Find ECS clusters and services with no activity in the specified period.
AI agents call find_unused_ecs_clusters_and_services to retrieve information from AWS FinOps MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs data retrieval and analysis to identify underutilized ECS resources based on activity metrics over a time period. It has no side effects: it does not create, modify, delete, or execute any infrastructure changes. The blast radius of misuse is minimal—returning incorrect or sensitive resource information could inform further actions, but the tool itself is purely informational.
From the tool's definition Tool name and description indicate it 'Find[s] ECS clusters and services with no activity' — a read-only query operation that retrieves and reports data about unused resources without modifying, executing, or deleting anything.
Attacks that exploit this kind of access
Find ECS clusters and services with no activity in the specified period. It is categorised as a Read tool in the AWS FinOps MCP Server MCP Server, which means it retrieves data without modifying state.
Register the AWS FinOps MCP Server MCP server in PolicyLayer and add a rule for find_unused_ecs_clusters_and_services: 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 AWS FinOps MCP Server. Nothing to install.
find_unused_ecs_clusters_and_services 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 find_unused_ecs_clusters_and_services 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 find_unused_ecs_clusters_and_services. 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.
find_unused_ecs_clusters_and_services is provided by the AWS FinOps MCP Server MCP server (prashantgupta123/aws-pillar-mcp-server). 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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