Sell a token for USDB. Checks balance first. Use percentage to scale out. NOTE: Floor+ tokens (multiplier 1-99) and prediction market tokens have 1.5% tax, other tokens have 0.5% — account for this in slippage.
AI agents use sell_token to commit financial operations through Basis MCP Server — usually the final step of a payment, billing, or trading workflow. A call moves real money.
This tool performs a financial transaction by selling tokens in exchange for USDB (a stablecoin/asset). It directly moves value on-chain, constituting a financial operation. Misuse could result in unintended asset sales, significant financial loss, or manipulation of trading positions. The mention of slippage, taxes, and balance checks confirms this is a live trade execution.
From the tool's definition 'Sell a token for USDB' — directly executes a token sale transaction on BNB Smart Chain, moving assets and involving trading with tax implications (1.5% or 0.5%)
Attacks that exploit this kind of access
Sell a token for USDB. Checks balance first. Use percentage to scale out. NOTE: Floor+ tokens (multiplier 1-99) and prediction market tokens have 1.5% tax, other tokens have 0.5% — account for this in slippage. It is categorised as a Financial tool in the Basis MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the Basis 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 Basis 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 Basis MCP Server MCP server (launch-on-basis/mcp-ts). 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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