get_policies_for_role
AI agents call get_policies_for_role to retrieve information from AWS IoT SiteWise 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 policy information for a given IAM role. It queries existing data (policies) and has no side effects—no data is created, modified, deleted, or financial operations triggered. While the empty description introduces some uncertainty, the name strongly suggests a read-only operation typical of IAM role auditing or introspection workflows.
From the tool's definition Tool name 'get_policies_for_role' indicates a query or retrieval operation; it fetches policies associated with an IAM role without modifying state. The description is empty, but the naming pattern is consistent with read-only policy inspection operations.
Attacks that exploit this kind of access
get_policies_for_role. It is categorised as a Read tool in the AWS IoT SiteWise MCP Server MCP Server, which means it retrieves data without modifying state.
Register the AWS IoT SiteWise MCP Server MCP server in PolicyLayer and add a rule for get_policies_for_role: 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 IoT SiteWise MCP Server. Nothing to install.
get_policies_for_role 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 get_policies_for_role 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 get_policies_for_role. 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.
get_policies_for_role is provided by the AWS IoT SiteWise MCP Server MCP server (awslabs.aws-iot-sitewise-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.