API · x402

AirScout air-quality query (current AQI, EPA activity verdict, and the cleanest window…

AirScout air-quality query (current AQI, EPA activity verdict, and the cleanest window ahead)

by airscout.scalpstream.com · discovered, not yet claimed by its owner · updated 2026-09-01

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

AirScout air-quality query (current AQI, EPA activity verdict, and the cleanest window ahead)

Tags: bazaar

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/15483.json for the price and payment options.
Pay. Call GET https://airscout.scalpstream.com/air. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, Arbitrum One, Polygon, xrpl:0, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.01 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base, Arbitrum One, Polygon, xrpl:0
Calls (30d): 1 · 1 unique payers (third-party data from the public x402 Bazaar)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.01	0xD0f5d2E48e67A265174593aCe2cd540337C1564a	60s
exact	Arbitrum One eip155:42161	USDC	$0.01	0xD0f5d2E48e67A265174593aCe2cd540337C1564a	60s
exact	Polygon eip155:137	USDC	10000	0xD0f5d2E48e67A265174593aCe2cd540337C1564a	60s
exact	xrpl:0 xrpl:0	XRP	7430	rwV5T9Gnr5EBH9rJ2G4NABc4bun2XEkHaD	60s
exact	xrpl:0 xrpl:0	RLUSD	0.01	rwV5T9Gnr5EBH9rJ2G4NABc4bun2XEkHaD	60s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xD0f5d2E48e67A265174593aCe2cd540337C1564a",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "amountUsd": 0.01,
    "maxTimeoutSeconds": 60
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "payTo": "0xD0f5d2E48e67A265174593aCe2cd540337C1564a",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "10000",
    "amountUsd": 0.01,
    "maxTimeoutSeconds": 60
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "payTo": "0xD0f5d2E48e67A265174593aCe2cd540337C1564a",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cc03d5c3359",
    "amount": "10000",
    "maxTimeoutSeconds": 60
  },
  {
    "scheme": "exact",
    "network": "xrpl:0",
    "payTo": "rwV5T9Gnr5EBH9rJ2G4NABc4bun2XEkHaD",
    "asset": "XRP",
    "amount": "7430",
    "maxTimeoutSeconds": 60
  },
  {
    "scheme": "exact",
    "network": "xrpl:0",
    "payTo": "rwV5T9Gnr5EBH9rJ2G4NABc4bun2XEkHaD",
    "asset": "RLUSD",
    "amount": "0.01",
    "maxTimeoutSeconds": 60
  }
]

Schemas

Output schema (JSON Schema)

{
  "bazaar": {
    "description": "Air-quality query for any coordinates worldwide: current US AQI and dominant pollutant, an EPA-based verdict on outdoor exertion, and the cleanest contiguous window in the forecast ahead.",
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "duration": "2",
          "hours": "24",
          "lat": "47.6588",
          "lon": "-117.4260"
        },
        "type": "http"
      },
      "output": {
        "example": {
          "best_window": {
            "aqi": 28,
            "end": "2026-08-06T21:00Z",
            "start": "2026-08-06T19:00Z"
          },
          "current": {
            "aqi": 42,
            "category": "Good",
            "dominant": "pm2_5"
          },
          "disclaimer": "Air quality is modelled (Copernicus CAMS via Open-Meteo), not a reading from a sensor at your exact location; local conditions near fires, traffic or industry can differ sharply. Activity guidance follows US EPA AirNow categories and is general public-health information, not medical advice — if you have a heart or lung condition, follow your clinician's advice.",
          "place": "Spokane",
          "price_usd": "0.01",
          "service": "AirScout",
          "source": "Open-Meteo Air Quality API (CC-BY-4.0), based on Copernicus Atmosphere Monitoring Service (CAMS) models",
          "verdict": "Good — no restrictions on outdoor exertion."
        },
        "format": "application/json",
        "type": "json"
      }
    },
    "schema": {
      "properties": {
        "best_window": {
          "properties": {
            "aqi": {
              "type": "integer"
            },
            "end": {
              "type": "string"
            },
            "start": {
              "type": "string"
            }
          },
          "type": "object"
        },
        "current": {
          "properties": {
            "aqi": {
              "type": "integer"
            },
            "category": {
              "type": "string"
            },
            "dominant": {
              "type": "string"
            }
          },
          "type": "object"
        },
        "disclaimer": {
          "type": "string"
        },
        "place": {
          "type": "string"
        },
        "price_usd": {
          "type": "string"
        },
        "service": {
          "type": "string"
        },
        "source": {
          "type": "string"
        },
        "verdict": {
          "type": "string"
        }
      },
      "type": "object"
    }
  }
}

Example shape — generated from the schema, not a captured live response

null

Examples

curl

curl "https://airscout.scalpstream.com/air"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://airscout.scalpstream.com/air");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://airscout.scalpstream.com/air")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: airscout.scalpstream.com
Endpoint: https://airscout.scalpstream.com/air
Machine-readable: /resources/15483.json