# Link Inventories — Secondary-Measure Weighted Mean + Keyed Dataset Comparison

> Link Inventories — Secondary-Measure Weighted Mean + 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 2026-10-22).

Computes a secondary-measure weighted mean and compares two keyed link inventory datasets (internal_links, external_links) for up to 200 rows, returning two analytical reports.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-web-03-186?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/link-inventories-secondary-measure-weighted-mean-keyed-dataset-1c81ac73
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wZwLgTGTfdNJy7fdrweHJ

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 link-inventories-secondary-measure-weighted-mean-keyed-dataset-1c81ac73 -d '<json body>'
```

Example prompt: I have two link inventory datasets for my site groups (group-a and group-b) across October 2026 — can you compute the secondary-measure weighted mean for internal_links and run a keyed comparison between the two datasets so I can see how they differ row by row?

## When to prefer this

Choose this endpoint when you have pre-collected link inventory data (internal and external link counts per page or site group) and need both a weighted mean summary statistic and a side-by-side keyed comparison between two datasets — all in a single cheap call with no external lookups. Ideal for SEO audits, before/after site migration analysis, or periodic reporting where data is already on hand.

## Known failure modes

- Missing required fields (row_id, site_group, date, internal_links, external_links) cause validation errors
- Exceeding 200 rows per dataset triggers a maxItems rejection
- Invalid date format (not YYYY-MM-DD) causes pattern validation failure
- Mismatched row_id keys between primary and comparison datasets may result in unmatched or empty comparison rows
- Null values in the target field may be excluded or cause partial weighted mean results
- Empty rows array (minItems:1 not met) returns an error

## How this service works

Link inventories — Secondary-measure weighted mean + Keyed dataset comparison: Secondary-measure weighted mean + Keyed dataset comparison for supplied link inventories records (internal_links, external_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 analytical reports: (1) a secondary-measure weighted mean for the chosen field (internal_links or external_links) across the supplied rows, and (2) a keyed dataset comparison between the primary and secondary datasets matched by row_id, highlighting differences per site group and date.

## Request schema (JSON Schema)

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

… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/link-inventories-secondary-measure-weighted-mean-keyed-dataset-1c81ac73/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)