List all ledger accounts with their balance as of a given date.
AI agents call list_accounts_with_balances to retrieve information from Finance App without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns account information and balances without creating, modifying, deleting, or executing operations. It is a straightforward read operation that retrieves financial data for inspection. While it accesses sensitive financial information, the risk is mitigated by its read-only nature—misuse would at worst expose data but cannot alter accounts, delete records, or commit financial transactions.
From the tool's definition Tool name 'list_accounts_with_balances' and description 'List all ledger accounts with their balance' indicate a retrieval operation with no modification of data.
Attacks that exploit this kind of access
List all ledger accounts with their balance as of a given date. It is categorised as a Read tool in the Finance App MCP Server, which means it retrieves data without modifying state.
Register the Finance App MCP server in PolicyLayer and add a rule for list_accounts_with_balances: 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 Finance App. Nothing to install.
list_accounts_with_balances 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_accounts_with_balances 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_accounts_with_balances. 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_accounts_with_balances is provided by the Finance App MCP server (youssefaltai/finance-app). 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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