Get reference interest rates (tasas de interés de referencia)
AI agents call get_interest_rates to retrieve information from Mcp Ap2 without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves financial reference data (interest rates) without modifying state, executing code, or triggering financial transactions. It is a simple lookup/query operation. While the server context involves payment protocol operations, this specific tool only reads reference rates and poses minimal risk if misused by an agent—it cannot authorize payments, move money, or make irreversible changes.
From the tool's definition Tool name 'get_interest_rates' and description 'Get reference interest rates' indicate data retrieval 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 Mcp Ap2, 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 reference interest rates (tasas de interés de referencia). It is categorised as a Read tool in the Mcp Ap2 MCP Server, which means it retrieves data without modifying state.
Register the Mcp Ap2 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 Mcp Ap2. 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 Mcp Ap2 MCP server (@codespar/mcp-ap2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Mcp Ap2, 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.
1300 Mcp Ap2 tools catalogued and risk-classified — across an index of 43,000+ MCP servers.