List Lunch Money categories in flattened or nested form.
AI agents call get_categories to retrieve information from Lunch Money MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and lists category data from the user's Lunch Money account without creating, modifying, or deleting any information. It is a straightforward read operation with minimal blast radius if misused—an AI agent could retrieve category information, but this does not expose financial accounts, transaction details, or enable financial transactions themselves.
From the tool's definition Tool name is 'get_categories' and description states 'List Lunch Money categories', indicating a retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
List Lunch Money categories in flattened or nested form. It is categorised as a Read tool in the Lunch Money MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Lunch Money MCP Server MCP server in PolicyLayer and add a rule for get_categories: 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 Lunch Money MCP Server. Nothing to install.
get_categories 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 get_categories 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 get_categories. 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.
get_categories is provided by the Lunch Money MCP Server MCP server (robshox/lunchmoney-mcp). 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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