dual_create_action_type · DUAL MCP Server MCP: Risk & Policy

WHAT IT DOES

What dual_create_action_type does on DUAL MCP Server

AI agents use dual_create_action_type 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_create_action_type needs a policy

This tool creates and persists new action type definitions in the blockchain system, which is a reversible data modification. It does not delete data (not Destructive), does not move funds (not Financial), and does not execute arbitrary actions (not Execute).

From the tool's definition Tool name 'dual_create_action_type' and description 'Register a new action type' indicate creation of new configuration/schema objects that persist in the system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

dual_create_action_type Rate-limited

dual_create_action_type 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_create_action_type": {
      "limits": [
        {
          "counter": "dual_create_action_type_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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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_create_action_type

What does the dual_create_action_type tool do? +

Register a new action type with an optional JSON schema for payload validation. 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_create_action_type? +

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

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

Can I rate-limit dual_create_action_type? +

Yes. Add a rate_limit block to the dual_create_action_type 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_create_action_type completely? +

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

dual_create_action_type 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.