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JSON Array Sort By Key
x402
JSON Array Sort By Key is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Sorts an array of JSON objects by a specified top-level key, ascending or descending, returning the reordered array with counts and a versioned result contract.
Price / call$0.001
Success—
StatusUnknown
How this service works
JSON Array Sort By Key: JSON Array Sort By Key sorts object rows by a selected top-level key from bounded caller-supplied values without an external provider. Call JSON Array Sort By Key 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 Array Sort By Key as versioned deterministic JSON. Price: $0.001 USDC via x402 on…
Output
Returns the sorted JSON array of objects ordered by the specified top-level key (ascending or descending), along with item counts, normalized values, and a versioned deterministic result contract. The transformation is computed in-memory without data retention.
Example use cases
Sort leaderboard by score descending
“I have a leaderboard as a JSON array of player objects — sort them by 'score' descending so I can display the top players first: [{"player":"Alice","score":340},{"player":"Bob","score":512},{"player":"Carol","score":275}].”
Order product catalog by price
“Sort this product catalog by the 'price' field ascending before I pass it to my checkout tool: [{"id":1,"name":"Mug","price":9.99},{"id":2,"name":"Notebook","price":4.49},{"id":3,"name":"Pen","price":1.99}].”
Rank agent tasks by priority
“I've got a list of agent tasks with a 'priority' field — can you sort them descending by 'priority' so the most urgent ones are at the top before I hand them off to the executor?”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/json-array-sort-by-keyWhen to prefer
Choose this endpoint when you need a deterministic, in-memory, serverless sort of a JSON array by a top-level object key without standing up any infrastructure or writing code. It is ideal for pre-processing structured data before handing it to a downstream tool with a strict ordering contract. Prefer it over writing a sort routine in an agent's code execution step when you want a clean, versioned, auditable result contract. Not suitable for nested-key sorting, arrays larger than 256 items, or complex multi-key sort requirements.
Side effects
- Key not found in one or more objects — items with missing key may sort inconsistently or return an error
- Array exceeds 256 items — request rejected with validation error
- Object contains more than 128 properties — may be rejected
- Non-comparable mixed types under the sort key (e.g. string vs number) — may produce undefined ordering or error
- Malformed JSON array input — request rejected
- Payment failure via x402 — request not processed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| key | string | Key supplied to JSON Array Sort By Key; used only for this bounded calculation and processed in memory without retention. |
| items | array | Items supplied to JSON Array Sort By Key; used only for this bounded calculation and processed in memory without retention. |
| descending | boolean | Descending supplied to JSON Array Sort By Key; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"key": "id",
"items": [
{
"id": 1
},
{
"id": 2
}
]
},
"schema": "delx/util-json-array-sort-by-key/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "bf681df4606cba8b0ec23d87bda8e34c27fbf446a8b5b0d57f064b3afa47afd5",
"external_calls": 0
},
"operation": "data_batch:json_array_sort_by_key"
}
}Tags
x402
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