# Event Attendance Grouped Numeric Summary

> Event Attendance Grouped Numeric Summary is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-19).

Computes grouped numeric summary statistics for event attendance and registration data, segmented by event type, from up to 200 supplied records.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-sector-analytics-event-attendance-group-summary?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/event-attendance-grouped-numeric-summary-3b4975d0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yAACm9VHoThB7DvQ30nIh

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability event-attendance-grouped-numeric-summary-3b4975d0 -d '<json body>'
```

Example prompt: Can you group these event records by event_type and give me a numeric summary of attendees? I have 4 rows: row-1 on 2026-10-01 with event_type group-a, 1 attendee and 10 registrations; row-2 on 2026-10-02 with event_type group-b, 2 attendees and 20 registrations; row-3 on 2026-10-03 with event_type group-a, 3 attendees and 15 registrations; row-4 on 2026-10-04 with event_type group-b, 4 attendees and 30 registrations — summarize the attendees field.

## When to prefer this

Choose this endpoint when you have raw event attendance or registration records that need to be segmented and summarized by event type, without needing external data enrichment or forecasting. It is ideal for batch sizes up to 200 records where a fast, local grouped aggregate is sufficient. Prefer alternatives if you need time-series forecasting, external data joining, or more than 200 records processed at once.

## Known failure modes

- Fewer than 1 row supplied — request rejected
- More than 200 rows supplied — request rejected
- Missing required fields (row_id, event_type, date, registrations, attendees) — validation error
- Date not in YYYY-MM-DD format — schema validation failure
- Null numeric values may affect aggregate calculations
- row_id longer than 80 characters or event_type longer than 80 characters — validation error

## How this service works

Event attendance - Grouped numeric summary: Grouped numeric summary for Event attendance. Up to 200 supplied typed records. Local numeric and data-quality processing; no external enrichment or forecasting. One of 25 profiles or calculations across 20 shared operations in this sector. 0.01 USDC includes one bounded grouped numeric summary deliverable.

## Output

A grouped numeric summary (e.g. counts, totals, averages, min/max) for the chosen field — either 'registrations' or 'attendees' — broken down by event_type category, computed locally from the supplied records with no external enrichment.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "row_id",
     "event_type",
     "date",
     "registrations",
     "attendees"
    ],
    "properties": {
     "date": {
      "type": "string",
      "default": "",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "maxLength": 10
     },
     "row_id": {
      "type": "string",
      "default": "",
      "maxLength": 80,
      "minLength": 1
     },
     "attendees": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     },
     "event_type": {
      "type": "string",
      "default": "",
      "maxLength": 80
     },
     "registrations": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "date": "2026-10-01",
     "row_id": "row-1",
     "attendees": 1,
     "event_type": "group-a",
     "registrations": 10
    },
    {
     "date": "2026-10-02",
     "row_id": "row-2",
     "attendees": 2,
     "event_type": "group-b",
     "registrations": 20
    },
    {
     "date": "2026-10-03",
     "row_id": "row-3",
     "attendees": 3,
     "event_type": "group-a",
     "registrations": 15
    },
    {
     "date": "2026-10-04",
     "row_id": "row-4",
     "attendees": 4,
     "event_type": "group-b",
     "registrations": 30
    }
   ],
   "maxItems": 200,
   "minItems": 1
  },
  "field": {
   "enum": [
    "registrations",
    "attendees"
   ],
   "type": "string",
   "default": "registrations"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/event-attendance-grouped-numeric-summary-3b4975d0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)