Get active crypto-related Polymarket prediction markets (BTC, ETH, etc).
AI agents call crypto_prediction_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 retrieves or lists prediction market information from Polymarket filtered by crypto assets. It performs a read-only query operation. While the server context involves financial markets and betting, this specific tool does not move money, create financial obligations, modify data, execute arbitrary code, or delete data. It simply fetches and returns market data.
From the tool's definition Tool name and description indicate it 'Get[s] active crypto-related Polymarket prediction markets' — a retrieval operation that queries existing market data with no modifications or side effects.
Attacks that exploit this kind of access
Get active crypto-related Polymarket prediction markets (BTC, ETH, etc). 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 crypto_prediction_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.
crypto_prediction_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 crypto_prediction_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 crypto_prediction_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.
crypto_prediction_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.
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