# air-quality-oracle

> air-quality-oracle is a paid API for AI agents from store.cryptotradecalc.com, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-14).

Returns European Air Quality Index along with pollen levels and UV index for any specified city, aggregated via Open-Meteo

## Facts

- Endpoint: GET https://store.cryptotradecalc.com/api/air-quality
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/air-quality-oracle-b348e47d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6wR6-llH9If6t7NXYH0fl

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-oracle-b348e47d
```

Example prompt: What's the European Air Quality Index, pollen count, and UV index for Berlin right now?

## When to prefer this

Choose this endpoint when you need a combined European Air Quality Index along with pollen and UV data for a European city in a single call. Prefer it over generic weather APIs when EAQI-standard air quality metrics and pollen data are specifically needed. Best for health-related, outdoor planning, or environmental monitoring use cases for European cities.

## Known failure modes

- Unknown or misspelled city name returns an error or empty result
- City outside Open-Meteo's European coverage area may return no data
- Network timeout or upstream Open-Meteo API unavailability
- Missing required 'city' query parameter returns a validation error

## How this service works

air-quality-oracle: European Air Quality Index with pollen and UV for any city via Open-Meteo aggregation

## Output

Returns the European Air Quality Index (EAQI) score, pollen levels, and UV index for the requested city, aggregated from Open-Meteo data sources. Likely includes air quality category/label, individual pollutant values, and UV/pollen readings as structured JSON.

## 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": {
      "city": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/air-quality-oracle-b348e47d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from store.cryptotradecalc.com](https://www.zero.xyz/host/store.cryptotradecalc.com/llms.txt)