# World Bank GDP by Country (Annual Time Series)

> World Bank GDP by Country (Annual Time Series) is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Returns the World Bank annual GDP (current US$) time series for a specified country using its ISO country code.

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/s/world-bank-gdp-by-country
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/world-bank-gdp-by-country-annual-time-series-6ec78054
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZlCd-y6tLPDNkOaTPI1_D

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 world-bank-gdp-by-country-annual-time-series-6ec78054 -d '<json body>'
```

Example prompt: Can you pull up the World Bank annual GDP time series for Germany (DE) in current US dollars?

## When to prefer this

Use this endpoint when you need historical annual GDP data in current US dollars for a specific country identified by ISO code, as provided by the World Bank. Ideal for economic analysis, trend visualization, or country comparison tasks where World Bank methodology is required.

## Known failure modes

- Invalid or unrecognized ISO country code returns an error or empty result
- Missing ?q= parameter causes a bad request response
- Country code with no World Bank data coverage returns empty dataset
- Network timeout or upstream World Bank API unavailability

## How this service works

World Bank annual GDP (current US$) time series for a country (ISO code, e.g. DE) Query: ?q= Returns JSON.

## Output

A JSON object containing the annual GDP (current US$) time series for the requested country, sourced from World Bank data, with year-by-year values.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/world-bank-gdp-by-country-annual-time-series-6ec78054/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from clonecho.builda.company](https://www.zero.xyz/host/clonecho.builda.company/llms.txt)