assemble · MCPEmulate MCP: Risk & Policy

WHAT IT DOES

What assemble does on MCPEmulate

AI agents invoke assemble to trigger actions in MCPEmulate. 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 assemble needs a policy

The tool name 'assemble' on an emulation server strongly suggests it converts assembly language to machine code, potentially for execution in an emulated environment. Given sibling tools like 'assemble_and_load' and 'create_emulator', this likely generates executable machine code.

From the tool's definition Tool name 'assemble' on a server that 'provides CPU emulation, disassembly, and assembly tools' and 'enables agents to manage isolated emulation sessions'

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

assemble Rate-limited

assemble 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": {
    "assemble": {
      "limits": [
        {
          "counter": "assemble_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 MCPEmulate, so you can run agents against it safely.

FAQ

Questions about assemble

What does the assemble tool do? +

assemble. It is categorised as a Execute tool in the MCPEmulate MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on assemble? +

Register the MCPEmulate MCP server in PolicyLayer and add a rule for assemble: 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 MCPEmulate. Nothing to install.

What risk level is assemble? +

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

Can I rate-limit assemble? +

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

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

assemble is provided by the MCPEmulate MCP server (labguy94/mcpemulate). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.