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agent402.tools Group-By Aggregation
x402
agent402.tools Group-By Aggregation is a paid API for AI agents from agent402.tools, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Groups an array of JSON objects by one or more keys and aggregates a numeric field using count, sum, avg, min, or max — like SQL GROUP BY for JSON data.
Price / call$0.001
Success—
StatusUnknown
How this service works
Group an array of objects by one or more keys and aggregate a numeric field — count (default), sum, avg, min, or max. The SQL GROUP BY agents reach for when wrangling JSON. Deterministic (groups in first-seen order).
Output
Returns grouped results where each entry corresponds to a unique combination of the specified key(s), with the computed aggregate value (count, sum, avg, min, or max) of the target numeric field for that group, in first-seen order.
Example use cases
Example prompt
“I have this array of sales records — can you group them by 'region' and 'product_category', then sum the 'revenue' field for each group?”
Technical details
Endpoint
POSThttps://agent402.tools/api/group-byWhen to prefer
Use this endpoint when you have an in-memory JSON array and need SQL-style GROUP BY aggregation without standing up a database or writing custom reduce logic. It handles multi-key grouping and five aggregation operations in a single call, making it ideal for lightweight ETL, report generation, or ad-hoc data summarization tasks inside an agent workflow.
Side effects
- Missing or non-array 'data' field returns an error
- Specified 'field' does not exist or is non-numeric when using sum/avg/min/max
- Invalid 'op' value outside allowed enum
- 'by' key does not exist on the objects in the array
- Payment not processed (x402 payment required, returns 402 if unpaid)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| by | — | key name, or array of key names, to group by |
| op | string | count (default) | sum | avg | min | max |
| data | — | array of objects (or JSON string) |
| field | string | numeric field to aggregate (omit for count only) |
Output
Schema · Response
{
"type": "json",
"example": {
"count": 2,
"groups": [
{
"key": {
"city": "NYC"
},
"sum": 5,
"count": 2
},
{
"key": {
"city": "LA"
},
"sum": 5,
"count": 1
}
]
}
}Tags
x402
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