---
updatedAt: 2026-05-07T08:42:21.000Z
---

# Retrieve taxonomy

Get a full list of Noggin's primary and sub categories used when predicting bank transaction categories.

# OpenAPI definition

```json
{
  "openapi": "3.0.0",
  "info": {
    "version": "1.0.0",
    "title": "Noggin API"
  },
  "servers": [
    {
      "url": "https://sandbox.api.nogginhq.com"
    }
  ],
  "paths": {
    "/api/v1/taxonomies": {
      "get": {
        "description": "Get a full list of Noggin's primary and sub categories used when predicting bank transaction categories.",
        "responses": {
          "200": {
            "description": "OK",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "categorisation_model_version": {
                      "type": "string",
                      "example": "v1.0.0",
                      "default": "v1.0.0"
                    },
                    "date_retrieved": {
                      "type": "string",
                      "format": "date-time",
                      "description": "The date the taxonomy was retrieved in the ISO 8601 format (YYYY-MM-DD HH:MM:SS)."
                    },
                    "last_updated": {
                      "type": "string",
                      "format": "date",
                      "description": "The date the taxonomy was last updated in the ISO 8601 format (YYYY-MM-DD)."
                    },
                    "taxonomies": {
                      "type": "array",
                      "items": {
                        "type": "object",
                        "properties": {
                          "primary_category": {
                            "type": "string",
                            "example": "Automotive",
                            "description": "The name of the primary category."
                          },
                          "subcategory": {
                            "type": "array",
                            "example": "Car Dealership",
                            "items": {
                              "type": "string"
                            },
                            "description": "A list of strings of the subcategories that belong to the primary category."
                          }
                        }
                      },
                      "description": "An object array of primary and sub categories."
                    },
                    "taxonomy_version": {
                      "type": "string",
                      "default": "1.0.0",
                      "description": "The version of the taxonomy used on the return."
                    }
                  }
                },
                "examples": {
                  "OK": {
                    "summary": "OK",
                    "value": {
                      "categorisation_version": "v1.0.0",
                      "date_retrieved": "2026-03-02 10:58:18",
                      "last_updated": "2026-01-27",
                      "taxonomies": {
                        "Automotive": [
                          "Car Dealership",
                          "Car Maintenance",
                          "Car Wash",
                          "Motoring Products & Spare Parts"
                        ],
                        "Bank Fees & Charges": [
                          "Account Charge",
                          "Foreign Transaction & Currency Conversion Fees",
                          "Other Fee",
                          "Overdraft Fee"
                        ],
                        "Utilities": [
                          "Gas & Electricity",
                          "SIM & Mobile Contract",
                          "Water",
                          "Wifi & Broadband"
                        ]
                      },
                      "taxonomy_version": "1.0.0"
                    }
                  }
                }
              }
            }
          },
          "401": {
            "description": "Unauthorized",
            "content": {}
          }
        },
        "parameters": [
          {
            "in": "header",
            "name": "x-api-key",
            "schema": {
              "type": "string"
            },
            "required": true,
            "description": "The API key provided for accessing the Categorisation endpoint."
          },
          {
            "in": "query",
            "name": "model_version",
            "schema": {
              "type": "string",
              "enum": [
                "v1.0.0"
              ],
              "default": "v1.0.0"
            },
            "required": true,
            "description": "The version of the categorisation model"
          }
        ],
        "security": [
          {
            "ApiKeyAuth": []
          }
        ],
        "operationId": "get_api-v1-taxonomies",
        "summary": "Retrieve taxonomy"
      }
    }
  },
  "components": {
    "securitySchemes": {
      "ApiKeyAuth": {
        "type": "apiKey",
        "in": "header",
        "name": "x-api-key",
        "description": "The API key required to authenticate with the endpoint."
      }
    }
  },
  "x-readme": {
    "explorer-enabled": true,
    "proxy-enabled": true
  }
}
```