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Delx Commerce — JSON Key Denylist
x402
Delx Commerce — JSON Key Denylist is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Checks a JSON object against a list of denied key names and returns which forbidden keys are present
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.
Output
Returns a result object indicating whether the JSON object passed the denylist check (passed: true/false), a list of any denied keys that were found, the operation schema identifier, a status field (e.g. 'advisory'), and evidence metadata including whether input was retained (always false), the SHA-256 hash of the input, and the number of external calls made (always 0).
Example use cases
Sensitive field detection before logging
“Before I log this API response, check if the JSON object contains any of these forbidden keys: 'password', 'ssn', 'credit_card', 'secret'. Here's the object: {"user_id": 42, "email": "alice@example.com", "password": "abc123", "plan": "pro"}.”
Config object policy enforcement
“I have a config object and want to make sure none of these banned keys are present: 'private_key', 'master_token', 'admin_override'. The object is {"host": "localhost", "port": 5432, "private_key": "xyz"}. Does it pass?”
Agent output sanitization before forwarding
“My agent just produced this JSON result and I need to verify it doesn't contain any of these disallowed keys before I forward it: 'internal_notes', 'debug_trace', 'raw_prompt'. Object: {"summary": "Done", "internal_notes": "user seems confused", "output": "Here is your answer"}.”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/json-key-denylist?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a lightweight, stateless, pay-per-call check to detect forbidden or sensitive key names in a JSON object without storing any data. Ideal for agent pipelines that need verifiable, auditable validation (evidenced by input SHA-256) with no signup overhead. Prefer this over custom code when you need a provably non-retaining, in-memory-only key scan with cryptographic evidence of the input processed.
Side effects
- Input object exceeds 128 properties — request rejected
- Denied list exceeds 256 items or any item exceeds 8192 characters — validation error
- Malformed JSON body — parse error response
- Payment failure via x402 — 402 Payment Required before processing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| denied | array | Denied supplied to JSON Key Denylist; used only for this bounded calculation and processed in memory without retention. |
| object | object | Object supplied to JSON Key Denylist; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"passed": false,
"denied_keys": [
"password"
]
},
"schema": "delx/util-json-key-denylist/v1",
"status": "advisory",
"evidence": {
"retained": false,
"input_sha256": "e2140fb14617296830e26895419ba5db41e0d9b605a101ae52d4dc0f016e86e2",
"external_calls": 0
},
"operation": "data_batch:json_key_denylist"
}
}Tags
x402
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