buy_food · Baselings MCP: Risk & Policy

WHAT IT DOES

What buy_food does on Baselings

AI agents use buy_food to commit financial operations through Baselings — usually the final step of a payment, billing, or trading workflow. A call moves real money.

WHY IT NEEDS A POLICY

Why buy_food needs a policy

This tool initiates an on-chain financial transaction that spends USDC and converts it to liquidity provider (LP) tokens. Both operations involve real monetary value on the Base blockchain, making this a Financial category action. Misuse could result in unintended spending of funds or unfavorable LP conversions.

From the tool's definition 'Buy food from the grocery store (costs USDC, converts to LP)' — spends USDC (a stablecoin) and converts it to LP tokens, committing real financial value on-chain

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

buy_food Approval-gated

Any call to buy_food 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_food": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

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PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Baselings, so you can run agents against it safely.

FAQ

Questions about buy_food

What does the buy_food tool do? +

Buy food from the grocery store (costs USDC, converts to LP). It is categorised as a Financial tool in the Baselings MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on buy_food? +

Register the Baselings MCP server in PolicyLayer and add a rule for buy_food: 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 Baselings. Nothing to install.

What risk level is buy_food? +

buy_food 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_food? +

Yes. Add a rate_limit block to the buy_food 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_food completely? +

Set action: deny in the PolicyLayer policy for buy_food. 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_food? +

buy_food is provided by the Baselings MCP server (jimbo530/baselings-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.