Compute the internal rate of return of a series of cash flows.
AI agents call internal_rate_of_return to retrieve information from MCP Server Template without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a financial calculation/computation only — it reads input cash flow values and returns a computed IRR metric. It does not move money, commit financial obligations, modify data, or execute external operations. It is a read/compute operation similar to other financial math tools on this server (future_value, monthly_payment, etc.).
From the tool's definition Compute the internal rate of return of a series of cash flows
Attacks that exploit this kind of access
Compute the internal rate of return of a series of cash flows. It is categorised as a Read tool in the MCP Server Template MCP Server, which means it retrieves data without modifying state.
Register the MCP Server Template MCP server in PolicyLayer and add a rule for internal_rate_of_return: 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 Server Template. Nothing to install.
internal_rate_of_return 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 internal_rate_of_return 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 internal_rate_of_return. 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.
internal_rate_of_return is provided by the MCP Server Template MCP server (sinan-ozel/finance-tools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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