kamino_withdraw

THE RISK

Critical Risk

Why kamino_withdraw needs a policy

Withdrawing collateral from a lending protocol (Kamino K-Lend) is a financial operation that moves cryptocurrency assets. It can affect loan health ratios, potentially triggering liquidations, and irreversibly alters the user's DeFi position. Given the crypto/DeFi context with real financial assets at stake, this is classified as Financial with high severity.

From the tool's definition 'Withdraw supplied collateral from Kamino K-Lend' — moves crypto assets out of a DeFi lending protocol, committing a financial operation on-chain

Documented attack patterns abuse exactly the kind of access kamino_withdraw gives an agent:

POLICY

How to control kamino_withdraw

PolicyLayer is an MCP gateway — it sits between your AI agents and Waiaas, and nothing reaches the server without passing your rules. This is the rule we recommend for kamino_withdraw:

policy.json

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

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

Create a free account and register Waiaas — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

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Go deeper

Critical-risk tools in Waiaas → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Human-in-the-loop → When a tool call should wait for a person — and when policy can decide alone.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
How to Add Spending Controls to Any MCP Agent →
Rate Limiting MCP Tool Calls: A Practical Guide →

FAQ

Questions about kamino_withdraw

What does the kamino_withdraw tool do? +

Withdraw supplied collateral from Kamino K-Lend. Use amount=. It is categorised as a Financial tool in the Waiaas MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on kamino_withdraw? +

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

What risk level is kamino_withdraw? +

kamino_withdraw 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 kamino_withdraw? +

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

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

kamino_withdraw is provided by the Waiaas MCP server (minhoyoo-iotrust/waiaas). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Waiaas tool call.

Start from Waiaas, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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