查询数据地图数据表字段列表
AI agents call ListColumns to retrieve information from Alibabacloud Dataworks without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
Name | string | — | 名称，模糊匹配 |
Order | string | — | 排序方向，默认为Asc，枚举值，当前支持-Asc升序-Desc降序 |
SortBy | string | — | 排序字段，默认为Position，枚举值，当前支持-Name名称-Position位置 |
Comment | string | — | 注释，模糊匹配 |
TableId | string | Yes | 数据表ID，可参考[元数据实体相关概念说明](~~2880092~~) |
PageSize | number | — | 分页大小，默认为10，最大为100 |
PageNumber | number | — | 分页页码，默认为1 |
Parameters from the server's own tool schema.
Even though ListColumns only reads data, uncontrolled read access leaks sensitive information and racks up API costs — an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Attacks that exploit this kind of access
查询数据地图数据表字段列表. It is categorised as a Read tool in the Alibabacloud Dataworks MCP Server, which means it retrieves data without modifying state.
ListColumns accepts 7 parameters: Name, Order, SortBy, Comment, TableId, PageSize, PageNumber. Required: TableId. The full parameter table on this page comes from the server's own tool schema.
Register the Alibabacloud Dataworks MCP server in PolicyLayer and add a rule for ListColumns: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Alibabacloud Dataworks. Nothing to install.
ListColumns is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the ListColumns rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for ListColumns. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
ListColumns is provided by the Alibabacloud Dataworks MCP server (alibabacloud-dataworks-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.