`term_ancestors`

Pack: ebi-ols · 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/term_ancestors for the schema, then POST the same URL with its arguments for the data.

Transitive ancestors of a term.

Parameters

Name	Type	Required	Description
`ontology`	string	yes
`iri`	string	yes

Example call

Arguments

{
  "ontology": "efo",
  "iri": "http://www.ebi.ac.uk/efo/EFO_0000408"
}

curl

curl -X POST https://gateway.pipeworx.io/ebi-ols/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"term_ancestors","arguments":{"ontology":"efo","iri":"http://www.ebi.ac.uk/efo/EFO_0000408"}}}'

TypeScript (@pipeworx/sdk)

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

const result = await pipeworx.call('term_ancestors', {
  "ontology": "efo",
  "iri": "http://www.ebi.ac.uk/efo/EFO_0000408"
});

Response shape

Field	Type	Description
`_links`	object
`page`	object

Full JSON Schema

{
  "type": "object",
  "properties": {
    "_links": {
      "type": "object",
      "properties": {
        "self": {
          "type": "object",
          "properties": {
            "href": {
              "type": "string"
            }
          }
        }
      }
    },
    "page": {
      "type": "object",
      "properties": {
        "size": {
          "type": "number"
        },
        "totalElements": {
          "type": "number"
        },
        "totalPages": {
          "type": "number"
        },
        "number": {
          "type": "number"
        }
      }
    }
  },
  "description": "Transitive closure of ancestor terms"
}

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 ebi-ols pack

{
  "mcpServers": {
    "ebi-ols": {
      "url": "https://gateway.pipeworx.io/ebi-ols/mcp"
    }
  }
}

See Getting Started for client-specific install steps.

term_ancestors