Get the current balance of a specific account by ID or name.
AI agents call get_account_balance to retrieve information from Actual Budget MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries account data to return current balance information. It performs a read-only retrieval with no capability to modify, delete, or execute operations. Even in a financial application context, simply reading an account balance presents minimal risk — the tool cannot move money, create obligations, or alter account state.
From the tool's definition Tool name is 'get_account_balance' and description states it 'Get[s] the current balance of a specific account' — a retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
Get the current balance of a specific account by ID or name. It is categorised as a Read tool in the Actual Budget MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Actual Budget MCP Server MCP server in PolicyLayer and add a rule for get_account_balance: 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 Actual Budget MCP Server. Nothing to install.
get_account_balance 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_account_balance 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_account_balance. 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_account_balance is provided by the Actual Budget MCP Server MCP server (yhc0712/actual-budget-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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