hello_gcf

A other tool on the ChukMCP MCP server.

SERVERChukMCPServer SOURCEibm/chuk-mcp-server

Low RISK CLASS

Category Other

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade B, identity unverified Pull the record →

This record as markdown: /tools/ibm-chuk-mcp-server/hello-gcf.md

WHAT IT DOES

What hello_gcf does on ChukMCPServer

AI agents call hello_gcf as a supporting operation in ChukMCPServer workflows.

RISK

Why hello_gcf is rated Low

The tool name suggests it is a simple greeting function (like its siblings 'hello', 'hello_azure', 'hello_lambda') deployed on Google Cloud Functions. Greeting/echo-type tools typically just return a static or parameterized string with no side effects. However, the description is empty, reducing confidence. Given the pattern of sibling tools, this is most likely a Read or Other category operation with minimal risk.

From the tool's definition Tool name is 'hello_gcf' with an empty description. Based on sibling tools like 'hello', 'hello_azure', 'hello_lambda', this appears to be a greeting/hello function targeting Google Cloud Functions.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs hello_gcf safely

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

hello_gcf Rate-limited

hello_gcf 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": {
    "hello_gcf": {
      "limits": [
        {
          "counter": "hello_gcf_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 ChukMCPServer, apply this rule, and every hello_gcf call is checked against it from then on.

FAQ

Questions about hello_gcf

What does the hello_gcf tool do? +

hello_gcf is a other tool on the ChukMCPServer MCP server. It is categorised as a Other tool in the ChukMCPServer MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on hello_gcf? +

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

What risk level is hello_gcf? +

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

Can I rate-limit hello_gcf? +

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

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

hello_gcf is provided by the ChukMCPServer MCP server (ibm/chuk-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on ChukMCPServer, and thousands of servers like it.

This server

All 13 ChukMCPServer tools →

Across the catalogue

hello on Terminal Guardian →hello on Supabase MCP Server - Self-Hosted Edition →hello on Nano Banana → The MCP Attack Database →

Guides

Roll out MCP under one policy →Tool risk categories →MCP tool →