Get top active Polymarket markets by trading volume.
AI agents call trending_markets 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 only retrieves and queries public market data from Polymarket, presenting no side effects or ability to modify, execute, or commit financial transactions. While the server context involves financial prediction markets, this specific tool performs passive market research by listing trending markets, comparable to a search or list operation.
From the tool's definition Tool description states 'Get top active Polymarket markets by trading volume' - a retrieval operation with no modification or execution capabilities. The verb 'Get' and the read-only nature of querying market data confirm this is a data retrieval function.
Attacks that exploit this kind of access
Get top active Polymarket markets by trading volume. 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 trending_markets: 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.
trending_markets 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 trending_markets 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 trending_markets. 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.
trending_markets 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.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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