json-hash-fields-check?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent needs to compute deterministic, bounded hex-length hashes of specific fields within a JSON object before passing structured data to a downstream tool with a strict contract. Prefer it over general-purpose hash utilities when you need versioned, normalized output with field counts in a single call without any external dependencies or data retention.
Side effects
- Invalid or missing 'fields' array returns a validation error
- 'hex_length' value out of acceptable bounds causes a rejection response
- 'object' exceeds maxProperties (128) limit causing a schema validation error
- Fields specified in 'fields' array not present in 'object' may return null or missing hash entries
- Malformed JSON in the object body results in a parse error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| fields | array | Fields supplied to JSON Hash Fields Check; used only for this bounded calculation and processed in memory without retention. |
| object | object | Object supplied to JSON Hash Fields Check; used only for this bounded calculation and processed in memory without retention. |
| hex_length | integer | Hex Length supplied to JSON Hash Fields Check; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"passed": true,
"invalid_fields": []
},
"schema": "delx/util-json-hash-fields-check/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "b34b373467de4fd6c74125aa7caaaca2d8f0a53e73f08fb6d013e1409f387018",
"external_calls": 0
},
"operation": "data_batch:json_hash_fields_check"
}
}Tags
x402
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