update_cocktail · Bar Assistant MCP Server MCP

WHAT IT DOES

What update_cocktail does on Bar Assistant MCP Server

AI agents use update_cocktail to create or update resources in Bar Assistant MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Bar Assistant MCP Server environment.

WHY IT NEEDS A POLICY

Why update_cocktail needs a policy

This tool modifies existing cocktail data (name, instructions, ingredients, details) but does not delete data or trigger external operations. The changes are reversible—a user can update a cocktail again to correct mistakes or restore previous values. The blast radius is confined to the bar inventory system with no financial, destructive, or execution implications. This is a clear Write operation.

From the tool's definition Tool description states 'Update an existing cocktail recipe' and 'modify the name, instructions, ingredients, or other details of a cocktail.' The verb 'update' and 'modify' indicate reversible data changes.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_cocktail Rate-limited

update_cocktail stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "update_cocktail": {
      "limits": [
        {
          "counter": "update_cocktail_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about update_cocktail

What does the update_cocktail tool do? +

Update an existing cocktail recipe. Use this to modify the name, instructions, ingredients, or other details of a cocktail. It is categorised as a Write tool in the Bar Assistant MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_cocktail? +

Register the Bar Assistant MCP Server MCP server in PolicyLayer and add a rule for update_cocktail: 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 Bar Assistant MCP Server. Nothing to install.

What risk level is update_cocktail? +

update_cocktail is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit update_cocktail? +

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

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

update_cocktail is provided by the Bar Assistant MCP Server MCP server (the-real-py/bar-assistant-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.