Find SNS topics with no subscriptions or no messages published.
AI agents call find_unused_sns_topics 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 retrieves and lists SNS topics based on usage patterns. It performs no modifications, deletions, executions, or financial transactions. It is purely informational, used for cost optimization analysis and resource discovery. The blast radius of misuse is minimal—an agent could only retrieve information about SNS topic utilization, which poses no risk to infrastructure integrity or data security.
From the tool's definition Tool name 'find_unused_sns_topics' and description indicate it queries and identifies SNS topics meeting specific criteria (no subscriptions or no messages).
Attacks that exploit this kind of access
Find SNS topics with no subscriptions or no messages published. 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_sns_topics: 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_sns_topics 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_sns_topics 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_sns_topics. 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_sns_topics 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.
Teams ship this data inside their own products. See what a licence covers →