dual_update_me · DUAL MCP Server MCP: Risk & Policy

WHAT IT DOES

What dual_update_me does on DUAL MCP Server

AI agents use dual_update_me 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_update_me needs a policy

This tool creates or modifies data in a reversible manner (Write category). While severity is not critical because the operation is theoretically reversible/correctable and limited to the authenticated user's own wallet, it rates 'high' because unauthorized updates to a wallet in a Web3 context could redirect funds, alter recovery methods, or compromise account control.

From the tool's definition Update the authenticated wallet — modifies wallet state belonging to the authenticated user, which is a reversible write operation. The 'update' verb and 'authenticated wallet' context indicate data mutation rather than read-only access.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

dual_update_me Rate-limited

dual_update_me 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_update_me": {
      "limits": [
        {
          "counter": "dual_update_me_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_update_me

What does the dual_update_me tool do? +

Update the authenticated wallet. 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_update_me? +

Register the DUAL MCP Server MCP server in PolicyLayer and add a rule for dual_update_me: 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_update_me? +

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

Can I rate-limit dual_update_me? +

Yes. Add a rate_limit block to the dual_update_me 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_update_me completely? +

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

dual_update_me 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.