`chemical_usage`

Pack: fracfocus · Connect: https://pipeworx.io/mcp (see Connect below for a single-pack URL)

No MCP client? Call it directly: GET https://gateway.pipeworx.io/v1/tools/chemical_usage for the schema, then POST the same URL with its arguments for the data.

Find wells/jobs that used a given chemical (by CAS number), optionally scoped to a state.

Tool description as the model sees it

Where a chemical has been used in hydraulic fracturing jobs, by CAS number (e.g. “7732-18-5” for water, dashes optional) — optionally scoped to one state. Returns a summary (total ingredient-disclosure rows, distinct wells, distinct states) plus a sample of matching usage records: well, operator, state/county, trade name, purpose, and mass. Only searches this pack’s ingredients coverage window (see ingredients_since in the response), not FracFocus’s full history. A CAS number that is valid but never appears in the loaded window returns found:false, not an empty success.

Parameters

Name	Type	Required	Description
`cas_number`	string	yes	CAS Registry Number, with or without dashes, e.g. “7732-18-5” or “7732185”.
`state`	string	no	US state name to scope the search, e.g. “Texas”. Optional.
`limit`	number	no	Max sample rows, 1-200. Default 50.
`offset`	number	no	Pagination offset. Default 0.

Example call

Arguments

{
  "cas_number": "7732-18-5",
  "state": "Texas",
  "limit": 5
}

curl

curl -X POST https://gateway.pipeworx.io/fracfocus/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"chemical_usage","arguments":{"cas_number":"7732-18-5","state":"Texas","limit":5}}}'

TypeScript (@pipeworx/sdk)

import { Pipeworx } from '@pipeworx/sdk';
const pipeworx = new Pipeworx();

const result = await pipeworx.call('chemical_usage', {
  "cas_number": "7732-18-5",
  "state": "Texas",
  "limit": 5
});

Connect

Add this to your MCP client config — every tool in the catalog, including this one — or use one-click install buttons:

{
  "mcpServers": {
    "pipeworx": {
      "url": "https://pipeworx.io/mcp"
    }
  }
}

Connect to just the fracfocus pack

{
  "mcpServers": {
    "fracfocus": {
      "url": "https://gateway.pipeworx.io/fracfocus/mcp"
    }
  }
}

See Getting Started for client-specific install steps.

chemical_usage