# World Bank Population Density — All Countries & Regions

> World Bank Population Density — All Countries & Regions is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Returns the latest World Bank population density figure (people per sq. km of land area) for every country and region in a single JSON response.

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/s/worldbank-population-density
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/world-bank-population-density-all-countries-regions-3cda4055
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZHbE2WJLdmlNVi5Qdk9u1

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-density-all-countries-regions-3cda4055 -d '<json body>'
```

Example prompt: Can you pull up the latest World Bank population density figures — people per square kilometer of land — for every country and region all at once?

## When to prefer this

Use this endpoint when you need a comprehensive, single-call snapshot of population density for all countries and regions at once, sourced from World Bank data, without needing to specify any country or region parameter. Ideal for comparative analysis, data enrichment, or populating a global dataset.

## Known failure modes

- Network or service unavailability returning a non-200 status
- Payment required / x402 payment not completed resulting in 402 error
- Malformed or empty JSON response if upstream World Bank data is temporarily unavailable
- Stale or missing data for some countries if World Bank has not published recent values

## How this service works

Latest population density (people per sq. km of land) for every country and region, one value each. No params. Returns JSON.

## Output

A JSON object containing population density values (people per sq. km of land area) for every country and region worldwide, each with a single latest data point sourced from the World Bank.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/world-bank-population-density-all-countries-regions-3cda4055/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)