# Transaction Fee Observations — Record Quality Audit + Secondary-Measure Weighted Mean

> Transaction Fee Observations — Record Quality Audit + 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 2026-10-26).

Audits record quality and computes a secondary-measure weighted mean for up to 200 transaction fee observation rows (fee_units, transaction_count).

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-finance-03-016?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-26
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/transaction-fee-observations-record-quality-audit-secondary-measure-94a837e2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xNuWIZ1MJsr6GYtEcA2_G

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 transaction-fee-observations-record-quality-audit-secondary-measure-94a837e2 -d '<json body>'
```

Example prompt: Can you audit the quality of these transaction fee records and compute a transaction-count weighted mean of fee_units? I have 4 rows: row-1 on 2026-10-01 with fee_units=10, transaction_count=1 for group-a; row-2 on 2026-10-02 with fee_units=20, transaction_count=2 for group-b; row-3 on 2026-10-03 with fee_units=15, transaction_count=3 for group-a; row-4 on 2026-10-04 with fee_units=30, transaction_count=4 for group-b.

## When to prefer this

Choose this endpoint when you need both a data quality audit and a weighted mean statistic on transaction fee observation data in a single call, especially when working with up to 200 rows of fee_units and transaction_count pairs. It is ideal for pre-processing fee data before reporting or analysis, and when you want a locally computed (no external lookup) dual-report output at low cost ($0.01 USDC for both reports).

## Known failure modes

- Rows array empty or missing — validation error
- More than 200 rows submitted — rejected with maxItems error
- Invalid date format (not YYYY-MM-DD) — schema validation failure
- fee_units or transaction_count out of allowed numeric range — rejected
- Invalid field enum value — schema validation error
- All transaction_count values are zero or null — weighted mean undefined or zero

## How this service works

Transaction fee observations — Record quality audit + Secondary-measure weighted mean: Record quality audit + Secondary-measure weighted mean for supplied transaction fee observations records (fee_units, transaction_count). 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 record quality audit identifying missing, null, out-of-range, or malformed values across the supplied rows; and (2) a secondary-measure weighted mean of the specified field (fee_units or transaction_count), weighted by the other measure. Both reports are computed locally from the supplied data with no external lookups.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/transaction-fee-observations-record-quality-audit-secondary-measure-94a837e2/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)