# Land Survey Screening – Wetlands Check

> Land Survey Screening – Wetlands Check is a paid API for AI agents from land-survey.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).

Checks whether a US latitude/longitude point falls within a mapped wetland using the National Wetlands Inventory, returning wetland type, size in acres, and a permitting heads-up.

## Facts

- Endpoint: GET https://land-survey.x402tookit.com/wetlands-check?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/land-survey-screening-wetlands-check-85cad469
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_p2SKqbZZ9D-PWemjxjuRK

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 land-survey-screening-wetlands-check-85cad469
```

Example prompt: Can you check if the coordinates 38.9072° N, 77.0369° W are inside a mapped wetland — I need to know the NWI wetland type and acreage before I apply for a building permit?

## When to prefer this

Use this endpoint when you need a fast, cheap, authoritative wetlands screen for a specific US point before site development, permitting, land acquisition, or environmental due diligence. It is the right choice when you need NWI-sourced wetland type and acreage rather than a broad flood or regulatory risk overview. Prefer it over the combined first-look screen endpoint when you specifically need only wetlands data without elevation or flood zone information.

## Known failure modes

- Coordinate outside the US — NWI only covers US territory, may return an error or null result
- Point in an area with incomplete NWI mapping — returns null wetland data with a 'notChecked' indicator
- Invalid or out-of-range lat/lon values — request rejected with validation error
- NWI upstream service temporarily unavailable — degraded flag set to true or timeout error
- Coordinate in open water or offshore — no wetland polygon match returned

## How this service works

Is a US point inside a mapped wetland? National Wetlands Inventory type and size, as a permitting heads-up.

## Output

Returns a verdict (wetland present or not), the NWI wetland type label and classification code, size in acres, number of overlapping NWI features, the data source URL, a timestamp of data currency, a plain-language summary, and a legal disclaimer about permitting implications. May include a 'degraded' flag if upstream data quality is reduced.

## 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"
     ],
     "properties": {
      "lat": {
       "type": "number",
       "description": "Latitude"
      },
      "lon": {
       "type": "number",
       "description": "Longitude"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "lat": {
       "type": [
        "null",
        "number"
       ]
      },
      "lon": {
       "type": [
        "null",
        "number"
       ]
      },
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "code": {
       "type": [
        "null",
        "string"
       ]
      },
      "type": {
       "type": [
        "null",
        "string"
       ]
      },
      "acres": {
       "type": [
        "null",
        "number"
       ]
      },
      "source": {
       "type": [
        "null",
        "string"
       ]
      },
      "reasons": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "summary": {
       "type": [
        "null",
        "string"
       ]
      },
      "verdict": {
       "type": [
        "null",
        "string"
       ]
      },
      "degraded": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "sourceUrl": {
       "type": [
        "null",
        "string"
       ]
      },
      "disclaimer": {
       "type": [
        "null",
        "string"
       ]
      },
      "notChecked": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "overlappingFeatures": {
       "type": [
        "null",
        "number"
       ]
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/land-survey-screening-wetlands-check-85cad469/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from land-survey.x402tookit.com](https://www.zero.xyz/host/land-survey.x402tookit.com/llms.txt)