# Survey Response Weights — Duplicate Key Report + Adjacent Row Changes

> Survey Response Weights — Duplicate Key Report + Adjacent Row Changes is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-11-02).

Analyzes survey response weight records to produce two local reports: a duplicate key detection report and an adjacent row changes report, for up to 200 rows.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-economics-24-062?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/survey-response-weights-duplicate-key-report-adjacent-row-changes-dbb5a2c0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4BAWdEZ2dwpP04l8HVLbi

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 survey-response-weights-duplicate-key-report-adjacent-row-changes-dbb5a2c0 -d '<json body>'
```

Example prompt: Check my survey response weight data for duplicate row IDs and flag adjacent row changes in the response_value field — here are the records: row-1 2026-10-01 group-a response 10 weight 1, row-2 2026-10-02 group-b response 20 weight 2, row-3 2026-10-03 group-a response 15 weight 3.

## When to prefer this

Choose this endpoint when you need fast, offline-style duplicate key detection and adjacent row change analysis on survey response weight data specifically (response_value and sample_weight fields), without requiring any external data lookup or live prediction. It is ideal when you have up to 200 rows of survey records and want two reports in a single $0.01 USDC call. Prefer it over general-purpose data tools when you need structured, economics-domain reporting on weighted survey data.

## Known failure modes

- More than 200 rows submitted — request rejected due to maxItems constraint
- Missing required fields (row_id, region, date, response_value, sample_weight) cause validation errors
- Invalid date format (not YYYY-MM-DD) triggers pattern validation failure
- Numeric values outside the allowed range (-1,000,000,000,000 to 1,000,000,000,000) are rejected
- Invalid field enum value (not response_value or sample_weight) causes schema error
- Empty rows array (minItems: 1 violation) returns an error

## How this service works

Survey response weights — Duplicate key report + Adjacent row changes: Duplicate key report + Adjacent row changes for supplied survey response weights records (response_value, sample_weight). 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 duplicate key report identifying any row_id values that appear more than once in the submitted dataset, and (2) an adjacent row changes report showing where the selected field (response_value or sample_weight) differs between consecutive rows. Both reports are computed locally against the supplied data with no external lookups.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/survey-response-weights-duplicate-key-report-adjacent-row-changes-dbb5a2c0/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)