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ONE Engine Array Head – First 3 Items (Tier 10)
x402
ONE Engine Array Head – First 3 Items (Tier 10) is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.007/call, status unknown (last checked 2026-10-14).
Returns the first 3 elements of a submitted array, with Tier 10 richer diagnostic metadata included in the response.
Price / call$0.007
Success—
StatusUnknown
How this service works
Return first 3 array items. Tier 10/10 adds richer diagnostics.
Output
A JSON response containing a sliced array of the first 3 elements from the input array, plus Tier 10 diagnostic metadata such as input length, slice bounds, processing tier, and any enriched debug information about the operation.
Example use cases
Preview top pipeline results
“I just got back a long list of search results as an array — can you pull out just the first 3 items so I can preview the top results before deciding what to do next? Include the diagnostics too.”
Limit feed entries for display
“I have an array of 50 news feed entries and I only want to show the first 3 in my dashboard widget — trim the array to the first 3 and give me the diagnostic info.”
Sample leading data rows
“This dataset came back as a big JSON array — can you extract the first 3 rows from it so I can sanity-check the structure and field names before processing the whole thing?”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v6/array-head/items-3/t10?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, cheap, deterministic head-slice of exactly 3 items from a JSON array and want the richest available diagnostic output (Tier 10). Prefer it over manual slicing in agent code when auditability, diagnostic tracing, or pay-per-call metering on Base via x402 is desired.
Side effects
- Empty array input returns empty result or an error indicating nothing to slice
- Non-array body causes a 400-level parse error
- Array with fewer than 3 items returns all available items (or an error depending on strict mode)
- Malformed JSON body results in a parsing failure
- Payment not provided or insufficient causes a 402 Payment Required response
Tags
x402
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