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ONE Engine Array Frequency (T9)
x402
ONE Engine Array Frequency (T9) is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.018/call, status unknown (last checked 2026-10-02).
Computes frequency distribution of elements in a JSON array, with optional comparison against a second array.
Price / call$0.018
Success—
StatusUnknown
How this service works
Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.
Output
Returns an object containing frequency counts for each unique element in the input array, and optionally a comparison breakdown when a second array is provided. The response includes occurrence tallies per element, enabling ranking or distribution analysis.
Example use cases
Survey response tally
“I have survey responses in this array: ["yes","no","yes","maybe","yes","no","yes"] — count how often each answer appears so I can see which was most common.”
Log error frequency analysis
“Here's a list of error codes from our system logs: ["404","500","404","403","500","404","200","500"] — give me a frequency breakdown of each error code, and compare it to last week's baseline ["404","404","500","200"].”
Product category ranking
“Count how many times each category appears in this product list: ["electronics","clothing","electronics","food","clothing","electronics","food","food"] so I can rank them by popularity.”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v3/array/frequency/t9?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to count element occurrences or compute a frequency distribution over a JSON array of up to 1000 items, especially when you also want to compare frequencies between two arrays. It is pay-per-call with no subscription needed, making it ideal for lightweight, on-demand statistical analysis in agent workflows.
Side effects
- Array exceeds 1000 items — request rejected
- Invalid JSON array format for values field — validation error
- Missing required 'values' field — 400 error
- Payment not included or insufficient — 402 Payment Required
- Malformed comparison array in 'other' field — processing error
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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