AI agents call get_protected_bank_account_balance to retrieve information from Smokeball without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves account balance information (specifically reserved/protected balance). Although it involves financial data, it performs no financial transaction, fund movement, or commitment. The 'Get' verb and passive information retrieval make this a Read operation with low severity, as misuse would expose data rather than cause direct financial harm or operational damage.
From the tool's definition Tool name and description indicate a query operation: 'Get the protected (reserved) balance for a bank account' - this retrieves financial account information without modifying, moving, or committing funds.
Attacks that exploit this kind of access
Get the protected (reserved) balance for a bank account. It is categorised as a Read tool in the Smokeball MCP Server, which means it retrieves data without modifying state.
Register the Smokeball MCP server in PolicyLayer and add a rule for get_protected_bank_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 Smokeball. Nothing to install.
get_protected_bank_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_protected_bank_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_protected_bank_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_protected_bank_account_balance is provided by the Smokeball MCP server (rosenadvertising/smokeball-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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