# Poland Trade and Investment Indicators (World Bank WDI)

> Poland Trade and Investment Indicators (World Bank WDI) is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-21).

Returns three World Bank WDI annual trade and investment indicators for Poland (or any 2-letter country code) with historical data and latest available observations.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/signal-economy-pl-trade?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/poland-trade-and-investment-indicators-world-bank-wdi-e82d1ac3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DPaB86Y9M6qpcrBqZ7OxE

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 poland-trade-and-investment-indicators-world-bank-wdi-e82d1ac3 -d '<json body>'
```

Example prompt: Pull the World Bank WDI trade and investment indicators for Poland from 2000 to 2023 and show me the historical trend with the latest available data points.

## When to prefer this

Choose this endpoint when you need structured, historical World Bank WDI trade and investment indicators specifically for Poland or another country, with a consistent annual time series and metadata about data freshness. Prefer it over scraping World Bank directly for pre-packaged, payment-ready access to these specific indicators.

## Known failure modes

- Invalid country code (not matching ^[A-Za-z]{2}$ pattern) returns validation error
- Year range with no available WDI data returns empty or partial results
- World Bank data source temporarily unavailable may return upstream error
- start_year greater than end_year may return empty series or error
- Payment failure (x402 protocol) prevents data retrieval

## How this service works

Poland: Trade and investment indicators: Trade and investment indicators for Poland: three World Bank WDI annual indicators with history, source update date and latest available observations. Country and years can be overridden.

## Output

Returns three World Bank WDI annual trade and investment indicator series for the specified country (defaulting to Poland/PL), covering the requested year range, along with the source update date and the latest available observation values for each indicator.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "country": {
   "type": "string",
   "default": "PL",
   "pattern": "^[A-Za-z]{2}$"
  },
  "end_year": {
   "type": "integer",
   "minimum": 1960
  },
  "start_year": {
   "type": "integer",
   "minimum": 1960
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/poland-trade-and-investment-indicators-world-bank-wdi-e82d1ac3/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)