AI agents call getKingOfTheHill to retrieve information from Pump Fun MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool appears to retrieve the current 'King of the Hill' token or similar leaderboard metric from pump.fun. There is no indication of side effects, data modification, execution of code, deletion, or financial transactions. All sibling tools are Read operations querying token and trading data.
From the tool's definition Tool name 'getKingOfTheHill' and context of sibling tools (getBondingCurve, getCreatorProfile, getTokenDetails, getTokenHolders, getTokenTrades, getTrendingTokens, searchTokens) all follow a 'get' pattern indicating data retrieval only.
Documented attack patterns abuse exactly the kind of access getKingOfTheHill gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Pump Fun MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for getKingOfTheHill:
{
"version": "1",
"default": "deny",
"tools": {
"getKingOfTheHill": {}
}
}getKingOfTheHill is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get the current. It is categorised as a Read tool in the Pump Fun MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Pump Fun MCP Server MCP server in PolicyLayer and add a rule for getKingOfTheHill: 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 Pump Fun MCP Server. Nothing to install.
getKingOfTheHill 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 getKingOfTheHill 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 getKingOfTheHill. 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.
getKingOfTheHill is provided by the Pump Fun MCP Server MCP server (nirholas/pump-fun-workers). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Pump Fun MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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10 Pump Fun MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.