Printify MCP Server

Implementation Reference

• src/services/printify-blueprints.ts:65-107 (handler)

  Main handler function implementing the get_blueprint tool logic: fetches blueprint from Printify API, handles errors, formats MCP-compatible response.

  export async function getBlueprint(
    printifyClient: PrintifyAPI,
    blueprintId: string
  ) {
    try {
      // Validate client is initialized
      if (!printifyClient) {
        throw new Error('Printify API client is not initialized. The PRINTIFY_API_KEY environment variable may not be set.');
      }
      
      // Get blueprint
      const blueprint = await printifyClient.getBlueprint(blueprintId);
      
      return {
        success: true,
        blueprint,
        response: {
          content: [{
            type: "text",
            text: `Blueprint details for ID ${blueprintId}:\n\n${JSON.stringify(blueprint, null, 2)}`
          }]
        }
      };
    } catch (error: any) {
      console.error('Error getting blueprint:', error);
      
      return {
        success: false,
        error,
        errorResponse: formatErrorResponse(
          error,
          'Get Blueprint',
          {
            BlueprintId: blueprintId
          },
          [
            'Check that the blueprint ID is valid',
            'Check that your Printify API key is valid',
            'Ensure your Printify account is properly connected'
          ]
        )
      };
    }

• src/index.ts:459-489 (registration)

  MCP tool registration for 'get_blueprint': defines schema, thin wrapper handler that calls the service function.

  server.tool(
    "get_blueprint",
    {
      blueprintId: z.string().describe("Blueprint ID")
    },
    async ({ blueprintId }): Promise<{ content: any[], isError?: boolean }> => {
      // Import the printify blueprints service
      const { getBlueprint } = await import('./services/printify-blueprints.js');
  
      // Check if client is initialized
      if (!printifyClient) {
        return {
          content: [{
            type: "text",
            text: "Printify API client is not initialized. The PRINTIFY_API_KEY environment variable may not be set."
          }],
          isError: true
        };
      }
  
      // Call the service
      const result = await getBlueprint(printifyClient, blueprintId);
  
      // Return the result
      if (result.success) {
        return result.response as { content: any[], isError?: boolean };
      } else {
        return result.errorResponse as { content: any[], isError: boolean };
      }
    }
  );

• src/index.ts:461-463 (schema)

  Zod input schema for the get_blueprint tool: requires blueprintId string.

  {
    blueprintId: z.string().describe("Blueprint ID")
  },

• src/printify-api.ts:416-424 (helper)

  PrintifyAPI helper method that wraps the Printify SDK catalog.getBlueprint call.

  async getBlueprint(blueprintId: string) {
    try {
      // Use the catalog.getBlueprint method
      return await this.client.catalog.getBlueprint(blueprintId);
    } catch (error) {
      console.error(`Error fetching blueprint ${blueprintId}:`, error);
      throw error;
    }
  }