rate_recipe · CoupleHub MCP Server MCP: Risk & Policy

WHAT IT DOES

What rate_recipe does on CoupleHub MCP Server

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

WHY IT NEEDS A POLICY

Why rate_recipe needs a policy

The tool creates or updates a rating value associated with a recipe, which is a write operation that modifies data. It is reversible (ratings can be changed), so it does not qualify as Destructive. It has minimal blast radius—the worst case is incorrect recipe ratings, which are non-critical metadata in a recipe management system.

From the tool's definition Tool description states 'Rate a recipe 1-5', which modifies the rating attribute of a recipe record. This is a reversible data modification operation typical of write operations.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

rate_recipe Rate-limited

rate_recipe 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": {
    "rate_recipe": {
      "limits": [
        {
          "counter": "rate_recipe_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 CoupleHub MCP Server, so you can run agents against it safely.

FAQ

Questions about rate_recipe

What does the rate_recipe tool do? +

Rate a recipe 1-5. Call when user says 'that was a 4/5' or similar. It is categorised as a Write tool in the CoupleHub 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 rate_recipe? +

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

What risk level is rate_recipe? +

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

Can I rate-limit rate_recipe? +

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

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

rate_recipe is provided by the CoupleHub MCP Server MCP server (uczesieweba/couplehub-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.