USDA Soil Map Units in a Survey Area

usdasoil/list-map-units

Lists the soil map units of one USDA soil survey area: map unit key (mukey), symbol, name, kind (for example consociation or complex) and acres, largest first, up to 100 rows. The mukey is the input of usdasoil/get-map-unit-components. The first row of the answer names the columns; an area symbol with no survey returns an empty object. USDA Natural Resources Conservation Service data, served by Eden Engine; not an official USDA product.

activeper callv1

Price

$0.0026 per call

You pay the price shown. If a call turns out to cost more than its quote, you pay the actual price, capped at twice the quote. No monthly minimum. Top-ups start at $0.50.

Data source

USDA Natural Resources Conservation Service

Soil survey data from the USDA Natural Resources Conservation Service, Soil Data Access service, passed through unmodified. Served by Eden Engine; not an official USDA product.

Use it

Five steps: search, inspect, learn, run, settle. No per-tool setup; your agent reaches this tool through the meta-tools it already has.

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agent

// 1. search: find the tool
omnial_search({ query: "what you need" })

// 2. inspect: price and input schema
omnial_inspect({ tool: "usdasoil/list-map-units" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "usdasoil/list-map-units" })

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "usdasoil/list-map-units", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "usdasoil/list-map-units", input: { /* ... */ } })

// 5. settle: the call is charged when it finishes, nothing to do

Not connected yet? Point your MCP client at https://mcp.eden-engine.com/mcp, then copy a config for your client.

Pricing

Every charge this tool can incur.

Charge	Price
Per call	$0.0026

Updated: Oct 25, 2026

Input and output schemas

Input schema

input_schema.json

{
  "type": "object",
  "required": [
    "areasymbol"
  ],
  "properties": {
    "limit": {
      "type": "integer",
      "default": 25,
      "maximum": 100,
      "minimum": 1,
      "description": "Rows to return, 1 to 100. Default 25."
    },
    "areasymbol": {
      "type": "string",
      "pattern": "^[A-Z]{2}[0-9]{3}$",
      "description": "Soil survey area symbol, two letters and three digits, for example TX299 (Llano County, Texas). Find one with usdasoil/list-survey-areas."
    }
  },
  "additionalProperties": false
}

Output schema

output_schema.json

{
  "type": "object",
  "properties": {
    "Table": {
      "type": "array",
      "items": {
        "type": "array",
        "items": {
          "type": [
            "string",
            "null"
          ]
        }
      },
      "description": "Row 1 holds the column names; the following rows hold the values as text, null where the survey has none."
    }
  },
  "description": "The Soil Data Access table answer: Table is a list of rows, the first row holding the column names; an empty object when nothing matches."
}