# Block Observations — Exact Row Deduplication + Secondary-Measure Weighted Mean

> Block Observations — Exact Row Deduplication + 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 2026-10-25).

Deduplicates block observation rows exactly and computes a secondary-measure weighted mean across up to 200 blockchain block records (block_transactions, block_gas).

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-finance-13-051?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-25
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/block-observations-exact-row-deduplication-secondary-measure-weighted-969df3bf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dKbQTtu4vlun7xnGkENQk

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 block-observations-exact-row-deduplication-secondary-measure-weighted-969df3bf -d '<json body>'
```

Example prompt: I have up to 200 rows of blockchain block observations with block_transactions and block_gas values across multiple instrument groups and dates — can you deduplicate them exactly and compute the secondary-measure weighted mean using block_gas as the field, and give me both reports?

## When to prefer this

Choose this endpoint when you need both exact duplicate detection and a weighted mean computation on blockchain block-level data (block_transactions, block_gas) in a single paid call. It is ideal for pre-processing raw block observation exports before analytics pipelines, handling up to 200 rows per call at low cost ($0.01 USDC for two reports). Prefer this over generic deduplication tools when your data specifically contains instrument_group-segmented block metrics and you need both deduplication and aggregation in one pass.

## Known failure modes

- Input array exceeds 200 rows — request rejected
- Missing required fields (row_id, instrument_group, date, block_transactions, block_gas) — validation error
- Invalid date format (must match YYYY-MM-DD) — schema rejection
- Numeric values outside allowed range (-1,000,000,000,000 to 1,000,000,000,000) — validation error
- Invalid field enum value (must be block_transactions or block_gas) — schema error
- Payment not received or insufficient USDC — 402 Payment Required
- Empty rows array — minItems constraint violation

## How this service works

Block observations — Exact row deduplication + Secondary-measure weighted mean: Exact row deduplication + Secondary-measure weighted mean for supplied block observations records (block_transactions, block_gas). 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) an exact-row deduplication result identifying and removing duplicate records from the supplied block observation rows, and (2) a secondary-measure weighted mean computed over the deduplicated dataset using the selected field (block_transactions or block_gas), all processed locally without external lookups.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/block-observations-exact-row-deduplication-secondary-measure-weighted-969df3bf/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)