granite_repay · Stacks AI MCP Server MCP: Risk & Policy

WHAT IT DOES

What granite_repay does on Stacks AI MCP Server

AI agents use granite_repay 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_repay needs a policy

This tool makes financial transactions on a DeFi protocol — repaying borrowed stablecoins directly interacts with lending/debt positions on the blockchain. Misuse could result in unintended repayment of funds or manipulation of debt positions, making it a Financial category tool with high severity given the irreversible nature of on-chain transactions.

From the tool's definition Repay borrowed stablecoins to reduce debt

Attacks that exploit this kind of access

Questions about granite_repay

What does the granite_repay tool do? +

Repay borrowed stablecoins to reduce debt. 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_repay? +

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

granite_repay 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_repay? +

Yes. Add a rate_limit block to the granite_repay 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_repay completely? +

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

granite_repay 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.

// THE FULL RECORD

granite_repay is one line of Stacks AI MCP Server's registry record.

The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.

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