Subscribe to real-time updates for user
AI agents call subscribe_user_orders 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 or listens to real-time data streams about existing orders. It has no side effects—it does not create, modify, delete, or execute trades. While it operates in a financial context (Polymarket), the action itself is purely observational/read-only monitoring. The blast radius of misuse is minimal since an agent cannot cause financial harm, execute trades, or delete data through subscription alone.
From the tool's definition Tool name 'subscribe_user_orders' and description 'Subscribe to real-time updates for user' indicate a subscription to monitoring/listening for order updates without modifying data or executing trades.
Attacks that exploit this kind of access
Subscribe to real-time updates for user. 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 subscribe_user_orders: 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.
subscribe_user_orders 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 subscribe_user_orders 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 subscribe_user_orders. 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.
subscribe_user_orders is provided by the Polymarket MCP Server MCP server (nancheng582-jpg/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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