# Feed Observations — String Normalisation + Exact Row Deduplication

> Feed Observations — String Normalisation + Exact Row Deduplication is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).

Normalises strings and identifies exact duplicate rows in feed observation records (item_count, duplicate_items) across up to 200 rows, returning 2 analytical reports.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-web-11-020?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/feed-observations-string-normalisation-exact-row-deduplication-82c4c92f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oxgAb8Lr3o6eNkoGPUvuR

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 feed-observations-string-normalisation-exact-row-deduplication-82c4c92f -d '<json body>'
```

Example prompt: Can you run string normalisation and exact row deduplication on these feed observation records — I have 4 rows with site groups 'group-a' and 'group-b', dates from 2026-10-01 to 2026-10-04, item counts of 10, 20, 15, 30, and duplicate_items of 1, 2, 3, 4? I need both the normalisation and dedup reports.

## When to prefer this

Choose this endpoint when you need both string normalisation and exact duplicate detection on feed observation records in a single low-cost call ($0.01 USDC). It is purpose-built for feed data with item_count and duplicate_items fields, operates locally without external lookups, and is ideal for pre-ingestion data quality checks or periodic feed audits on datasets up to 200 rows.

## Known failure modes

- Exceeding 200 rows returns a validation error — batch must be split
- Missing required fields (row_id, site_group, date, item_count, duplicate_items) causes rejection
- Malformed date strings not matching YYYY-MM-DD pattern fail schema validation
- Empty rows array (minItems:1 violated) returns an error
- Numeric values outside the allowed range cause schema rejection

## How this service works

Feed observations — String normalisation + Exact row deduplication: String normalisation + Exact row deduplication for supplied feed observations records (item_count, duplicate_items). 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 2 independent analytical reports: (1) a string normalisation report detailing how text fields (e.g. site_group) were standardised, and (2) an exact row deduplication report identifying which rows among the submitted records are exact duplicates, covering up to 200 input rows.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/feed-observations-string-normalisation-exact-row-deduplication-82c4c92f/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)