greet · YouTube MCP Server MCP: Risk & Policy

WHAT IT DOES

What greet does on YouTube MCP Server

AI agents call greet as a supporting operation in YouTube MCP Server workflows.

WHY IT NEEDS A POLICY

Why greet needs a policy

This tool only produces a greeting message for the user. It has no side effects, does not read or write data, and poses negligible risk of misuse.

From the tool's definition 'Greet the user with a message' — purely outputs a greeting, no data retrieval, modification, execution, or financial action.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

greet Rate-limited

greet 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": {
    "greet": {
      "limits": [
        {
          "counter": "greet_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

SET A RULE FOR THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches YouTube MCP Server, so you can run agents against it safely.

FAQ

Questions about greet

What does the greet tool do? +

Greet the user with a message. It is categorised as a Other tool in the YouTube MCP Server MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on greet? +

Register the YouTube MCP Server MCP server in PolicyLayer and add a rule for greet: 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 YouTube MCP Server. Nothing to install.

What risk level is greet? +

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

Can I rate-limit greet? +

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

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

greet is provided by the YouTube MCP Server MCP server (lauragift21/youtube-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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