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Delx Commerce — JSON Array Index By Key
x402
Delx Commerce — JSON Array Index By Key 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).
Indexes an array of JSON objects by a specified key field, returning a dictionary keyed by each object's key value, with duplicate key detection.
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 JSON object with an 'index' property containing the key-indexed dictionary (each unique key maps to its corresponding object), a 'duplicate_keys' array listing any keys that appeared more than once, a status field ('pass'), evidence metadata including input SHA-256 hash and a flag confirming no data retention, and an operation identifier.
Example use cases
Build lookup map from API response
“I just fetched a list of user records from our database as a JSON array, each with a 'userId' field. Can you index them by 'userId' so I can look up any user instantly without scanning the whole list?”
Detect duplicate keys in dataset
“I have an array of 200 invoice objects, each supposed to have a unique 'invoiceNumber'. Index them by 'invoiceNumber' and tell me if any duplicates show up.”
Restructure config entries by name
“I have a JSON array of config entries, each with a 'name' key. Transform it into a dictionary indexed by 'name' so my agent can quickly pull up any config by its name.”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/json-array-index-by-key?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, verifiable, pay-per-call utility to convert a JSON array into a key-indexed dictionary without setting up any account or SDK. It is ideal for AI agents that need deterministic data restructuring with cryptographic evidence of processing (SHA-256 input hash, no-retention confirmation), priced at a fixed $0.001 USDC per call on Base or Solana. Prefer it over writing custom indexing logic inline when auditability or reproducibility of the transformation matters.
Side effects
- Key field not present in one or more objects — missing keys may be omitted from index or cause an error
- Array exceeds 256 items — request rejected
- Object exceeds 128 properties — request rejected
- Key string exceeds 8192 characters — rejected
- Payment not included or insufficient USDC — 402 response blocking execution
- Malformed JSON input — parsing error returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| key | string | Key supplied to JSON Array Index By Key; used only for this bounded calculation and processed in memory without retention. |
| items | array | Items supplied to JSON Array Index By Key; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"index": {
"\"a\"": {
"id": "a",
"value": 1
},
"\"b\"": {
"id": "b",
"value": 2
}
},
"duplicate_keys": []
},
"schema": "delx/util-json-array-index-by-key/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "3ba5729409fe1785540d75284648b16e6e90027012b970c2a4b84dc9207b7c6b",
"external_calls": 0
},
"operation": "data_batch:json_array_index_by_key"
}
}Tags
x402
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