# World Bank Population Time Series by Country

> World Bank Population Time Series by Country 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 total population time series for a given country identified by its ISO country code.

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/s/world-bank-population-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-population-time-series-by-country-34b0f07e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WZV1HmleivZFPzeGvJrY1

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-population-time-series-by-country-34b0f07e -d '<json body>'
```

Example prompt: Can you pull the World Bank total population time series for India (ISO code IN) and show me how the numbers have changed over the years?

## When to prefer this

Use this endpoint when you need historical total population data for a specific country sourced directly from World Bank datasets, particularly when you need a time series rather than a single point-in-time figure. Prefer this over generic web search when you need structured, machine-readable JSON data suitable for analysis or charting.

## Known failure modes

- Invalid or unrecognized ISO country code returns empty or error JSON
- Missing query parameter ?q= may return an error or empty result
- Network timeout or upstream World Bank API unavailability
- Country code with no World Bank data coverage returns empty dataset

## How this service works

World Bank total population time series for a country (ISO code, e.g. IN) Query: ?q= Returns JSON.

## Output

A JSON object containing the World Bank total population time series for the requested country, with year-by-year population figures indexed by the ISO country code provided in the query parameter.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/world-bank-population-time-series-by-country-34b0f07e/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)