# Trading Journal Observations — Grouped Numeric Summary + Equal-Width Histogram

> Trading Journal Observations — Grouped Numeric Summary + Equal-Width Histogram 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).

Analyzes trading journal entry_price or exit_price data by producing a grouped numeric summary and an equal-width histogram for up to 200 rows.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-finance-09-093?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/trading-journal-observations-grouped-numeric-summary-equal-width-e43f773d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RrMrOICFcSYPiOknqjlH0

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 trading-journal-observations-grouped-numeric-summary-equal-width-e43f773d -d '<json body>'
```

Example prompt: Can you run a grouped numeric summary and equal-width histogram (10 bins) on these 50 trading journal rows — analyzing entry_price grouped by instrument_group? Here's the data: [row_id, instrument_group, date, entry_price, exit_price for each row].

## When to prefer this

Choose this endpoint when you have trading journal data with entry and exit prices already in hand and need both a grouped statistical summary and a histogram in one call for up to 200 rows. It is ideal for offline batch analysis of trade records without requiring live market data, predictions, or external lookups. Prefer it over generic statistics APIs when you specifically need instrument_group-level breakdowns paired with histogram binning in a single low-cost ($0.01) request.

## Known failure modes

- Rows array is empty or missing — API rejects with validation error
- More than 200 rows supplied — exceeds maxItems limit, request rejected
- Required fields (row_id, instrument_group, date, entry_price, exit_price) missing from any row — validation error
- bin count outside 1–30 range — rejected by schema validation
- Malformed date format (not YYYY-MM-DD) — validation error
- field value not one of ['entry_price','exit_price'] — enum validation failure
- Payment of 0.01 USDC not provided — 402 payment required response

## How this service works

Trading journal observations — Grouped numeric summary + Equal-width histogram: Grouped numeric summary + Equal-width histogram for supplied trading journal observations records (entry_price, exit_price). 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 reports: (1) a grouped numeric summary of the chosen price field (entry_price or exit_price) broken down by instrument_group, including statistics like mean, min, max, and count; and (2) an equal-width histogram showing the frequency distribution of the selected price field across the specified number of bins. All analysis is performed locally on the supplied data with no external lookups.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "bins": {
   "type": "integer",
   "default": 5,
   "maximum": 30,
   "minimum": 1
  },
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "row_id",
     "instrument_group",
     "date",
     "entry_price",
     "exit_price"
    ],
    "properties": {
     "date": {
      "type": "string",
      "default": "",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "maxLength": 10
     },
     "row_id": {
      "type": "string",
      "default": "",
      "maxLength": 80,
      "minLength": 1
     },
     "exit_price": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     },
     "entry_price": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     },
     "instrument_group": {
      "type": "string",
      "default": "",
      "maxLength": 80
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "date": "2026-10-01",
     "row_id": "row-1",
     "exit_price": 1,
     "entry_price": 10,
     "instrument_group": "group-a"
    },
    {
     "date": "2026-10-02",
     "row_id": "row-2",
     "exit_price": 2,
     "entry_price": 20,
     "instrument_group": "group-b"
    },
    {
     "date": "2026-10-03",
     "row_id": "row-3",
     "exit_price": 3,
     "entry_price": 15,
     "instrument_group": "group-a"
    },
    {
     "date": "2026-10-04",
     "row_id": "row-4",
     "exit_price": 4,
     "entry_price": 30,
     "instrument_group": "group-b"
    }
   ],
   "maxItems": 200,
   "minItems": 1
  },
  "field": {
   "enum": [
    "entry_price",
    "exit_price"
   ],
   "type": "string",
   "default": "entry_price"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/trading-journal-observations-grouped-numeric-summary-equal-width-e43f773d/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)