markets.discover
Find active Polymarket prediction markets filtered by resolution deadline and category. Returns market question, price, volume, and end date. Use ending=
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What markets.discover does on Polymarket Agent Mcp
AI agents call markets.discover to retrieve information from Polymarket Agent Mcp without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why markets.discover is rated Low
This tool queries and retrieves publicly available market information from Polymarket with filtering options. It has no side effects, does not execute trades, does not modify any data, and does not commit financial transactions. It is a pure Read operation for market discovery and information gathering.
From the tool's definition Tool 'discovers' and 'returns' market data (question, price, volume, end date) with no modification capability. Description explicitly states retrieval: 'Find active Polymarket prediction markets' and 'Returns market question, price, volume, and end date.'
Attacks that exploit this kind of access
The rule that runs markets.discover safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Polymarket Agent Mcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For markets.discover, this is the rule to start with:
markets.discover is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Polymarket Agent Mcp, apply this rule, and every markets.discover call is checked against it from then on.
Questions about markets.discover
Find active Polymarket prediction markets filtered by resolution deadline and category. Returns market question, price, volume, and end date. Use ending=. It is categorised as a Read tool in the Polymarket Agent Mcp MCP Server, which means it retrieves data without modifying state.
Register the Polymarket Agent MCP server in PolicyLayer and add a rule for markets.discover: 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 Agent Mcp. Nothing to install.
markets.discover 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 markets.discover 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 markets.discover. 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.
markets.discover is provided by the Polymarket Agent MCP server (demwick/polymarket-agent-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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