generate_trace_guard

THE RISK

Medium Risk

Why generate_trace_guard needs a policy

This tool creates (generates) configuration data that will be written to settings, making it a Write operation rather than a Read operation. It's reversible—settings can be modified or reverted. It does not execute arbitrary code, delete data, or move money.

From the tool's definition Tool description states it 'Outputs JSON ready to add to settings', indicating it generates configuration data intended for application to system settings.

Documented attack patterns abuse exactly the kind of access generate_trace_guard gives an agent:

POLICY

How to control generate_trace_guard

PolicyLayer is an MCP gateway — it sits between your AI agents and Claude Code Toolkit, and nothing reaches the server without passing your rules. This is the rule we recommend for generate_trace_guard:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "generate_trace_guard": {
      "limits": [
        {
          "counter": "generate_trace_guard_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

generate_trace_guard 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.

Create a free account and register Claude Code Toolkit — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

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All 40 Claude Code Toolkit tools →

Write tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about generate_trace_guard

What does the generate_trace_guard tool do? +

Generate hook configurations for ongoing trace prevention. Outputs JSON ready to add to settings. It is categorised as a Write tool in the Claude Code Toolkit MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on generate_trace_guard? +

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

What risk level is generate_trace_guard? +

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

Can I rate-limit generate_trace_guard? +

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

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

generate_trace_guard is provided by the Claude Code Toolkit MCP server (asifkibria/claude-code-toolkit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Claude Code Toolkit tool call.

Start from Claude Code Toolkit, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →