Calculate current P&L percentage for a hypothetical or live position. Fetches current price from CoinGecko.
AI agents call calculate_pnl to retrieve information from Agenti without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only reads and computes financial metrics using external data; it does not execute trades, move funds, modify positions, or create obligations. The P&L calculation is informational only. While part of a financial server, the tool itself performs no financial actions that would warrant Financial or Execute classification.
From the tool's definition Tool description states it 'Calculate[s] current P&L percentage' and 'Fetches current price from CoinGecko' - purely data retrieval operations with no side effects, modifications, or financial transactions.
Documented attack patterns abuse exactly the kind of access calculate_pnl gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Agenti, and nothing reaches the server without passing your rules. This is the rule we recommend for calculate_pnl:
{
"version": "1",
"default": "deny",
"tools": {
"calculate_pnl": {}
}
}calculate_pnl is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Calculate current P&L percentage for a hypothetical or live position. Fetches current price from CoinGecko. It is categorised as a Read tool in the Agenti MCP Server, which means it retrieves data without modifying state.
Register the Agenti MCP server in PolicyLayer and add a rule for calculate_pnl: 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 Agenti. Nothing to install.
calculate_pnl 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 calculate_pnl 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 calculate_pnl. 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.
calculate_pnl is provided by the Agenti MCP server (nirholas/agenti). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 73 Agenti tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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73 Agenti tools catalogued and risk-classified — across an index of 42,500+ MCP servers.