xctrace_symbolicate · Xctools MCP: Risk & Policy

WHAT IT DOES

What xctrace_symbolicate does on Xctools

AI agents invoke xctrace_symbolicate to trigger actions in Xctools. 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 xctrace_symbolicate needs a policy

The tool appears to invoke xctrace to symbolicate trace files, which is an execution of an external development tool. Symbolication is generally a read-like analysis operation but runs an external process. With no description to confirm, confidence is low. Severity is medium as misuse could process arbitrary trace files or paths.

From the tool's definition Tool name 'xctrace_symbolicate' suggests running xctrace for symbolication; description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

xctrace_symbolicate Rate-limited

xctrace_symbolicate 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": {
    "xctrace_symbolicate": {
      "limits": [
        {
          "counter": "xctrace_symbolicate_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 Xctools, so you can run agents against it safely.

FAQ

Questions about xctrace_symbolicate

What does the xctrace_symbolicate tool do? +

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

How do I enforce a policy on xctrace_symbolicate? +

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

What risk level is xctrace_symbolicate? +

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

Can I rate-limit xctrace_symbolicate? +

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

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

xctrace_symbolicate is provided by the Xctools MCP server (nzrsky/xctools-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.