MCP Client Configuration Server

Instructions

Implementation Reference

• src/index.ts:155-168 (registration)

  Registration of the 'list_servers' tool in the ListTools response, including name, description, and input schema requiring a 'client' parameter.

  {
    name: 'list_servers',
    description: 'List all server names configured in a specific client',
    inputSchema: {
      type: 'object',
      properties: {
        client: {
          type: 'string',
          description: 'Client name (cline, roo_code, windsurf, claude)',
        },
      },
      required: ['client'],
    },
  },

• src/index.ts:268-305 (handler)

  Handler function for the 'list_servers' tool. Validates the client, reads the configuration file (returns empty array if not found), extracts server names from config.mcpServers using Object.keys, and returns them as a JSON string.

  case 'list_servers': {
    const client = validateClient(args.client);
    const configPath = getConfigPath(client);
    
    let config;
    try {
      config = await readConfigFile(configPath);
    } catch (error) {
      if (error instanceof McpError && error.code === ErrorCode.InternalError && error.message.includes('not found')) {
        // Return empty array if configuration file doesn't exist
        return {
          content: [
            {
              type: 'text',
              text: '[]',
            },
          ],
        };
      } else {
        throw error;
      }
    }
    
    // Extract server names from the configuration
    let serverNames: string[] = [];
    if (config.mcpServers && typeof config.mcpServers === 'object') {
      serverNames = Object.keys(config.mcpServers);
    }
    
    return {
      content: [
        {
          type: 'text',
          text: JSON.stringify(serverNames, null, 2),
        },
      ],
    };
  }