Norwegian Business Registry MCP Server

Instructions

Implementation Reference

• src/brreg-mcp-server.ts:158-160 (handler)

  The core handler function implementing the logic for the 'get_icnpo_categories' tool by making an API request to the Brreg voluntary organizations registry endpoint.

  async getIcnpoCategories(params: { spraak?: string } = {}) {
    return this.makeRequest('/frivillighetsregisteret/api/icnpo-kategorier', params);
  }

• src/brreg-mcp-server.ts:385-394 (registration)

  Tool registration in the ListTools handler, defining the tool's name, description, and input schema.

  {
    name: "get_icnpo_categories",
    description: "Get ICNPO (International Classification of Non-Profit Organisation) categories",
    inputSchema: {
      type: "object",
      properties: {
        spraak: { type: "string", description: "Language for descriptions (e.g., 'NOB')" }
      }
    }
  }

• src/brreg-mcp-server.ts:388-393 (schema)

  JSON schema defining the input parameters for the tool (optional 'spraak' language parameter).

  inputSchema: {
    type: "object",
    properties: {
      spraak: { type: "string", description: "Language for descriptions (e.g., 'NOB')" }
    }
  }

• src/brreg-mcp-server.ts:562-571 (handler)

  Dispatch handler in the CallToolRequestSchema that invokes the tool's handler and formats the response as text content.

  case "get_icnpo_categories":
    const icnpoCategories = await apiClient.getIcnpoCategories(request.params.arguments as any);
    return {
      content: [
        {
          type: "text",
          text: JSON.stringify(icnpoCategories, null, 2),
        },
      ],
    };