{
  "opencollection": "1.0.0",
  "info": {
    "name": "NCBI Entrez E-utilities History Links API",
    "version": "v1.0.0"
  },
  "items": [
    {
      "info": {
        "name": "Links",
        "type": "folder"
      },
      "items": [
        {
          "info": {
            "name": "ELink - Retrieve linked records",
            "type": "http"
          },
          "http": {
            "method": "GET",
            "url": "https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi",
            "params": [
              {
                "name": "dbfrom",
                "value": "",
                "type": "query",
                "description": "Database containing the input UIDs."
              },
              {
                "name": "db",
                "value": "",
                "type": "query",
                "description": "Database to search for linked records. Omit when cmd is llinks or llinkslib."
              },
              {
                "name": "id",
                "value": "",
                "type": "query",
                "description": "Comma-delimited list of UIDs."
              },
              {
                "name": "cmd",
                "value": "",
                "type": "query",
                "description": "ELink command mode."
              },
              {
                "name": "linkname",
                "value": "",
                "type": "query",
                "description": "Name of a specific link to retrieve (e.g., pubmed_pubmed, pubmed_pmc)."
              },
              {
                "name": "term",
                "value": "",
                "type": "query",
                "description": "Entrez query to filter linked UIDs."
              },
              {
                "name": "retmode",
                "value": "",
                "type": "query",
                "description": "Response format (xml or json)."
              },
              {
                "name": "holding",
                "value": "",
                "type": "query",
                "description": "Name of a LinkOut provider to restrict LinkOut links."
              },
              {
                "name": "datetype",
                "value": "",
                "type": "query",
                "description": "Type of date to limit the link results."
              },
              {
                "name": "reldate",
                "value": "",
                "type": "query",
                "description": "Limit results to items published in the last n days."
              },
              {
                "name": "mindate",
                "value": "",
                "type": "query",
                "description": "Minimum date for date range filter."
              },
              {
                "name": "maxdate",
                "value": "",
                "type": "query",
                "description": "Maximum date for date range filter."
              },
              {
                "name": "WebEnv",
                "value": "",
                "type": "query",
                "description": "Web environment string from a previous call."
              },
              {
                "name": "query_key",
                "value": "",
                "type": "query",
                "description": "Integer query key from a previous call."
              },
              {
                "name": "tool",
                "value": "",
                "type": "query",
                "description": "Name of application making the call."
              },
              {
                "name": "email",
                "value": "",
                "type": "query",
                "description": "Contact email address."
              },
              {
                "name": "api_key",
                "value": "",
                "type": "query",
                "description": "API key to enable higher request rate."
              }
            ]
          },
          "docs": "Returns UIDs linked to an input set of UIDs in either the same database or a different Entrez database. Also returns LinkOut URLs for non-Entrez external resources, and checks for the existence of links in either direction."
        }
      ]
    }
  ],
  "bundled": true
}