MCP Environment & Installation Manager

Implementation Reference

• src/tools/installation-tools.ts:196-231 (handler)

  The async handler function for the 'configure-installation' tool. Updates installation configuration (directory, package manager, auto-localize) using configService and returns updated settings.

    async ({ installationDir, preferredPackageManager, autoLocalize }, extra) => {
      const config = configService.getInstallationConfig();
      
      const updates = {
        packageManager: {
          ...config.packageManager
        }
      };
      
      if (installationDir !== undefined) {
        updates.packageManager.installationDir = installationDir;
      }
      
      if (preferredPackageManager !== undefined) {
        updates.packageManager.preferredPackageManager = preferredPackageManager;
      }
      
      if (autoLocalize !== undefined) {
        updates.packageManager.autoLocalize = autoLocalize;
      }
      
      const updatedConfig = await configService.updateInstallationConfig(updates);
      
      return {
        content: [
          {
            type: "text",
            text: JSON.stringify({
              success: true,
              packageManager: updatedConfig.packageManager
            }, null, 2)
          }
        ]
      };
    }
  );

• src/tools/installation-tools.ts:191-195 (schema)

  Zod input schema defining optional parameters: installationDir (string), preferredPackageManager (enum: npm/yarn/pnpm), autoLocalize (boolean).

  {
    installationDir: z.string().optional().describe("Directory for installing packages"),
    preferredPackageManager: z.enum(['npm', 'yarn', 'pnpm']).optional().describe("Preferred package manager"),
    autoLocalize: z.boolean().optional().describe("Automatically localize packages")
  },

• src/tools/installation-tools.ts:189-231 (registration)

  server.tool registration of the 'configure-installation' tool, including name, input schema, and inline handler function within registerInstallationTools.

  server.tool(
    "configure-installation",
    {
      installationDir: z.string().optional().describe("Directory for installing packages"),
      preferredPackageManager: z.enum(['npm', 'yarn', 'pnpm']).optional().describe("Preferred package manager"),
      autoLocalize: z.boolean().optional().describe("Automatically localize packages")
    },
    async ({ installationDir, preferredPackageManager, autoLocalize }, extra) => {
      const config = configService.getInstallationConfig();
      
      const updates = {
        packageManager: {
          ...config.packageManager
        }
      };
      
      if (installationDir !== undefined) {
        updates.packageManager.installationDir = installationDir;
      }
      
      if (preferredPackageManager !== undefined) {
        updates.packageManager.preferredPackageManager = preferredPackageManager;
      }
      
      if (autoLocalize !== undefined) {
        updates.packageManager.autoLocalize = autoLocalize;
      }
      
      const updatedConfig = await configService.updateInstallationConfig(updates);
      
      return {
        content: [
          {
            type: "text",
            text: JSON.stringify({
              success: true,
              packageManager: updatedConfig.packageManager
            }, null, 2)
          }
        ]
      };
    }
  );