Search Polymarket for active prediction markets by keyword.
AI agents call search_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 performs a search operation to retrieve information about prediction markets. While the Polymarket server overall enables financial decision-making (arbitrage, EV calculation, betting), the search_markets tool itself only reads and returns market data without executing trades, moving money, or modifying any state.
From the tool's definition Tool name 'search_markets' and description 'Search Polymarket for active prediction markets by keyword' indicate a query/retrieval operation with no data modification or financial transaction capability.
Attacks that exploit this kind of access
Search Polymarket for active prediction markets by keyword. 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 search_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.
search_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 search_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 search_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.
search_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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