simulate-file-event

Simulate a file system event for the file-watcher channel

SERVERFrontmcp SOURCEagentfront/frontmcp

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/frontmcp/simulate-file-event.md

WHAT IT DOES

What simulate-file-event does on Frontmcp

AI agents invoke simulate-file-event to trigger actions in Frontmcp. 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.

RISK

Why simulate-file-event is rated High

This tool triggers a simulated file system event, which causes external systems (file-watcher listeners) to react as if a real file event occurred. This is an Execute-category action because it initiates operations whose effects depend on what handlers are registered, potentially causing writes, processing pipelines, or other side effects. It is not simply reading data, nor is it directly destructive or financial.

From the tool's definition 'Simulate a file system event for the file-watcher channel' — triggers an external operation (simulated file system event) that may cause downstream handlers or watchers to react

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs simulate-file-event safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Frontmcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For simulate-file-event, this is the rule to start with:

simulate-file-event Rate-limited

simulate-file-event 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": {
    "simulate-file-event": {
      "limits": [
        {
          "counter": "simulate-file-event_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Frontmcp, apply this rule, and every simulate-file-event call is checked against it from then on.

FAQ

Questions about simulate-file-event

What does the simulate-file-event tool do? +

Simulate a file system event for the file-watcher channel. It is categorised as a Execute tool in the Frontmcp MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on simulate-file-event? +

Register the Front MCP server in PolicyLayer and add a rule for simulate-file-event: 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 Frontmcp. Nothing to install.

What risk level is simulate-file-event? +

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

Can I rate-limit simulate-file-event? +

Yes. Add a rate_limit block to the simulate-file-event 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 simulate-file-event completely? +

Set action: deny in the PolicyLayer policy for simulate-file-event. 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 simulate-file-event? +

simulate-file-event is provided by the Front MCP server (agentfront/frontmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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