Show all open paper trading positions with unrealised P&L.
AI agents call paper_portfolio to retrieve information from Polymarket 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 and displays existing data about simulated trading positions. It has no side effects—it queries the current state of a paper (virtual) portfolio and calculates derived metrics (unrealised P&L). There is no capability to create, modify, or delete positions, nor to execute trades or move real money. The 'paper' qualifier explicitly indicates no financial consequences.
From the tool's definition Tool name 'paper_portfolio' combined with description 'Show all open paper trading positions with unrealised P&L' indicates retrieval of portfolio state. The term 'paper trading' confirms these are simulated positions with no real financial impact.
Attacks that exploit this kind of access
Show all open paper trading positions with unrealised P&L. It is categorised as a Read tool in the Polymarket MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Polymarket MCP Server MCP server in PolicyLayer and add a rule for paper_portfolio: 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 Polymarket MCP Server. Nothing to install.
paper_portfolio 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 paper_portfolio 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 paper_portfolio. 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.
paper_portfolio is provided by the Polymarket MCP Server MCP server (miles0sage/polymarket-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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