Get the interest rates for savings accounts in MB Bank.
AI agents call get_interest_rates to retrieve information from MBBank 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 informational data (interest rates) about savings accounts without modifying any data, executing commands, or initiating financial transactions. It is a straightforward read operation with minimal security impact—interest rate information is typically public or user-accessible data. The low severity reflects that misuse would only expose non-sensitive rate information.
From the tool's definition Tool name 'get_interest_rates' and description 'Get the interest rates for savings accounts' indicate a retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access get_interest_rates gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MBBank MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_interest_rates:
{
"version": "1",
"default": "deny",
"tools": {
"get_interest_rates": {}
}
}get_interest_rates is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get the interest rates for savings accounts in MB Bank. It is categorised as a Read tool in the MBBank MCP Server MCP Server, which means it retrieves data without modifying state.
Register the MBBank MCP Server MCP server in PolicyLayer and add a rule for get_interest_rates: 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 MBBank MCP Server. Nothing to install.
get_interest_rates 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_interest_rates 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_interest_rates. 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_interest_rates is provided by the MBBank MCP Server MCP server (thedtvn/mbbank-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MBBank MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
11 MBBank MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.