# Coin Railz Air Quality (Sentinel-5P TROPOMI)

> Coin Railz Air Quality (Sentinel-5P TROPOMI) is a paid API for AI agents from coinrailz.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Returns atmospheric pollutant levels from Sentinel-5P TROPOMI satellite data for a given agent query

## Facts

- Endpoint: GET https://coinrailz.com/api/satellite/air-quality
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/coin-railz-air-quality-sentinel-5p-tropomi-25101a0f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zA0tIDBt9VyLoygtQa1w6

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 coin-railz-air-quality-sentinel-5p-tropomi-25101a0f
```

Example prompt: Can you pull the latest atmospheric pollutant levels from the Sentinel-5P TROPOMI satellite for my agent ID 'agent-abc-123'?

## When to prefer this

Choose this endpoint when you need satellite-derived atmospheric pollutant data (Sentinel-5P TROPOMI) via a pay-per-call x402 micropayment API, especially within an autonomous AI agent workflow already using the Coin Railz platform. Prefer over ground-station APIs when broad geographic satellite coverage is needed.

## Known failure modes

- Missing required agentId field returns validation error
- Invalid or unrecognized agentId may return unauthorized or error response
- Service outage or satellite data unavailability may return a 5xx error
- Payment failure via x402 protocol results in 402 Payment Required
- Malformed networks array may cause request rejection

## How this service works

Atmospheric pollutant levels from Sentinel-5P TROPOMI

## Output

Returns a JSON object confirming success, the service name ('air-quality'), a result message, and a timestamp. In practice expected to include atmospheric pollutant measurements (e.g. NO2, SO2, CO, ozone) sourced from Sentinel-5P TROPOMI satellite data.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "west",
  "south",
  "east",
  "north"
 ],
 "properties": {
  "east": {
   "type": "number",
   "description": "Eastern longitude boundary (-180 to 180)"
  },
  "west": {
   "type": "number",
   "description": "Western longitude boundary (-180 to 180)"
  },
  "north": {
   "type": "number",
   "description": "Northern latitude boundary (-90 to 90)"
  },
  "south": {
   "type": "number",
   "description": "Southern latitude boundary (-90 to 90)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "application/json",
 "format": "json",
 "example": {
  "result": "Service executed successfully",
  "service": "air-quality",
  "success": true,
  "timestamp": "2026-02-07T02:00:49.634Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/coin-railz-air-quality-sentinel-5p-tropomi-25101a0f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from coinrailz.com](https://www.zero.xyz/host/coinrailz.com/llms.txt)