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Delx Array Last
x402
Delx Array Last is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Returns the last element of an input array along with an empty flag, with no data retention.
Price / call$0.001
Success—
StatusUnknown
How this service works
Return the last list element. Call when you need tail of an agent-held array safely. Returns value and empty flag for $0.001 USDC via x402 on Base. No network, no keys, no retention; first-party local JSON only. Results are advisory; the caller owns budgets, auth, and production controls.
Output
Returns the last element of the provided array (its value) and a boolean empty flag indicating whether the input array was empty. No data is retained after the call.
Example use cases
Tail check in pipeline processing
“I'm processing a queue and need the last item from this list ["task-a", "task-b", "task-c"] — grab it for me and tell me if the list was empty.”
Most recent log entry retrieval
“Here's a list of log entries: ["error at 09:00", "warning at 09:15", "info at 09:30"] — what's the last one, and was the list empty?”
Final result extraction from agent output
“My agent just produced this result list: [42, 87, 13, 99] — I need the last value from it to decide the next step, and also confirm the array wasn't empty.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/arr-lastWhen to prefer
Choose this endpoint when an agent needs to safely retrieve the last element of an array it holds in memory, especially when you also need an explicit empty-array signal without writing conditional logic. Prefer it over manual index arithmetic when operating in a microservice or agentic pipeline context where simplicity, no-retention guarantees, and a predictable cost ($0.001 USDC) matter. Not appropriate for sorting, searching, or multi-element slicing operations.
Side effects
- Empty array input — returns empty flag as true with no value
- Malformed or missing 'items' field — likely returns a validation error
- Non-array type passed as items — may result in a schema error
- Network timeout — transient failure with no side effects
- Payment failure via x402 — call is rejected before processing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| items | array | Input field: items. |
Output
Schema · Response
{
"type": "json",
"example": {
"empty": false,
"value": "gamma",
"schema": "delx/util-arr-last/v1"
}
}Tags
x402
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