# United States Population and Urbanisation (World Bank WDI)

> United States Population and Urbanisation (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 2026-10-30).

Returns annual World Bank WDI population and urbanisation indicators for the United States (or any 2-letter country code) over a specified year range.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/signal-economy-us-population?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/united-states-population-and-urbanisation-world-bank-wdi-7b50442d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0p5opjmDDOdoQLK27ydZM

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 united-states-population-and-urbanisation-world-bank-wdi-7b50442d -d '<json body>'
```

Example prompt: Can you pull World Bank WDI population and urbanisation data for the United States from 1990 to 2022?

## When to prefer this

Choose this endpoint when you need structured, authoritative World Bank WDI annual population and urbanisation statistics for a specific country and year range, especially when you want historical time series with known provenance. Prefer it over ad-hoc web scraping or general-purpose search when you need clean, schema-consistent demographic data ready for analysis or charting.

## Known failure modes

- Invalid country code (not a valid 2-letter ISO code) returns a validation error
- Requested year range outside available WDI data (pre-1960) returns an error or empty results
- World Bank data lag means the most recent years may not yet have observations
- Network or upstream World Bank API unavailability causes service errors

## How this service works

United States: Population and urbanisation: Population and urbanisation for United States: 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 indicators related to population and urbanisation for the specified country and year range, including historical time series values, the source update date, and the latest available observations.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "country": {
   "type": "string",
   "default": "US",
   "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/united-states-population-and-urbanisation-world-bank-wdi-7b50442d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
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