# Environment Screen – US Area Environmental Screen

> Environment Screen – US Area Environmental Screen is a paid API for AI agents from environment-screen.x402tookit.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-11-02).

Returns a combined environmental snapshot for a US location: current modelled AQI, PM2.5, and count of EPA TRI facilities in the ZIP code, with a verdict and summary.

## Facts

- Endpoint: GET https://environment-screen.x402tookit.com/area-environment-screen?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/environment-screen-us-area-environmental-screen-8b3d8e7f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zVpPjGK7901MadCWJ97dn

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 environment-screen-us-area-environmental-screen-8b3d8e7f
```

Example prompt: Can you run an environmental screen for the area at latitude 34.0522, longitude -118.2437, ZIP code 90012 — I want to know the current AQI, PM2.5 levels, and how many EPA toxic release facilities are in that ZIP?

## When to prefer this

Choose this endpoint when you need a single combined environmental snapshot — air quality plus industrial facility proximity — for a US location in one call. It is ideal for real estate screening, neighborhood comparison, or any workflow where you want a high-level verdict and summary rather than raw time-series data. For historical AQI trends, use the daily mean endpoint; for European pollen data, use the pollen endpoint; for detailed TRI facility lists, use the TRI facilities endpoint.

## Known failure modes

- Missing or invalid lat/lon/zip parameters returns an error
- ZIP code not found in EPA TRI database returns null for TRI data
- Air quality model data unavailable for location returns null air object with degraded flag set
- Non-US coordinates may return incomplete or null results
- Malformed ZIP (not 5 digits) causes validation failure

## How this service works

Environmental screen for a US place: current modelled AQI and PM2.5 plus count of EPA TRI facilities in the ZIP.

## Output

Returns a structured object with current modelled air quality metrics (US AQI, PM2.5, PM10, ozone, NO2, category, timestamp), a count of EPA TRI facilities in the specified ZIP, an overall verdict string, a human-readable summary, a flag count, degraded-data indicator, source attribution, disclaimer, and lists of any unchecked factors.

## 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",
     "required": [
      "lat",
      "lon",
      "zip"
     ],
     "properties": {
      "lat": {
       "type": "number",
       "description": "Latitude"
      },
      "lon": {
       "type": "number",
       "description": "Longitude"
      },
      "zip": {
       "type": "string",
       "description": "5-digit US ZIP code of the place"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "air": {
       "type": [
        "null",
        "object"
       ],
       "properties": {
        "pm10": {
         "type": [
          "null",
          "number"
         ]
        },
        "time": {
         "type": [
          "null",
          "string"
         ]
        },
        "ozone": {
         "type": [
          "null",
          "number"
         ]
        },
        "pm2_5": {
         "type": [
          "null",
          "number"
         ]
        },
        "usAqi": {
         "type": [
          "null",
          "number"
         ]
        },
        "category": {
         "type": [
          "null",
          "string"
         ]
        },
        "nitrogenDioxide": {
         "type": [
          "null",
          "number"
         ]
        }
       }
      },
      "tri": {
       "type": [
        "null",
        "object"
       ],
       "properties": {
        "zip": {
         "type": [
          "null",
          "string"
         ]
        },
        "facilitiesInZip": {
         "type": [
          "null",
          "number"
         ]
        }
       }
      },
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "source": {
       "type": [
        "null",
        "string"
       ]
      },
      "reasons": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "summary": {
       "type": [
        "nu
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/environment-screen-us-area-environmental-screen-8b3d8e7f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from environment-screen.x402tookit.com](https://www.zero.xyz/host/environment-screen.x402tookit.com/llms.txt)