redis_hget

Instructions

Implementation Reference

• src/index.ts:192-192 (handler)

  The handler function for the redis_hget tool. Calls client.hGet(args.key, args.field) and returns the result string.

  redis_hget: async () => { const r = await client.hGet(args.key, args.field); return `HGET 成功。${args.key}.${args.field} = ${r ?? 'null'}`; },

• src/index.ts:173-173 (schema)

  Input schema registration for redis_hget tool. Defines 'key' and 'field' as required string parameters.

  { name: "redis_hget", description: "获取哈希字段。", inputSchema: { type: "object", properties: { key: { type: "string" }, field: { type: "string" } }, required: ["key", "field"] } },

• src/index.ts:165-177 (registration)

  Tool registration listing all tools including redis_hget under ListToolsRequestSchema handler.

  server.setRequestHandler(ListToolsRequestSchema, async () => ({
    tools: [
      { name: "redis_set", description: "设置键值。自动读取项目 .env 配置连接 Redis。", inputSchema: { type: "object", properties: { key: { type: "string" }, value: { type: "string" } }, required: ["key", "value"] } },
      { name: "redis_get", description: "获取键值。", inputSchema: { type: "object", properties: { key: { type: "string" } }, required: ["key"] } },
      { name: "redis_del", description: "删除键。", inputSchema: { type: "object", properties: { key: { type: "string" } }, required: ["key"] } },
      { name: "redis_exists", description: "检查键是否存在。", inputSchema: { type: "object", properties: { key: { type: "string" } }, required: ["key"] } },
      { name: "redis_info", description: "获取连接信息。", inputSchema: { type: "object", properties: {} } },
      { name: "redis_hset", description: "设置哈希字段。", inputSchema: { type: "object", properties: { key: { type: "string" }, field: { type: "string" }, value: { type: "string" } }, required: ["key", "field", "value"] } },
      { name: "redis_hget", description: "获取哈希字段。", inputSchema: { type: "object", properties: { key: { type: "string" }, field: { type: "string" } }, required: ["key", "field"] } },
      { name: "redis_hgetall", description: "获取哈希所有字段。", inputSchema: { type: "object", properties: { key: { type: "string" } }, required: ["key"] } },
      { name: "redis_hdel", description: "删除哈希字段。", inputSchema: { type: "object", properties: { key: { type: "string" }, fields: { type: "array", items: { type: "string" } } }, required: ["key", "fields"] } }
    ]
  }));

• src/index.ts:179-197 (registration)

  CallToolRequestSchema handler that dispatches to redis_hget via the ops record.

  server.setRequestHandler(CallToolRequestSchema, async (request) => {
    try {
      const projectDir = getProjectDir();
      const client = await getClient(projectDir);
      const args = request.params.arguments as any;
  
      const ops: Record<string, () => Promise<string>> = {
        redis_info: async () => `Redis MCP 信息\n项目目录: ${projectDir}\n连接数: ${clientCache.size}`,
        redis_set: async () => { const r = await client.set(args.key, args.value); return `SET 成功。键: ${args.key}`; },
        redis_get: async () => { const r = await client.get(args.key); return `GET 成功。键: ${args.key}, 值: ${r ?? 'null'}`; },
        redis_del: async () => { const r = await client.del(args.key); return `DEL 成功。删除 ${r} 个键`; },
        redis_exists: async () => { const r = await client.exists(args.key); return `EXISTS 成功。键 ${args.key} ${r > 0 ? '存在' : '不存在'}`; },
        redis_hset: async () => { await client.hSet(args.key, args.field, args.value); return `HSET 成功。${args.key}.${args.field} = ${args.value}`; },
        redis_hget: async () => { const r = await client.hGet(args.key, args.field); return `HGET 成功。${args.key}.${args.field} = ${r ?? 'null'}`; },
        redis_hgetall: async () => { const r = await client.hGetAll(args.key); return `HGETALL 成功。${args.key}: ${JSON.stringify(r)}`; },
        redis_hdel: async () => { const r = await client.hDel(args.key, args.fields); return `HDEL 成功。删除 ${r} 个字段`; }
      };
  
      if (!ops[request.params.name]) throw new McpError(ErrorCode.MethodNotFound, `未知工具: ${request.params.name}`);