aave_withdraw

THE RISK

Critical Risk

Why aave_withdraw needs a policy

Withdrawal of collateral from a lending protocol directly moves cryptocurrency assets from the protocol to the user's wallet, committing financial value. This is a Financial category tool because it executes transactions that transfer monetary value.

From the tool's definition Tool withdraws collateral from Aave V3 lending pool, a DeFi protocol that manages real financial assets. The description confirms 'Withdraw supplied collateral' indicating irreversible movement of financial assets.

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

POLICY

How to control aave_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 aave_withdraw:

policy.json

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

Any call to aave_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

Related tools and policies

More Waiaas tools

Financial dex_swap Execute DEX swap via D Financial execute_action Execute a DeFi action (swap, bridge, stake, unstake, lend_supply, lend_borrow, lend_repay, Financial drift_withdraw_margin Withdraw excess collateral from Drift V2 margin account to wallet Financial hl_sub_transfer Transfer USDC between master account and sub-account Financial hl_transfer_usdc Transfer USDC between Spot and Perp accounts on Hyperliquid Financial kamino_withdraw Withdraw supplied collateral from Kamino K-Lend. Use amount= Financial transfer_nft transfer_nft Financial aave_borrow Borrow an asset from Aave V3 lending pool against deposited collateral (variable rate)

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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 aave_withdraw

What does the aave_withdraw tool do? +

Withdraw supplied collateral from Aave V3 lending pool. 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 aave_withdraw? +

Register the Waiaas MCP server in PolicyLayer and add a rule for aave_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 aave_withdraw? +

aave_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 aave_withdraw? +

Yes. Add a rate_limit block to the aave_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 aave_withdraw completely? +

Set action: deny in the PolicyLayer policy for aave_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 aave_withdraw? +

aave_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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