velar_execute_swap · Stacks AI MCP Server MCP: Risk & Policy

WHAT IT DOES

What velar_execute_swap does on Stacks AI MCP Server

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

WHY IT NEEDS A POLICY

Why velar_execute_swap needs a policy

This tool executes actual token swaps on a DEX (decentralized exchange), which involves moving crypto assets/funds between parties. Token swaps are financial transactions that transfer value and cannot be trivially reversed, making this Financial category with critical severity due to potential for significant asset loss if misused by an AI agent.

From the tool's definition Execute token swap on Velar DEX with optimal routing

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

velar_execute_swap Approval-gated

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

GATE THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about velar_execute_swap

What does the velar_execute_swap tool do? +

Execute token swap on Velar DEX with optimal routing. It is categorised as a Financial tool in the Stacks AI MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on velar_execute_swap? +

Register the Stacks AI MCP Server MCP server in PolicyLayer and add a rule for velar_execute_swap: 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 Stacks AI MCP Server. Nothing to install.

What risk level is velar_execute_swap? +

velar_execute_swap 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 velar_execute_swap? +

Yes. Add a rate_limit block to the velar_execute_swap 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 velar_execute_swap completely? +

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

velar_execute_swap is provided by the Stacks AI MCP Server MCP server (stack-ai-mcp/stacks-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.