dual_login_guest · DUAL MCP Server MCP: Risk & Policy

WHAT IT DOES

What dual_login_guest does on DUAL MCP Server

AI agents use dual_login_guest to create or update resources in DUAL MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your DUAL MCP Server environment.

WHY IT NEEDS A POLICY

Why dual_login_guest needs a policy

This tool creates a new session (a write/state-creating action) on the DUAL Web3 OS. While it has limited permissions, it establishes an authenticated session that could be used to interact with blockchain infrastructure. The 'no credentials required' aspect raises the blast radius since it could be misused to generate many guest sessions or as a foothold for further actions.

From the tool's definition Create a guest session with limited permissions. No credentials required.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

dual_login_guest Rate-limited

dual_login_guest stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "dual_login_guest": {
      "limits": [
        {
          "counter": "dual_login_guest_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about dual_login_guest

What does the dual_login_guest tool do? +

Create a guest session with limited permissions. No credentials required. It is categorised as a Write tool in the DUAL MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on dual_login_guest? +

Register the DUAL MCP Server MCP server in PolicyLayer and add a rule for dual_login_guest: 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 DUAL MCP Server. Nothing to install.

What risk level is dual_login_guest? +

dual_login_guest is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit dual_login_guest? +

Yes. Add a rate_limit block to the dual_login_guest 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 dual_login_guest completely? +

Set action: deny in the PolicyLayer policy for dual_login_guest. 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 dual_login_guest? +

dual_login_guest is provided by the DUAL MCP Server MCP server (ro-ro-b/dual-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.