# air-quality-budapest

> air-quality-budapest is a paid API for AI agents from data.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-14).

Returns real-time air quality data for Budapest including European and US AQI, PM2.5, PM10, ozone, NO2, SO2, and CO with a health label, sourced from Open-Meteo/CAMS.

## Facts

- Endpoint: GET https://data.intel.rallylive.ca/data/air-quality/budapest?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/air-quality-budapest-063542c3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PyeBE8HSdVVC3xjdrGnZB

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 air-quality-budapest-063542c3
```

Example prompt: What's the current air quality in Budapest — give me the AQI, PM2.5, and whether it's safe to go for a run outside?

## When to prefer this

Use this endpoint when you need real-time, city-specific air quality data for Budapest with multiple pollutant breakdowns and dual AQI standards (EU and US). Prefer this over general weather APIs that omit detailed air quality metrics, or over generic air quality APIs when you specifically need Budapest data pre-packaged with health labels and CAMS-sourced pollutant concentrations.

## Known failure modes

- CAMS/Open-Meteo data source temporarily unavailable — may return stale or null readings
- Network timeout if upstream model data is delayed
- Payment failure if x402 USDC payment is not completed correctly
- HTTP 402 if payment is missing or insufficient

## How this service works

Air quality in Budapest right now: European and US AQI, PM2.5, PM10, ozone, nitrogen dioxide, sulphur dioxide and carbon monoxide with a health label, from Open-Meteo Air Quality (CAMS). Outdoor-activity and health decisions for Budapest. $0.01 per call.

## Output

Returns current air quality metrics for Budapest including European AQI, US AQI, PM2.5 (µg/m³), PM10 (µg/m³), ozone, nitrogen dioxide, sulphur dioxide, and carbon monoxide concentrations, along with a human-readable health label (e.g. 'Good', 'Moderate', 'Unhealthy') derived from CAMS model data.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/air-quality-budapest-063542c3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from data.intel.rallylive.ca](https://www.zero.xyz/host/data.intel.rallylive.ca/llms.txt)