# Event Attendance Numeric Distribution

> Event Attendance Numeric Distribution 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 a numeric distribution summary (descriptive statistics) for event attendance or registration data across up to 200 records.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-sector-analytics-event-attendance-describe?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-numeric-distribution-4f43a63e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ukPyaZRC7p6KqeupzgND9

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-numeric-distribution-4f43a63e -d '<json body>'
```

Example prompt: Can you compute the numeric distribution for the attendees field across these 4 event records — a group-a event on 2026-10-01 with 10 registrations and 1 attendee, a group-b on 2026-10-02 with 20 registrations and 2 attendees, group-a on 2026-10-03 with 15 registrations and 3 attendees, and group-b on 2026-10-04 with 30 registrations and 4 attendees?

## When to prefer this

Choose this endpoint when you have up to 200 structured event attendance records and need a quick, local numeric distribution — no external enrichment, forecasting, or machine learning. Ideal for data profiling, pre-reporting QA, or lightweight statistical summaries of attendance or registration counts within a constrained, well-typed dataset.

## Known failure modes

- Empty rows array or missing required fields (row_id, event_type, date, registrations, attendees) returns a validation error
- More than 200 rows submitted exceeds the maxItems limit and will be rejected
- Invalid date format (not YYYY-MM-DD) causes schema validation failure
- Non-numeric or out-of-range values for registrations/attendees may trigger data-quality flags
- Invalid field enum value (anything other than 'registrations' or 'attendees') causes a bad request error

## How this service works

Event attendance - Numeric distribution: Numeric distribution 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 numeric distribution deliverable.

## Output

Returns a bounded numeric distribution summary for the selected field (registrations or attendees) across the supplied event records, including descriptive statistics and local data-quality indicators — no external data is fetched or appended.

## 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-numeric-distribution-4f43a63e/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)