Macrostrat

live Data

Macrostrat MCP — geologic map / column / unit data for North America and beyond.

3 tools
0ms auth
free tier 50 calls/day

Tools

find_units

Find geologic rock units from Macrostrat by location + age, by stratigraphic name, or by lithology.

No parameters required.

▶ Try it
find_columns

List Macrostrat stratigraphic columns near a geographic point. Provide lat and lng (decimal degrees).

No parameters required.

▶ Try it
define_lithology

Look up Macrostrat lithology definitions. Provide a lith name (e.g. "granite", "limestone") to match, or omit to list all lithologies (capped at 50).

No parameters required.

▶ Try it

Test with curl

The gateway speaks JSON-RPC 2.0 over HTTP POST. You can test any pack directly from the terminal.

List available tools
bash 
curl -X POST https://gateway.pipeworx.io/macrostrat/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'
Call a tool
bash 
curl -X POST https://gateway.pipeworx.io/macrostrat/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"find_units","arguments":{}}}'

Use with the SDK

Install @pipeworx/sdk to call tools from any TypeScript/Node project.

TypeScript 
import { Pipeworx } from '@pipeworx/sdk';
const px = new Pipeworx();
const result = await px.call("find_units", {});
ask_pipeworx 
// Or ask in plain English:
const answer = await px.ask("macrostrat mcp — geologic map / column / unit data for north america and beyond");