uncancel_meal · IIITH Mess MCP Server MCP: Risk & Policy

WHAT IT DOES

What uncancel_meal does on IIITH Mess MCP Server

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

WHY IT NEEDS A POLICY

Why uncancel_meal needs a policy

This tool reverses a prior cancellation, effectively reinstating a meal registration. It modifies existing data (meal registration state) but is reversible (the meal can be cancelled again), placing it in the Write category. Misuse could result in unwanted meal charges or disrupted meal planning, giving it medium severity.

From the tool's definition Uncancel a previously cancelled meal registration

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

uncancel_meal Rate-limited

uncancel_meal 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": {
    "uncancel_meal": {
      "limits": [
        {
          "counter": "uncancel_meal_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 IIITH Mess MCP Server, so you can run agents against it safely.

FAQ

Questions about uncancel_meal

What does the uncancel_meal tool do? +

Uncancel a previously cancelled meal registration. It is categorised as a Write tool in the IIITH Mess 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 uncancel_meal? +

Register the IIITH Mess MCP Server MCP server in PolicyLayer and add a rule for uncancel_meal: 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 IIITH Mess MCP Server. Nothing to install.

What risk level is uncancel_meal? +

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

Can I rate-limit uncancel_meal? +

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

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

uncancel_meal is provided by the IIITH Mess MCP Server MCP server (njp6969/iiith-mess-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.