# Specification Traceability — Grouped Numeric Summary + Two-Measure Correlation

> Specification Traceability — Grouped Numeric Summary + Two-Measure Correlation 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 a grouped numeric summary and a two-measure correlation report for specification traceability records containing mapped_requirements and total_requirements fields.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-writing-21-095?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/specification-traceability-grouped-numeric-summary-two-measure-6586fa5f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iOLYIRSVOiV8ECAE9toBI

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 specification-traceability-grouped-numeric-summary-two-measure-6586fa5f -d '<json body>'
```

Example prompt: Can you run a grouped numeric summary and a two-measure correlation on my specification traceability data? I have rows with document_group, date, mapped_requirements, and total_requirements — I want to analyze mapped_requirements across the groups.

## When to prefer this

Choose this endpoint when you need both a grouped statistical summary and a correlation analysis on specification traceability data (mapped vs total requirements) in a single low-cost call. It is best suited for structured tabular records already in hand — it performs no live data fetching, prediction, or external lookups. Prefer it over generic analytics tools when your data fits the requirements traceability schema and you want two complementary statistical views for up to 200 rows at minimal cost.

## Known failure modes

- Missing required fields (row_id, document_group, date, mapped_requirements, total_requirements) causes validation errors
- More than 200 rows submitted exceeds the per-call limit
- Malformed date strings not matching YYYY-MM-DD pattern are rejected
- All-null numeric fields may produce undefined correlation output
- Payment of 0.01 USDC not included or rejected blocks processing

## How this service works

Specification traceability — Grouped numeric summary + Two-measure correlation: Grouped numeric summary + Two-measure correlation for supplied specification traceability records (mapped_requirements, total_requirements). 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 grouped numeric summary showing aggregate statistics for the chosen measure (mapped_requirements or total_requirements) broken down by document_group, and (2) a two-measure correlation report quantifying the relationship between mapped_requirements and total_requirements across the supplied rows. Covers up to 200 input rows.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/specification-traceability-grouped-numeric-summary-two-measure-6586fa5f/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)