Get current authentication status and user information.
AI agents call acp_whoami to retrieve information from Ambient Code Platform 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 information about the current user's authentication state. It is a read-only operation with no side effects, matching the 'Read' category definition of querying data without side effects. Severity is low because authentication status queries pose minimal risk even if misused by an agent—they cannot damage systems, execute code, or trigger unwanted operations.
From the tool's definition Tool name 'acp_whoami' and description 'Get current authentication status and user information' indicate a query operation that retrieves identity/authentication data without modifying, executing, or deleting anything.
Attacks that exploit this kind of access
Get current authentication status and user information. It is categorised as a Read tool in the Ambient Code Platform MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Ambient Code Platform MCP Server MCP server in PolicyLayer and add a rule for acp_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 Ambient Code Platform MCP Server. Nothing to install.
acp_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 acp_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 acp_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.
acp_whoami is provided by the Ambient Code Platform MCP Server MCP server (jeremyeder/mcp). 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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