# Specification Traceability — Base-100 Series + Secondary-Measure Weighted Mean

> Specification Traceability — Base-100 Series + 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 2026-10-24).

Computes a Base-100 indexed series and a secondary-measure weighted mean for specification traceability records containing mapped and total requirements counts.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-writing-21-166?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-base-100-series-secondary-measure-weighted-4a70c02d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pAwYI2wG01kezSMClG6mD

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-base-100-series-secondary-measure-weighted-4a70c02d -d '<json body>'
```

Example prompt: Can you run a base-100 series and weighted mean analysis on my specification traceability data? I have 4 rows covering document groups 'core-spec' and 'interface-spec' from 2026-10-01 to 2026-10-04, with mapped_requirements values of 10, 20, 15, and 30 and total_requirements of 1, 2, 3, and 4 — use mapped_requirements as the primary field and base index 0.

## When to prefer this

Choose this endpoint when you need two complementary statistical views — a normalized Base-100 time series and a weighted mean — on specification traceability data without requiring any external data sources or live lookups. It is ideal for requirements engineering analytics workflows where you supply your own records and want fast, local computation for up to 200 rows at minimal cost ($0.01 USDC for both reports).

## Known failure modes

- Missing required fields (row_id, date, mapped_requirements, total_requirements) returns a validation error
- More than 200 rows in the input array exceeds the maxItems limit and will be rejected
- Invalid date format (not YYYY-MM-DD) causes a schema validation failure
- base_index value referencing a non-existent row index causes an out-of-range error
- Null values in numeric fields may affect weighted mean calculations

## How this service works

Specification traceability — Base-100 series + Secondary-measure weighted mean: Base-100 series + Secondary-measure weighted mean 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 analytical reports: (1) a Base-100 indexed time series for the selected field (mapped_requirements or total_requirements) normalized relative to the chosen base index row, and (2) a secondary-measure weighted mean across the supplied records. Results cover up to 200 input rows and are computed locally with no external lookups.

## 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"
  },
  "base_index": {
   "type": "integer",
   "default": 0,
   "maximum": 199,
   "minimum": 0
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/specification-traceability-base-100-series-secondary-measure-weighted-4a70c02d/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)