Get markets that are closing/resolving soon. Great for finding imminent trading opportunities.
AI agents call get_closing_soon 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 filters market data based on closure timing—a pure read operation with no modifications, deletions, or financial transactions. It queries existing market information to help users identify markets by their temporal characteristics. The severity is low because retrieving market data carries minimal risk; the tool cannot execute trades, modify balances, or cause irreversible harm.
From the tool's definition Tool name 'get_closing_soon' and description 'Get markets that are closing/resolving soon' indicate a query/retrieval operation. The phrase 'finding imminent trading opportunities' further confirms this is informational access without side effects.
Attacks that exploit this kind of access
Get markets that are closing/resolving soon. Great for finding imminent trading opportunities. 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 get_closing_soon: 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.
get_closing_soon 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_closing_soon 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_closing_soon. 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_closing_soon is provided by the Polymarket MCP Server MCP server (rafael-pina/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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