rivian_submit_otp · Rivian MCP: Risk & Policy

WHAT IT DOES

What rivian_submit_otp does on Rivian MCP

AI agents invoke rivian_submit_otp to trigger actions in Rivian MCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why rivian_submit_otp needs a policy

Submitting an OTP completes an authentication flow, establishing a session/token with external Rivian systems. This is an external operation whose effects (granting account access) depend on the provided code. It goes beyond a simple read or write — it executes an authentication action that enables all subsequent privileged operations.

From the tool's definition 'Complete Rivian sign-in with the verification code' — this triggers an authentication/session-creation operation, not merely reading or writing data

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

rivian_submit_otp Rate-limited

rivian_submit_otp stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "rivian_submit_otp": {
      "limits": [
        {
          "counter": "rivian_submit_otp_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Rivian MCP, so you can run agents against it safely.

FAQ

Questions about rivian_submit_otp

What does the rivian_submit_otp tool do? +

Complete Rivian sign-in with the verification code sent to your phone or email. It is categorised as a Execute tool in the Rivian MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on rivian_submit_otp? +

Register the Rivian MCP server in PolicyLayer and add a rule for rivian_submit_otp: 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.

What risk level is rivian_submit_otp? +

rivian_submit_otp is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit rivian_submit_otp? +

Yes. Add a rate_limit block to the rivian_submit_otp 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.

How do I block rivian_submit_otp completely? +

Set action: deny in the PolicyLayer policy for rivian_submit_otp. 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.

What MCP server provides rivian_submit_otp? +

rivian_submit_otp 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.