List markets with window times, winner, price_to_beat and tradeability.
AI agents call list_markets to retrieve information from Polymarket BTC Backtester 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 information about available markets. It performs a query operation with no side effects—no data is created, modified, deleted, or executed. The action is purely informational, making it a Read category tool with low severity since misuse would only expose market data without enabling harmful actions.
From the tool's definition Tool name 'list_markets' and description 'List markets with window times, winner, price_to_beat and tradeability' indicate a data retrieval operation that returns market metadata without modifying or executing any operations.
Attacks that exploit this kind of access
List markets with window times, winner, price_to_beat and tradeability. It is categorised as a Read tool in the Polymarket BTC Backtester MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Polymarket BTC Backtester MCP Server MCP server in PolicyLayer and add a rule for list_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 BTC Backtester MCP Server. Nothing to install.
list_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 list_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 list_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.
list_markets is provided by the Polymarket BTC Backtester MCP Server MCP server (xin10ylop/polymarket-backtest-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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