update_unit

A write tool on the Mealie MCP server.

SERVERMealie MCP Server SOURCEgraysoncadams/mealie-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/graysoncadams-mealie-mcp/update-unit.md

WHAT IT DOES

What update_unit does on Mealie MCP Server

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

RISK

Why update_unit is rated Medium

The 'update_unit' tool modifies existing unit definitions (likely measurement units like cups, grams, etc.) in a recipe management system. This is a reversible write operation—units can be corrected or changed without permanent deletion or financial impact.

From the tool's definition Tool name 'update_unit' in Mealie context (a recipe/meal management system) indicates modifying unit data, consistent with sibling tools that create and add items. Description is empty, lowering confidence slightly.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_unit safely

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

update_unit Rate-limited

update_unit 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_unit": {
      "limits": [
        {
          "counter": "update_unit_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Mealie MCP Server, apply this rule, and every update_unit call is checked against it from then on.

FAQ

Questions about update_unit

What does the update_unit tool do? +

update_unit is a write tool on the Mealie MCP Server MCP server. It is categorised as a Write tool in the Mealie 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_unit? +

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

What risk level is update_unit? +

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

Can I rate-limit update_unit? +

Yes. Add a rate_limit block to the update_unit 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_unit completely? +

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

update_unit is provided by the Mealie MCP Server MCP server (graysoncadams/mealie-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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