granite_redeem · Stacks AI MCP Server MCP: Risk & Policy

WHAT IT DOES

What granite_redeem does on Stacks AI MCP Server

AI agents use granite_redeem 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 granite_redeem needs a policy

Redeeming LP tokens converts them into underlying stablecoin assets, which is a financial transaction that moves value/assets. This commits a financial operation on a DeFi protocol, exchanging one form of asset (LP tokens) for another (stablecoins), making it a Financial category action. Misuse could result in significant financial loss if wrong amounts or assets are specified.

From the tool's definition Redeem LP tokens for underlying stablecoin assets

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

granite_redeem Approval-gated

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

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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 granite_redeem

What does the granite_redeem tool do? +

Redeem LP tokens for underlying stablecoin assets. 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 granite_redeem? +

Register the Stacks AI MCP Server MCP server in PolicyLayer and add a rule for granite_redeem: 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 granite_redeem? +

granite_redeem 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 granite_redeem? +

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

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

granite_redeem 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.