AI agents call get_day_trades to retrieve information from Paper 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 historical or current day trade data for viewing purposes only. It does not create, modify, delete, or execute any trades or account changes. While the server manages a financial platform, this specific tool is purely informational (Read category), not a Financial operation that commits obligations or moves money.
From the tool's definition Tool name 'get_day_trades' and description 'Get day trade activity for a portfolio' indicate a retrieval operation with no side effects. The verb 'Get' and absence of modification, deletion, or execution language confirm this is a read-only query.
Documented attack patterns abuse exactly the kind of access get_day_trades gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Paper MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_day_trades:
{
"version": "1",
"default": "deny",
"tools": {
"get_day_trades": {}
}
}get_day_trades is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get day trade activity for a portfolio. It is categorised as a Read tool in the Paper MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Paper MCP Server MCP server in PolicyLayer and add a rule for get_day_trades: 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 Paper MCP Server. Nothing to install.
get_day_trades 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_day_trades 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_day_trades. 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_day_trades is provided by the Paper MCP Server MCP server (paperinvest/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Paper MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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23 Paper MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.