Magento 2 Development MCP Server

Instructions

Implementation Reference

• src/index.ts:950-974 (handler)

  The handler function that implements the core logic of the 'db-query' tool by executing a magerun2 db:query command with the provided SQL query and format.

  async ({ query, format = "table" }) => {
    const command = `magerun2 db:query --format=${format} "${query}"`;
    const result = await executeMagerun2Command(command, format === "json");
  
    if (!result.success) {
      return {
        content: [{
          type: "text",
          text: result.error
        }],
        isError: true
      };
    }
  
    const responseText = format === "json"
      ? `Query results (${format} format):\n\n${JSON.stringify(result.data, null, 2)}`
      : `Query results (${format} format):\n\n${result.data}`;
  
    return {
      content: [{
        type: "text",
        text: responseText
      }]
    };
  }

• src/index.ts:943-948 (schema)

  The input schema defining the parameters for the 'db-query' tool: 'query' (SQL string) and 'format' (table/json/csv with default 'table').

    query: z.string()
      .describe("SQL query to execute"),
    format: z.enum(["table", "json", "csv"])
      .default("table")
      .describe("Output format")
  }

• src/index.ts:937-975 (registration)

  The registration of the 'db-query' tool using server.registerTool, including title, description, input schema, and handler reference.

  server.registerTool(
    "db-query",
    {
      title: "Database Query",
      description: "Execute SQL queries directly on Magento 2 database",
      inputSchema: {
        query: z.string()
          .describe("SQL query to execute"),
        format: z.enum(["table", "json", "csv"])
          .default("table")
          .describe("Output format")
      }
    },
    async ({ query, format = "table" }) => {
      const command = `magerun2 db:query --format=${format} "${query}"`;
      const result = await executeMagerun2Command(command, format === "json");
  
      if (!result.success) {
        return {
          content: [{
            type: "text",
            text: result.error
          }],
          isError: true
        };
      }
  
      const responseText = format === "json"
        ? `Query results (${format} format):\n\n${JSON.stringify(result.data, null, 2)}`
        : `Query results (${format} format):\n\n${result.data}`;
  
      return {
        content: [{
          type: "text",
          text: responseText
        }]
      };
    }
  );

• src/index.ts:25-88 (helper)

  The helper function 'executeMagerun2Command' used by the db-query handler (and other tools) to run magerun2 CLI commands safely with JSON parsing, timeouts, and Magento-specific error handling.

  /**
   * Helper function to execute magerun2 commands with consistent error handling
   */
  async function executeMagerun2Command(command: string, parseJson: boolean = false): Promise<{
    success: true;
    data: any;
    rawOutput: string;
  } | {
    success: false;
    error: string;
    isError: true;
  }> {
    try {
      const { stdout, stderr } = await execAsync(command, {
        cwd: process.cwd(),
        timeout: 30000 // 30 second timeout
      });
  
      if (stderr && stderr.trim()) {
        console.error("magerun2 stderr:", stderr);
      }
  
      if (parseJson) {
        try {
          return { success: true, data: JSON.parse(stdout), rawOutput: stdout };
        } catch (parseError) {
          return {
            success: false,
            error: `Error parsing magerun2 JSON output: ${parseError}\n\nRaw output:\n${stdout}`,
            isError: true
          };
        }
      }
  
      return { success: true, data: stdout.trim(), rawOutput: stdout };
  
    } catch (error) {
      const errorMessage = error instanceof Error ? error.message : String(error);
  
      // Check if magerun2 is not found
      if (errorMessage.includes("command not found") || errorMessage.includes("not recognized")) {
        return {
          success: false,
          error: "Error: magerun2 command not found. Please ensure n98-magerun2 is installed and available in your PATH.\n\nInstallation instructions: https://github.com/netz98/n98-magerun2",
          isError: true
        };
      }
  
      // Check if not in Magento directory
      if (errorMessage.includes("not a Magento installation") || errorMessage.includes("app/etc/env.php")) {
        return {
          success: false,
          error: "Error: Current directory does not appear to be a Magento 2 installation. Please run this command from your Magento 2 root directory.",
          isError: true
        };
      }
  
      return {
        success: false,
        error: `Error executing magerun2 command: ${errorMessage}`,
        isError: true
      };
    }
  }