aws_whoami
AI agents call aws_whoami to retrieve information from AWS MCP Audit without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves identity information about the current AWS principal (user/role/account) without modifying or executing anything. It is a diagnostic read-only query with minimal blast radius. Even if misused, it only exposes information about who is authenticated, which is non-sensitive metadata. The empty description slightly lowers confidence, but the naming convention and server context make the intent clear.
From the tool's definition Tool name 'aws_whoami' is a standard AWS identity interrogation command (analogous to Unix 'whoami') that returns the identity of the currently authenticated AWS principal.
Attacks that exploit this kind of access
aws_whoami. It is categorised as a Read tool in the AWS MCP Audit MCP Server, which means it retrieves data without modifying state.
Register the AWS MCP Audit MCP server in PolicyLayer and add a rule for aws_whoami: 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 MCP Audit. Nothing to install.
aws_whoami 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 aws_whoami 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 aws_whoami. 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.
aws_whoami is provided by the AWS MCP Audit MCP server (oldcoder01/aws-mcp-audit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
aws_whoami is one line of AWS MCP Audit's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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