generate_cost_report

THE RISK

Low Risk

Why generate_cost_report needs a policy

The tool name 'generate_cost_report' suggests it retrieves or generates a report on costs, which is a Read operation. However, the empty description lowers confidence significantly. It could potentially involve financial data but likely just queries/reads cost data rather than moving money. Severity is medium because cost/financial data is sensitive even if only read.

From the tool's definition Tool name: generate_cost_report; description is empty

Documented attack patterns abuse exactly the kind of access generate_cost_report gives an agent:

POLICY

How to control generate_cost_report

PolicyLayer is an MCP gateway — it sits between your AI agents and Amazon ECS MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for generate_cost_report:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "generate_cost_report": {}
  }
}

generate_cost_report is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Amazon ECS MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

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Go deeper

Roll out MCP under one policy → Per-person scoped tokens, one central policy, and full audit across every server your team connects.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →
PolicyLayer vs alternatives → How deterministic, per-call MCP policy compares with gateways, identity layers, and authorisation platforms.

FAQ

Questions about generate_cost_report

What does the generate_cost_report tool do? +

generate_cost_report. It is categorised as a Read tool in the Amazon ECS MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on generate_cost_report? +

Register the Amazon ECS MCP Server MCP server in PolicyLayer and add a rule for generate_cost_report: 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 Amazon ECS MCP Server. Nothing to install.

What risk level is generate_cost_report? +

generate_cost_report is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit generate_cost_report? +

Yes. Add a rate_limit block to the generate_cost_report 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.

How do I block generate_cost_report completely? +

Set action: deny in the PolicyLayer policy for generate_cost_report. 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.

What MCP server provides generate_cost_report? +

generate_cost_report is provided by the Amazon ECS MCP Server MCP server (awslabs.ecs-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Amazon ECS MCP Server tool call.

Start from Amazon ECS MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →