# Environment Screen: EPA TRI Facility Count by State or County

> Environment Screen: EPA TRI Facility Count by State or County is a paid API for AI agents from environment-screen.x402tookit.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-11-02).

Returns the count of EPA Toxics Release Inventory facilities (open vs. closed) in a US state or county, plus a sample list of facility details.

## Facts

- Endpoint: GET https://environment-screen.x402tookit.com/tri-area-summary?utm_source=zero.xyz
- Price: $0.03/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-epa-tri-facility-count-by-state-or-county-fc6f9f3a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_S8QRnRxVfD09m3TP63CLK

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-epa-tri-facility-count-by-state-or-county-fc6f9f3a
```

Example prompt: How many EPA Toxics Release Inventory facilities are there in Massachusetts — break it down by open versus closed, and show me a sample of up to 15 open ones.

## When to prefer this

Use this endpoint when you need a quick aggregate count of EPA TRI facilities at the state or county level, with an optional sample list of facilities. It is ideal for environmental due diligence, regulatory research, or public health analysis scoped to a US state or county. Prefer the ZIP-code sibling endpoint when you need finer geographic granularity, or the facility-chemicals endpoint when you need chemical-level detail for a specific facility.

## Known failure modes

- Missing required 'state' parameter returns an error
- Invalid or unrecognized state code may return zero results or an error
- County name misspellings or unrecognized county names may return empty results
- Data may be degraded or stale if the upstream EPA TRI source is unavailable (degraded flag set to true)
- Limit values outside 1–25 may be rejected or clamped

## How this service works

Count of EPA Toxics Release Inventory facilities in a US state or county, open versus closed, with a sample list.

## Output

Returns a JSON object with the total, open, and closed facility counts for the queried state or county, a sample array of open facilities (up to 25) with name, address, city, ZIP, lat/lon, parent company, TRI facility ID, FRS ID, federal facility flag, and open/closed status, plus metadata including the data source URL, as-of date, and any degraded/disclaimer flags.

## 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": [
      "state"
     ],
     "properties": {
      "limit": {
       "type": "integer",
       "description": "Sample open facilities, 1 to 25 (default 10)"
      },
      "state": {
       "type": "string",
       "description": "2-letter state code, e.g. MA"
      },
      "county": {
       "type": "string",
       "description": "County name without 'County', e.g. Suffolk"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "state": {
       "type": [
        "null",
        "string"
       ]
      },
      "county": {
       "type": [
        "null",
        "string"
       ]
      },
      "sample": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "object",
        "properties": {
         "lat": {
          "type": [
           "null",
           "number"
          ]
         },
         "lon": {
          "type": [
           "null",
           "number"
          ]
         },
         "zip": {
          "type": [
           "null",
           "string"
          ]
         },
         "city": {
          "type": [
           "null",
           "string"
          ]
         },
         "name": {
          "type": [
           "null",
           "string"
          ]
         },
         "open": {
          "type": [
           "boolean",
           "null"
          ]
         },
         "frsId": {
          "type": [
           "null",
           "string"
          ]
         },
         "state": {
          "type": [
           "null",
           "string"
          ]
         },
         "county": {
          "type": [
           "null",
           "string"
          ]
         },
         "address": {
          "type": [
           "null",
           "string"
          ]
         },
    
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/environment-screen-epa-tri-facility-count-by-state-or-county-fc6f9f3a/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)