Geologic Units Beneath a Point (Macrostrat)

macrostrat/geologic-units-at-point

Geologic units beneath a latitude and longitude from the Macrostrat database: for each unit its name, group, formation and member, top and bottom age in millions of years, minimum and maximum thickness, whether it outcrops at the surface or lies in the subsurface, and the count of Paleobiology Database fossil collections and occurrences matched to it. Covers the Macrostrat column for the point; an empty list means nothing matched. Macrostrat data under CC BY 4.0, passed through and served by Eden Engine; not an official Macrostrat 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 $5.

Data source

Macrostrat

Data from Macrostrat (macrostrat.org), licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Credit Macrostrat as the data source; the response wrapper is removed and nothing else is changed. Served by Eden Engine; not an official Macrostrat 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: "macrostrat/geologic-units-at-point" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "macrostrat/geologic-units-at-point" })

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "macrostrat/geologic-units-at-point", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "macrostrat/geologic-units-at-point", 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 20, 2026

Input and output schemas

Input schema

input_schema.json

{
  "type": "object",
  "required": [
    "lat",
    "lng"
  ],
  "properties": {
    "lat": {
      "type": "number",
      "maximum": 90,
      "minimum": -90,
      "description": "Latitude in decimal degrees, north positive (for example 43)."
    },
    "lng": {
      "type": "number",
      "maximum": 180,
      "minimum": -180,
      "description": "Longitude in decimal degrees, west negative (for example -89)."
    }
  },
  "additionalProperties": false
}

Output schema

output_schema.json

{
  "type": "object",
  "required": [
    "data"
  ],
  "properties": {
    "v": {
      "type": "integer",
      "description": "Macrostrat API version."
    },
    "data": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "Fm": {
            "type": "string",
            "description": "Formation name; empty when none."
          },
          "Gp": {
            "type": "string",
            "description": "Group name; empty when none."
          },
          "Mbr": {
            "type": "string",
            "description": "Member name; empty when none."
          },
          "SGp": {
            "type": "string",
            "description": "Supergroup name; empty when none."
          },
          "b_age": {
            "type": "number",
            "description": "Bottom (older) age of the unit, millions of years before present."
          },
          "t_age": {
            "type": "number",
            "description": "Top (younger) age of the unit, millions of years before present."
          },
          "col_id": {
            "type": "integer",
            "description": "Id of the Macrostrat column."
          },
          "outcrop": {
            "type": "string",
            "description": "Where the unit occurs, for example both or subsurface."
          },
          "unit_id": {
            "type": "integer",
            "description": "Macrostrat unit id."
          },
          "col_area": {
            "type": "number",
            "description": "Area of the column."
          },
          "max_thick": {
            "type": "number",
            "description": "Maximum thickness of the unit."
          },
          "min_thick": {
            "type": "number",
            "description": "Minimum thickness of the unit."
          },
          "unit_name": {
            "type": "string"
          },
          "project_id": {
            "type": "integer"
          },
          "section_id": {
            "type": "integer",
            "description": "Id of the gap-bound package of units."
          },
          "strat_name_id": {
            "type": [
              "integer",
              "null"
            ],
            "description": "Stratigraphic name id; null for an unnamed unit."
          },
          "pbdb_collections": {
            "type": "integer",
            "description": "Paleobiology Database fossil collections matched to the unit."
          },
          "pbdb_occurrences": {
            "type": "integer",
            "description": "Paleobiology Database fossil occurrences matched to the unit."
          }
        },
        "additionalProperties": true
      },
      "description": "The units for the point. Empty when nothing matched."
    },
    "license": {
      "type": "string",
      "description": "The data licence, CC-BY 4.0."
    }
  },
  "description": "Macrostrat's response with its outer wrapper removed.",
  "additionalProperties": true
}