`ssb_no_classification`

Pack: ssb-no · 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/ssb_no_classification for the schema, then POST the same URL with its arguments for the data.

Look up a Statistics Norway (SSB) KLASS classification (code list) and its correspondences, valid at a date or year. Answers e.g. “which KOSTRA group is Bergen in, 2025?” (id 112 = KOSTRA municipality groups, mapped to id 131 = municipalities by default) and lists all municipalities in a county (code_prefix “46” = Vestland) with their KOSTRA group for each of several years. Other ids: 131 municipalities, 104 counties. Without id lists classifications. Unknown id returns found:false. Source: Statistics Norway (SSB), KLASS classification service.

Parameters

Name	Type	Required	Description
`id`	integer,string	no	KLASS classification id, e.g. 112 (KOSTRA groups), 131 (municipalities). Omit to list classifications.
`year`	integer	no	Year; resolves to 1 January of that year. Default: today.
`years`	array	no	Several years in one call (max 10), e.g. [2023,2024,2025].
`items`	integer	no
`date`	string	no	Exact date YYYY-MM-DD (instead of year).
`target_id`	integer,string	no	Target classification for correspondences (default 131 when id is 112). Omit for a plain code list.
`code`	string	no	Match one code on either side, e.g. “4601” (Bergen) or “EKG12”.
`code_prefix`	string	no	Match codes starting with this on either side, e.g. “46” for Vestland municipalities.

Example call

Arguments

{
  "id": 112,
  "code": "4601",
  "year": 2025
}

curl

curl -X POST https://gateway.pipeworx.io/ssb-no/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"ssb_no_classification","arguments":{"id":112,"code":"4601","year":2025}}}'

TypeScript (@pipeworx/sdk)

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

const result = await pipeworx.call('ssb_no_classification', {
  "id": 112,
  "code": "4601",
  "year": 2025
});

More examples

{
  "id": 112,
  "code_prefix": "46",
  "years": [
    2023,
    2024,
    2025
  ]
}

Response shape

Field	Type	Description
`found`	boolean
`id`	string \| null
`message`	string \| null
`count`	number \| null
`source`	string \| null
`data_as_of`	string \| null
`target_classification_id`	string \| null
`classification`	object \| null
`classifications`	array
`results`	array

Full JSON Schema

{
  "type": "object",
  "additionalProperties": true,
  "properties": {
    "found": {
      "type": "boolean"
    },
    "id": {
      "type": [
        "string",
        "null"
      ]
    },
    "message": {
      "type": [
        "string",
        "null"
      ]
    },
    "count": {
      "type": [
        "number",
        "null"
      ]
    },
    "source": {
      "type": [
        "string",
        "null"
      ]
    },
    "data_as_of": {
      "type": [
        "string",
        "null"
      ]
    },
    "target_classification_id": {
      "type": [
        "string",
        "null"
      ]
    },
    "classification": {
      "type": [
        "object",
        "null"
      ],
      "additionalProperties": true,
      "properties": {
        "id": {
          "type": [
            "number",
            "null"
          ]
        },
        "name": {
          "type": [
            "string",
            "null"
          ]
        },
        "type": {
          "type": [
            "string",
            "null"
          ]
        },
        "last_modified": {
          "type": [
            "string",
            "null"
          ]
        }
      }
    },
    "classifications": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": true,
        "properties": {
          "id": {
            "type": [
              "number",
              "null"
            ]
          },
          "name": {
            "type": [
              "string",
              "null"
            ]
          },
          "type": {
            "type": [
              "string",
              "null"
            ]
          },
          "last_modified": {
            "type": [
              "string",
              "null"
            ]
          }
        }
      }
    },
    "results": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": true,
        "properties": {
          "date": {
            "type": [
              "string",
              "null"
            ]
          },
          "found": {
            "type": "boolean"
          },
          "count": {
            "type": [
              "number",
              "null"
            ]
          },
          "message": {
            "type": [
              "string",
              "null"
            ]
          },
          "version": {
            "type": [
              "object",
              "null"
            ],
            "additionalProperties": true,
            "properties": {
              "id": {
                "type": [
                  "number",
                  "null"
                ]
              },
              "name": {
                "type": [
                  "string",
                  "null"
                ]
              },
              "valid_from": {
                "type": [
                  "string",
                  "null"
                ]
              },
              "valid_to": {
                "type": [
                  "string",
                  "null"
                ]
              },
              "last_modified": {
                "type": [
                  "string",
                  "null"
                ]
              }
            }
          },
          "correspondences": {
            "type": "array",
            "items": {
              "type": "object",
              "additionalProperties": true,
              "properties": {
                "source_code": {
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "source_name": {
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "target_code": {
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "target_name": {
                  "type": [
                    "string",
                    "null"
                  ]
                }
              }
            }
          },
          "codes": {
            "type": "array",
            "items": {
              "type": "object",
              "additionalProperties": true,
              "properties": {
                "code": {
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "name": {
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "level": {
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "parent_code": {
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "notes": {
                  "type": [
                    "string",
                    "null"
                  ]
                }
              }
            }
          }
        }
      }
    }
  }
}

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 ssb-no pack

{
  "mcpServers": {
    "ssb-no": {
      "url": "https://gateway.pipeworx.io/ssb-no/mcp"
    }
  }
}

See Getting Started for client-specific install steps.

ssb_no_classification