# Trade Observations — String Normalisation + Secondary-Measure Weighted Mean

> Trade Observations — String Normalisation + 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 2026-10-29).

Performs string normalisation and secondary-measure weighted mean computation on supplied trade observation records (export_amount, import_amount) for up to 200 rows, returning two analytical reports.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-economics-06-034?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/trade-observations-string-normalisation-secondary-measure-weighted-mean-bb3dcdaa
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MC25wjYaZL_tRJGjU6SQu

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 trade-observations-string-normalisation-secondary-measure-weighted-mean-bb3dcdaa -d '<json body>'
```

Example prompt: Run string normalisation and a secondary-measure weighted mean on my trade observations — here are 4 rows with region, date, export_amount, and import_amount — use export_amount as the primary field and give me both reports.

## When to prefer this

Choose this endpoint when you need both string normalisation and a secondary-measure weighted mean computed together on trade observation data (export_amount, import_amount) in a single low-cost call. It is ideal for economics workflows processing up to 200 rows of regional trade records where you want two bundled analytical outputs without live lookups or external data enrichment.

## Known failure modes

- More than 200 rows submitted — exceeds maxItems limit
- Missing required fields (row_id, region, date, export_amount, or import_amount) in any row
- Date field does not match YYYY-MM-DD pattern
- Numeric values outside allowed range (-1,000,000,000,000 to 1,000,000,000,000)
- Invalid enum value for field parameter (must be export_amount or import_amount)
- Payment not completed — endpoint requires 0.01 USDC via x402 protocol

## How this service works

Trade observations — String normalisation + Secondary-measure weighted mean: String normalisation + Secondary-measure weighted mean for supplied trade observations records (export_amount, import_amount). 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

Two analytical reports: (1) a string normalisation report for the trade observation records across the supplied rows, and (2) a secondary-measure weighted mean report for the chosen primary field (export_amount or import_amount) weighted by the other measure, covering up to 200 rows of input data.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/trade-observations-string-normalisation-secondary-measure-weighted-mean-bb3dcdaa/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)