# Deflator-adjusted GDP – Ordered Trend Analysis

> Deflator-adjusted GDP – Ordered Trend Analysis 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).

Fits a descriptive straight-line (OLS) trend to up to 200 equally-spaced deflator-adjusted GDP observations and returns the formula, units, and statistical limitations as JSON.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-finance-real-gdp-trend?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/deflator-adjusted-gdp-ordered-trend-analysis-a77bc24e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9Mqfs3PP-wD1zACWM3NSh

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 deflator-adjusted-gdp-ordered-trend-analysis-a77bc24e -d '<json body>'
```

Example prompt: Fit a straight-line trend to these 8 quarters of real GDP data — nominal GDP values are 1200, 1320, 1260, 1400, 1380, 1500, 1450, 1560 and the corresponding deflators (base 100) are 120, 132, 126, 140, 138, 150, 145, 156 — and give me the trend formula and slope.

## When to prefer this

Choose this endpoint when you have a sequential series of nominal GDP and deflator pairs and need a simple, auditable straight-line trend summary — not a forecast — with formula and units returned as structured JSON. It is ideal for descriptive economic reporting, policy summaries, or comparative analysis across multiple economies. Prefer it over single-calculation endpoints when you have 2–200 ordered observations and want the aggregate trend rather than individual data points.

## Known failure modes

- Fewer than 2 row pairs supplied — returns validation error
- nominal_gdp or deflator_base_100 values missing or zero/negative — schema rejection
- More than 200 rows supplied — exceeds maxItems limit
- Non-numeric or malformed values in rows array — parse error
- Payment not completed or insufficient USDC balance — 402 Payment Required

## How this service works

Deflator-adjusted GDP - Ordered trend analysis: Fit a descriptive straight-line trend to up to 200 equally spaced supplied observations; no forecast. Metric: Deflator-adjusted GDP. 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 ordered trend analysis report.

## Output

Returns a JSON object containing the fitted linear trend formula (intercept and slope), the real GDP series derived from the supplied nominal GDP and deflator values, the units and reporting-period context, and a plain-language statement of statistical limitations (e.g., no forecast capability, descriptive only, bounded to supplied observations).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "nominal_gdp",
     "deflator_base_100"
    ],
    "properties": {
     "nominal_gdp": {
      "type": "number",
      "default": 1200,
      "maximum": 1000000000000,
      "minimum": 0,
      "description": "Amount in a consistent supplied currency and reporting period"
     },
     "deflator_base_100": {
      "type": "number",
      "default": 120,
      "maximum": 1000000000000,
      "minimum": 0,
      "description": "Amount in a consistent supplied currency and reporting period",
      "exclusiveMinimum": 0
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "nominal_gdp": 1200,
     "deflator_base_100": 120
    },
    {
     "nominal_gdp": 1320,
     "deflator_base_100": 132
    },
    {
     "nominal_gdp": 1200,
     "deflator_base_100": 120
    },
    {
     "nominal_gdp": 1320,
     "deflator_base_100": 132
    }
   ],
   "maxItems": 200,
   "minItems": 2
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/deflator-adjusted-gdp-ordered-trend-analysis-a77bc24e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
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