# Job Listing Inventories — Two-Measure Correlation + Secondary-Measure Weighted Mean

> Job Listing Inventories — Two-Measure Correlation + Secondary-Measure Weighted Mean is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-15).

Computes a two-measure correlation between listing_count and duplicate_listings, plus a weighted mean for a selected secondary measure, across up to 200 rows of job listing inventory data.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-company-13-181?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/job-listing-inventories-two-measure-correlation-secondary-measure-5357215f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_itYd7UVFzO2xXg1eJQ44L

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 job-listing-inventories-two-measure-correlation-secondary-measure-5357215f -d '<json body>'
```

Example prompt: Can you run a two-measure correlation between listing_count and duplicate_listings, plus a weighted mean for listing_count, on these 4 job inventory rows: row-1 (group-a, 2026-10-01, listing_count=10, duplicate_listings=1), row-2 (group-b, 2026-10-02, listing_count=20, duplicate_listings=2), row-3 (group-a, 2026-10-03, listing_count=15, duplicate_listings=3), row-4 (group-b, 2026-10-04, listing_count=30, duplicate_listings=4)?

## When to prefer this

Choose this endpoint when you need two statistical outputs — a two-measure correlation and a weighted mean — computed together on job listing inventory data (listing_count, duplicate_listings) in a single API call. It is cost-effective at $0.01 for both reports on up to 200 rows. Prefer it over single-report endpoints when you want both correlation and weighted mean without separate calls, and when your data is already structured with company_group, date, listing_count, and duplicate_listings fields.

## Known failure modes

- Empty rows array or rows exceeding 200 items will be rejected
- Rows missing required fields (row_id, company_group, date, listing_count, duplicate_listings) will fail validation
- Date fields not matching YYYY-MM-DD format will cause schema errors
- Null values in both measure columns may produce undefined correlation results
- Invalid enum value for 'field' parameter causes request rejection
- Payment of 0.01 USDC not included or declined causes 402 Payment Required error

## How this service works

Job listing inventories — Two-measure correlation + Secondary-measure weighted mean: Two-measure correlation + Secondary-measure weighted mean for supplied job listing inventories records (listing_count, duplicate_listings). 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 analytical reports: (1) a Pearson or equivalent two-measure correlation between listing_count and duplicate_listings across the supplied rows, and (2) a weighted mean for the selected secondary measure (listing_count or duplicate_listings). Both reports are computed locally on the submitted data with no external lookups.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "row_id",
     "company_group",
     "date",
     "listing_count",
     "duplicate_listings"
    ],
    "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
     },
     "listing_count": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     },
     "duplicate_listings": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "date": "2026-10-01",
     "row_id": "row-1",
     "company_group": "group-a",
     "listing_count": 10,
     "duplicate_listings": 1
    },
    {
     "date": "2026-10-02",
     "row_id": "row-2",
     "company_group": "group-b",
     "listing_count": 20,
     "duplicate_listings": 2
    },
    {
     "date": "2026-10-03",
     "row_id": "row-3",
     "company_group": "group-a",
     "listing_count": 15,
     "duplicate_listings": 3
    },
    {
     "date": "2026-10-04",
     "row_id": "row-4",
     "company_group": "group-b",
     "listing_count": 30,
     "duplicate_listings": 4
    }
   ],
   "maxItems": 200,
   "minItems": 1
  },
  "field": {
   "enum": [
    "listing_count",
    "duplicate_listings"
   ],
   "type": "string",
   "default": "listing_count"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/job-listing-inventories-two-measure-correlation-secondary-measure-5357215f/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)