# Registry Snapshots — Category Frequencies + Keyed Dataset Comparison

> Registry Snapshots — Category Frequencies + Keyed Dataset Comparison is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-23).

Analyzes registry snapshot data by computing category frequencies and performing a keyed dataset comparison across two supplied datasets of up to 200 rows each.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-company-04-111?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/registry-snapshots-category-frequencies-keyed-dataset-comparison-01240565
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TGeyVGVpEcMBtWRukqgAp

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 registry-snapshots-category-frequencies-keyed-dataset-comparison-01240565 -d '<json body>'
```

Example prompt: I have two sets of registry snapshot records for our company groups — one from last month and one from this month — with registered_entities and changed_entities counts per row. Can you run a category frequency analysis and a keyed comparison between the two datasets to see how they differ?

## When to prefer this

Choose this endpoint when you need both a category frequency distribution and a row-keyed comparison across two registry or entity-tracking datasets in a single call. It is ideal for auditing changes between two snapshots of company registration data, reconciling registry exports, or profiling entity activity by group — all without requiring any live external lookups or predictions. Prefer this over general analytics tools when your data fits the company_group + registered_entities + changed_entities schema and you need both report types for under $0.01.

## Known failure modes

- Missing required fields (row_id, company_group, date, registered_entities, changed_entities) causes validation error
- More than 200 rows submitted results in rejection or truncation
- Invalid date format (not YYYY-MM-DD) fails pattern validation
- Numeric values outside the allowed range (-1T to 1T) are rejected
- Empty rows array causes minItems violation
- Payment of 0.01 USDC not provided results in 402 error

## How this service works

Registry snapshots — Category frequencies + Keyed dataset comparison: Category frequencies + Keyed dataset comparison for supplied registry snapshots records (registered_entities, changed_entities). 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: (1) a category frequencies report showing the distribution of registry records across company groups and date categories, and (2) a keyed dataset comparison report showing row-level differences between the two supplied datasets based on shared keys. Both reports are computed locally with no external lookups, covering up to 200 rows per dataset.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/registry-snapshots-category-frequencies-keyed-dataset-comparison-01240565/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)