See who has access to your vehicle — drivers, phone keys, and key fobs.
AI agents call rivian_get_drivers_and_keys to retrieve information from Rivian MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves access control information (drivers, phone keys, key fobs) without modifying any data. It is a straightforward read operation consistent with the server's read-only design. Severity is low because disclosure of authorized access lists has limited direct impact; an AI agent querying this would only learn who has existing access, not gain unauthorized access itself.
From the tool's definition Tool name contains 'get_' prefix and description states 'See who has access' — a pure query operation. Server is explicitly described as 'read-only access to vehicle data' with no mention of modification capabilities.
Attacks that exploit this kind of access
See who has access to your vehicle — drivers, phone keys, and key fobs. It is categorised as a Read tool in the Rivian MCP MCP Server, which means it retrieves data without modifying state.
Register the Rivian MCP server in PolicyLayer and add a rule for rivian_get_drivers_and_keys: 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 Rivian MCP. Nothing to install.
rivian_get_drivers_and_keys 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 rivian_get_drivers_and_keys 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 rivian_get_drivers_and_keys. 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.
rivian_get_drivers_and_keys is provided by the Rivian MCP server (patrickheneise/rivian-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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