serverless_only_tool

Tool only available in serverless deployment (should be filtered)

SERVERFrontmcp SOURCEagentfront/frontmcp

Low RISK CLASS

Category Other

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/frontmcp/serverless-only-tool.md

WHAT IT DOES

What serverless_only_tool does on Frontmcp

AI agents call serverless_only_tool as a supporting operation in Frontmcp workflows.

RISK

Why serverless_only_tool is rated Low

The description provides no meaningful information about what this tool actually does — it only describes a deployment constraint and hints it 'should be filtered'. There are no action verbs or functional details to classify it into Read, Write, Execute, Destructive, or Financial. Categorized as Other with low confidence due to uninformative description.

From the tool's definition Tool only available in serverless deployment (should be filtered)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs serverless_only_tool 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 serverless_only_tool, this is the rule to start with:

serverless_only_tool Rate-limited

serverless_only_tool gets a rate cap, and everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "serverless_only_tool": {
      "limits": [
        {
          "counter": "serverless_only_tool_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

SET A RULE FOR THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about serverless_only_tool

What does the serverless_only_tool tool do? +

Tool only available in serverless deployment (should be filtered). It is categorised as a Other tool in the Frontmcp MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on serverless_only_tool? +

Register the Front MCP server in PolicyLayer and add a rule for serverless_only_tool: 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 serverless_only_tool? +

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

Can I rate-limit serverless_only_tool? +

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

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

serverless_only_tool 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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