buy_token

SERVERBasis MCP Server SOURCElaunch-on-basis/mcp-ts

Critical RISK CLASS

Category Financial

Parameters 00 required

Recommended Approval-gatedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/launch-on-basis-mcp-ts/buy-token.md

WHAT IT DOES

What buy_token does on Basis MCP Server

AI agents use buy_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.

RISK

Why buy_token is rated Critical

This tool executes a financial transaction on a blockchain, spending USDB (a stablecoin/token) to purchase tokens. It moves real financial value, incurs transaction taxes/fees, and affects market prices. This is a direct financial operation with irreversible on-chain consequences, qualifying as Financial at critical severity given the potential for significant monetary loss through misuse, slippage, or manipulation.

From the tool's definition Buy a token using USDB... buying increases price... 1.5% tax, other tokens have 0.5% — account for this in slippage

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs buy_token safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Basis MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For buy_token, this is the rule to start with:

buy_token Approval-gated

Any call to buy_token is blocked until a human approves it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "buy_token": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

GATE THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Basis MCP Server, apply this rule, and every buy_token call is checked against it from then on.

FAQ

Questions about buy_token

What does the buy_token tool do? +

Buy a token using USDB. Elastic supply — buying increases price. Previews before executing. 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.

How do I enforce a policy on buy_token? +

Register the Basis MCP Server MCP server in PolicyLayer and add a rule for buy_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.

What risk level is buy_token? +

buy_token is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit buy_token? +

Yes. Add a rate_limit block to the buy_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.

How do I block buy_token completely? +

Set action: deny in the PolicyLayer policy for buy_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.

What MCP server provides buy_token? +

buy_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.

KEEP EXPLORING

More on Basis MCP Server, and thousands of servers like it.

This server

All 204 Basis MCP Server tools → Critical-risk tools on this server →

Across the catalogue

buy_now on Ebay → All critical-risk MCP tools → The MCP Attack Database →

Guides

Govern MCP payment tools →Human-in-the-loop →Tool call approval →