respond_to_prompt · Claude Code MCP Controller MCP

WHAT IT DOES

What respond_to_prompt does on Claude Code MCP Controller

AI agents invoke respond_to_prompt to trigger actions in Claude Code MCP Controller. 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 respond_to_prompt needs a policy

This tool sends responses to interactive prompts within an active Claude Code session, effectively driving execution flow of an AI coding agent. An adversary could use it to confirm destructive operations, approve dangerous commands, or manipulate session behavior.

From the tool's definition Respond to an interactive prompt in a Claude-Code session

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

respond_to_prompt Rate-limited

respond_to_prompt 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": {
    "respond_to_prompt": {
      "limits": [
        {
          "counter": "respond_to_prompt_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 Claude Code MCP Controller, so you can run agents against it safely.

FAQ

Questions about respond_to_prompt

What does the respond_to_prompt tool do? +

Respond to an interactive prompt in a Claude-Code session. It is categorised as a Execute tool in the Claude Code MCP Controller MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on respond_to_prompt? +

Register the Claude Code MCP Controller MCP server in PolicyLayer and add a rule for respond_to_prompt: 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 Claude Code MCP Controller. Nothing to install.

What risk level is respond_to_prompt? +

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

Can I rate-limit respond_to_prompt? +

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

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

respond_to_prompt is provided by the Claude Code MCP Controller MCP server (mostafa-drz/claude-code-mcp-controller). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.