AI agents call list_markets to retrieve information from Liquidiction without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns market data (list of markets with prices) from the Hyperliquid prediction market platform. It is a read-only operation that retrieves information without creating, modifying, executing, or deleting anything. The blast radius of misuse is minimal—an agent listing markets cannot cause financial loss, data corruption, or unwanted transactions by itself.
From the tool's definition Tool name 'list_markets' and description 'List all prediction markets with current prices' indicate a data retrieval operation with no modification or execution side effects.
Documented attack patterns abuse exactly the kind of access list_markets gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Liquidiction, and nothing reaches the server without passing your rules. This is the rule we recommend for list_markets:
{
"version": "1",
"default": "deny",
"tools": {
"list_markets": {}
}
}list_markets is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
List all prediction markets with current prices. It is categorised as a Read tool in the Liquidiction MCP Server, which means it retrieves data without modifying state.
Register the Liquidiction 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 Liquidiction. 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 Liquidiction MCP server (liquidiction/liquidiction-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Liquidiction, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
10 Liquidiction tools catalogued and risk-classified — across an index of 43,000+ MCP servers.