List units of measure.
AI agents call list_units to retrieve information from Mcp Mealie without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves a static list of measurement units available in Mealie (e.g., cups, grams, ounces). It performs no data creation, modification, deletion, or external execution. It is informational only and poses minimal security risk if misused by an AI agent.
From the tool's definition Tool name 'list_units' combined with description 'List units of measure' indicates a query/retrieval operation with no side effects. The verb 'list' is a read-only operation.
Attacks that exploit this kind of access
List units of measure. It is categorised as a Read tool in the Mcp Mealie MCP Server, which means it retrieves data without modifying state.
Register the Mcp Mealie MCP server in PolicyLayer and add a rule for list_units: 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 Mcp Mealie. Nothing to install.
list_units is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_units 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.
Set action: deny in the PolicyLayer policy for list_units. 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.
list_units is provided by the Mcp Mealie MCP server (obrien-matthew/mcp-mealie). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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