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ONE Engine Array Frequency Counter
x402
ONE Engine Array Frequency Counter is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0007/call, status unknown (last checked 2026-10-02).
Computes the frequency (occurrence count) of each element in a JSON array, optionally comparing against a second array or applying an offset.
Price / call$0.0007
Success—
StatusUnknown
How this service works
Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.
Output
A JSON object mapping each unique element in the input array to its occurrence count, potentially including comparison deltas if a second array is provided. The response may include a frequency map, ranked list, or histogram-style breakdown depending on request parameters.
Example use cases
Survey response tally
“I have a list of 500 survey answers like ['yes','no','maybe','yes','yes','no'] — can you count how many times each answer appears so I can see the distribution?”
Duplicate detection in logs
“Here's an array of error codes from our logs: ['E404','E500','E404','E403','E500','E500'] — tell me how frequently each error code occurs so I know which ones to prioritize.”
Two-array frequency comparison
“Compare the frequency of values in my baseline array [1,2,2,3,3,3] against a new sample array [1,1,2,3,3] and show me how the counts differ between the two.”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v3/array/frequency/t2?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, cheap, pay-per-call frequency count or value tally on an array of up to 1000 items, especially in autonomous agent workflows using x402 micropayments on Base. Prefer it over general-purpose code execution when you want a lightweight, no-infrastructure utility call without spinning up compute.
Side effects
- Array exceeds 1000-item limit — request rejected with validation error
- Malformed or non-array values input — schema validation failure
- Payment not included or insufficient — 402 Payment Required response
- Empty array input — may return empty frequency map or error
- Network timeout on large arrays near the size limit
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| size | integer | |
| other | array | Optional comparison array |
| offset | integer | |
| valuesrequired | array | JSON array with at most 1000 items |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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