Get all transactions with optional filters
AI agents call get_all_transactions 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 financial transaction data but does not create, modify, delete, or move money. It is a Read operation. Severity is high rather than low because unauthorized access to all transactions could expose sensitive financial information and enable fraud/privacy violations, though the blast radius is limited to data disclosure rather than financial loss or data destruction.
From the tool's definition Tool name 'get_all_transactions' and description 'Get all transactions with optional filters' indicate a query/retrieval operation with no modification or deletion.
Attacks that exploit this kind of access
Get all transactions with optional filters. 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_all_transactions: 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_all_transactions 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_all_transactions 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_all_transactions. 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_all_transactions is provided by the Lunch Money MCP Server MCP server (matiasl13/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.
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