# Return on Average Assets – Distribution Summary

> Return on Average Assets – Distribution Summary is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).

Summarises up to 200 return-on-average-assets (ROAA) observations with quantiles and population standard deviation, returning a structured JSON report with formula, units, and limitations.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-finance-return-assets-summary?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/return-on-average-assets-distribution-summary-e44d21a8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8OnNbBtlaf2CnK-REphDM

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 return-on-average-assets-distribution-summary-e44d21a8 -d '<json body>'
```

Example prompt: Can you summarise the distribution of return on average assets for these observations — I have net income and average assets pairs for 8 quarters: (3000, 40000), (3300, 44000), (2800, 39000), (3100, 41000), (3400, 45000), (2900, 38000), (3200, 43000), (3050, 40500) — give me quantiles and standard deviation.

## When to prefer this

Choose this endpoint when you have a batch of net income and average assets observations (2–200) and need descriptive distribution statistics — quantiles and standard deviation — for return on average assets, without needing a live data feed, financial advice, or trade execution. It is purpose-built for ROAA specifically, so prefer it over a general statistics calculator when you want the output annotated with the ROAA formula and financial context.

## Known failure modes

- Fewer than 2 observation rows supplied — minimum is 2 rows
- More than 200 observation rows supplied — maximum is 200
- average_assets value of 0 or negative — field has exclusiveMinimum:0
- net_income or average_assets outside ±1,000,000,000,000 bounds
- Malformed row objects missing required net_income or average_assets fields
- Payment not included or insufficient — endpoint requires 0.01 USDC via x402

## How this service works

Return on average assets - Distribution summary: Summarise up to 200 calculated observations with quantiles and population standard deviation. Metric: Return on average assets. Supplied figures only; returns JSON with formula, units and limitations. One of 50 calculators with 20 analysis modes. No live feed, financial advice or trade execution. 0.01 USDC includes one bounded distribution summary report.

## Output

A JSON object containing the distribution summary of ROAA observations, including quantiles (e.g. p25, p50, p75), population standard deviation, the formula used to compute ROAA, the units of measurement, and any stated limitations of the analysis.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "net_income",
     "average_assets"
    ],
    "properties": {
     "net_income": {
      "type": "number",
      "default": 3000,
      "maximum": 1000000000000,
      "minimum": -1000000000000,
      "description": "Amount in a consistent supplied currency and reporting period"
     },
     "average_assets": {
      "type": "number",
      "default": 40000,
      "maximum": 1000000000000,
      "minimum": 0,
      "description": "Amount in a consistent supplied currency and reporting period",
      "exclusiveMinimum": 0
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "net_income": 3000,
     "average_assets": 40000
    },
    {
     "net_income": 3300.0000000000005,
     "average_assets": 44000
    },
    {
     "net_income": 3000,
     "average_assets": 40000
    },
    {
     "net_income": 3300.0000000000005,
     "average_assets": 44000
    }
   ],
   "maxItems": 200,
   "minItems": 2
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/return-on-average-assets-distribution-summary-e44d21a8/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)