Get all crypto assets
AI agents call get_all_crypto 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 cryptocurrency asset information from a Lunch Money account. While the server manages financial data, this particular tool only reads/fetches existing crypto assets without creating, modifying, deleting, or executing any financial transactions. The blast radius is minimal—an AI agent cannot misuse this to move money, alter balances, or cause irreversible harm.
From the tool's definition Tool name 'get_all_crypto' and description 'Get all crypto assets' indicate a retrieval operation with no side effects. The verb 'get' is a classic Read operation that queries data without modification.
Attacks that exploit this kind of access
Get all crypto assets. 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_crypto: 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_crypto 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_crypto 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_crypto. 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_crypto 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.
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