AI agents use sell-token to commit financial operations through Pump Fun MCP Server — usually the final step of a payment, billing, or trading workflow. A call moves real money.
Selling a token constitutes a financial operation: it transfers ownership of a crypto asset in exchange for SOL/funds, directly impacting the user's financial holdings. This falls squarely in the Financial category, which supersedes all others. Misuse by an AI agent could result in unauthorized liquidation of token holdings, causing irreversible financial loss.
From the tool's definition "Sell a Pump.fun token" — selling a token on a trading platform directly moves financial assets (cryptocurrency on Solana) and commits a financial transaction.
Documented attack patterns abuse exactly the kind of access sell-token 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 sell-token:
{
"version": "1",
"default": "deny",
"tools": {
"sell-token": {
"deny_if": [
{
"conditions": [],
"on_deny": "Requires human approval."
}
]
}
}
}Any call to sell-token is blocked until a human approves it. The rest of the server keeps working.
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Sell a Pump.fun token. It is categorised as a Financial tool in the Pump Fun MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the Pump Fun MCP Server MCP server in PolicyLayer and add a rule for sell-token: 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.
sell-token is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the sell-token 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 sell-token. 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.
sell-token is provided by the Pump Fun MCP Server MCP server (noahgsolomon/pumpfun-mcp-server). 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.
Free to start. No card required.
6 Pump Fun MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.