system-commonFileType

Returns a commonly used file type.

SERVERFaker MCP Server SOURCEkentrino/faker-mcp-server

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade C, identity unverified Pull the record →

This record as markdown: /tools/kentrino-faker-mcp-server/system-commonfiletype.md

WHAT IT DOES

What system-commonFileType does on Faker MCP Server

AI agents call system-commonFileType to retrieve information from Faker MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why system-commonFileType is rated Low

This tool generates and returns fake data (a file type string) using Faker.js. It has no side effects, does not modify any data, and purely produces synthetic output. Lowest possible blast radius.

From the tool's definition Returns a commonly used file type

Risk signalsAdmin/system-level operation

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs system-commonFileType safely

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

system-commonFileType Allowed

system-commonFileType is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "system-commonFileType": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Faker MCP Server, apply this rule, and every system-commonFileType call is checked against it from then on.

FAQ

Questions about system-commonFileType

What does the system-commonFileType tool do? +

Returns a commonly used file type. It is categorised as a Read tool in the Faker MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on system-commonFileType? +

Register the Faker MCP Server MCP server in PolicyLayer and add a rule for system-commonFileType: 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 Faker MCP Server. Nothing to install.

What risk level is system-commonFileType? +

system-commonFileType is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit system-commonFileType? +

Yes. Add a rate_limit block to the system-commonFileType 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 system-commonFileType completely? +

Set action: deny in the PolicyLayer policy for system-commonFileType. 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 system-commonFileType? +

system-commonFileType is provided by the Faker MCP Server MCP server (kentrino/faker-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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