reload_tools · TermPipe MCP: Risk & Policy

WHAT IT DOES

What reload_tools does on TermPipe MCP

AI agents invoke reload_tools to trigger actions in TermPipe 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 reload_tools needs a policy

Hot-reloading tool modules executes code at runtime, dynamically replacing active tool definitions. In the context of a server providing direct terminal access, this could be exploited to inject or replace tool behavior mid-session. The effect is not simply data modification (Write) but execution of module loading/initialization code that changes system behavior.

From the tool's definition Hot-reload all tool modules

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

reload_tools Rate-limited

reload_tools 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": {
    "reload_tools": {
      "limits": [
        {
          "counter": "reload_tools_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 TermPipe MCP, so you can run agents against it safely.

FAQ

Questions about reload_tools

What does the reload_tools tool do? +

Hot-reload all tool modules. It is categorised as a Execute tool in the TermPipe 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 reload_tools? +

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

What risk level is reload_tools? +

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

Can I rate-limit reload_tools? +

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

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

reload_tools is provided by the TermPipe MCP server (wbind-core/termpipe-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.