# PM2.5 Air Pollution Exposure by Country

> PM2.5 Air Pollution Exposure 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 2026-09-14).

Returns the latest mean annual PM2.5 air pollution exposure (µg/m³) for every country worldwide as JSON.

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/s/pm25-air-pollution
- 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/pm2-5-air-pollution-exposure-by-country-dbc6e8cf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JRG16CBCVqVdM0EbI7bw1

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 pm2-5-air-pollution-exposure-by-country-dbc6e8cf -d '<json body>'
```

Example prompt: Can you pull up the latest mean annual PM2.5 air pollution exposure levels for every country in the world so I can compare which nations have the worst fine particulate matter concentrations?

## When to prefer this

Use this endpoint when you need a complete global snapshot of PM2.5 air pollution exposure across all countries in a single call, without needing to specify any parameters. Ideal for building dashboards, performing cross-country environmental comparisons, or enriching datasets with air quality context.

## Known failure modes

- Payment not fulfilled — 402 response if x402 payment header is missing or invalid
- Service temporarily unavailable — 503 if the upstream data source is down
- Data may be slightly stale if the underlying World Bank or WHO dataset has not been updated recently

## How this service works

Latest mean annual PM2.5 air pollution exposure in micrograms per cubic meter across every country. Returns JSON.

## Output

A JSON object containing a list of all countries with their latest mean annual PM2.5 air pollution exposure values in micrograms per cubic meter (µg/m³).

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pm2-5-air-pollution-exposure-by-country-dbc6e8cf/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)