查询ECS实例信息
AI agents call describe_ecs_instances to retrieve information from Alibaba Cloud Operations MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves ECS instance metadata and status information without modifying, executing, or deleting any resources. It has no side effects and produces only informational output about existing cloud infrastructure. The blast radius of misuse is minimal—an attacker gains visibility into instance configurations but cannot directly compromise, modify, or destroy resources.
From the tool's definition Tool name 'describe_ecs_instances' and description '查询ECS实例信息' (query ECS instance information) indicate a retrieval operation.
Attacks that exploit this kind of access
查询ECS实例信息. It is categorised as a Read tool in the Alibaba Cloud Operations MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Alibaba Cloud Operations MCP Server MCP server in PolicyLayer and add a rule for describe_ecs_instances: 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 Alibaba Cloud Operations MCP Server. Nothing to install.
describe_ecs_instances 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 describe_ecs_instances 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 describe_ecs_instances. 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.
describe_ecs_instances is provided by the Alibaba Cloud Operations MCP Server MCP server (radiumgu/alicloud-ops-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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