Wallets that traded a given market, ordered by their notional desc.
AI agents call find_market_cohort to retrieve information from Polymarket Research without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves information about wallets that have traded in a given market on Polymarket, ordering results by notional value. It performs a read-only query with no side effects—no data is created, modified, deleted, or executed. The low severity reflects minimal risk from misuse; an agent could at worst learn wallet trading patterns from public blockchain data, which is already public and immutable.
From the tool's definition Tool name 'find_market_cohort' and description 'Wallets that traded a given market, ordered by their notional desc.' indicate a query/retrieval operation. The server is explicitly described as 'Read-only MCP server' with tools 'backed by public APIs'.
Attacks that exploit this kind of access
Wallets that traded a given market, ordered by their notional desc. It is categorised as a Read tool in the Polymarket Research MCP Server, which means it retrieves data without modifying state.
Register the Polymarket Research MCP server in PolicyLayer and add a rule for find_market_cohort: 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 Research. Nothing to install.
find_market_cohort 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 find_market_cohort 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 find_market_cohort. 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.
find_market_cohort is provided by the Polymarket Research MCP server (yoppav/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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