`stable_phases`

Pack: oqmd · 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/stable_phases for the schema, then POST the same URL with its arguments for the data.

List the ground-state (on-hull) phases of a chemical system — the thermodynamically stable compounds in OQMD for a given set of elements. e.g. “Fe-O” returns FeO, Fe2O3, Fe3O4. Restricts to materials made ONLY of the given elements with stability <= ~0 (on the convex hull). Keyless.

Parameters

Name	Type	Required	Description
`elements`	string	yes	A chemical system as dash- or comma-separated elements, e.g. “Fe-O”, “Li-Fe-O”, “Al,O”.
`limit`	number	no	Max phases, default 15, max 30.

Example call

Arguments

{
  "elements": "Fe-O"
}

curl

curl -X POST https://gateway.pipeworx.io/oqmd/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"stable_phases","arguments":{"elements":"Fe-O"}}}'

TypeScript (@pipeworx/sdk)

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

const result = await pipeworx.call('stable_phases', {
  "elements": "Fe-O"
});

More examples

{
  "elements": "Li-Fe-O",
  "limit": 20
}

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 oqmd pack

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

See Getting Started for client-specific install steps.

stable_phases