# Cache Observations – Category Frequencies

> Cache Observations – 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 2026-10-21).

Computes category-frequency counts across cache observation records (hits/misses by cache group and date) for up to 200 rows of typed input data.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ar-analytics-cache-observations-category-counts?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cache-observations-category-frequencies-1deacc93
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7s5PxIjBRFVEHuExtCQVc

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 cache-observations-category-frequencies-1deacc93 -d '<json body>'
```

Example prompt: Can you calculate category frequencies for these cache observations? I have 4 records: row-1 on 2026-10-01 with cache 'group-a', 10 hits, 1 miss; row-2 on 2026-10-02 with cache 'group-b', 20 hits, 2 misses; row-3 on 2026-10-03 with cache 'group-a', 15 hits, 3 misses; row-4 on 2026-10-04 with cache 'group-b', 30 hits, 4 misses.

## When to prefer this

Choose this endpoint when you need a quick, local descriptive frequency count over a bounded set of cache observation records (up to 200 rows) without requiring external data enrichment, forecasting, or access to live systems. It is ideal for auditing cache group distribution, pre-optimization analysis, or summarizing cache behavior from exported logs at a low per-call cost of $0.01 USDC.

## Known failure modes

- Empty rows array or missing required fields (row_id, cache, date, hits, misses) returns a validation error
- Submitting more than 200 rows exceeds the maxItems limit and will be rejected
- Invalid date format (not YYYY-MM-DD) triggers a pattern validation failure
- Numeric values outside the allowed range (±1,000,000,000,000) cause a schema error
- Network or payment (x402) failure returns a non-2xx HTTP response without a frequency report

## How this service works

Cache observations - Category frequencies: Category frequencies for Cache observations. Up to 200 supplied typed records. Local descriptive analytics; no enrichment or forecast. One of 25 new profiles across 20 shared operations in this industry. 0.01 USDC includes one bounded category frequencies report.

## Output

A bounded category-frequency report listing each unique cache group name found in the submitted rows alongside its occurrence count and relative frequency, derived purely from the supplied input records with no external enrichment or forecasting.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cache-observations-category-frequencies-1deacc93/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)