# Broken Link Observations — Numeric Distribution & Category Frequencies

> Broken Link Observations — Numeric Distribution & Category Frequencies is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-24).

Computes numeric distribution statistics and category frequency counts for supplied broken-link observation records (checked_links, broken_links) on up to 200 rows.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-web-17-072?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/broken-link-observations-numeric-distribution-category-frequencies-9f0aea04
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_s1e7YAsRIG8KYJPgt9TZO

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 broken-link-observations-numeric-distribution-category-frequencies-9f0aea04 -d '<json body>'
```

Example prompt: I have broken link observation data for two site groups across a few dates — can you run both a numeric distribution and a category frequency analysis on the broken_links field for these rows: row-1 group-a 2026-10-01 checked=10 broken=1, row-2 group-b 2026-10-02 checked=20 broken=2, row-3 group-a 2026-10-03 checked=15 broken=3?

## When to prefer this

Choose this endpoint when you have up to 200 broken-link or link-check observation records and need both a numeric distribution summary and category-level frequency counts in a single low-cost call. It is purpose-built for web link health data with site_group and date dimensions, unlike generic stats APIs that require schema mapping. Prefer it over manual analysis when you need quick dual reports (distribution + frequency) on crawl data without any external data fetching.

## Known failure modes

- Fewer than 1 row supplied — request rejected
- More than 200 rows supplied — exceeds max item limit
- Invalid date format (not YYYY-MM-DD) — schema validation error
- Missing required fields (row_id, site_group, date, checked_links, broken_links) — schema error
- Field enum value not in [checked_links, broken_links] — validation error
- Payment of 0.01 USDC not included — 402 response

## How this service works

Broken link observations — Numeric distribution + Category frequencies: Numeric distribution + Category frequencies for supplied broken link observations records (checked_links, broken_links). Up to 200 rows; 2 independent reports using shared local analytical engines. No live lookup, prediction, professional assessment or external action. 0.01 USDC includes 2 supplied-data reports for up to 200 rows.

## Output

Returns two independent analytical reports for the selected numeric field: (1) a numeric distribution report showing spread, min, max, mean, percentiles, and histogram-style binning; (2) a category frequency report showing counts and proportions grouped by site_group. Both reports are computed locally against the supplied rows (up to 200), with no external lookups.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/broken-link-observations-numeric-distribution-category-frequencies-9f0aea04/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)