prepare_aave_borrow

Build an unsigned Aave V3 borrow transaction (variable rate — stable rate is deprecated and reverts on production markets). The borrower must already have sufficient collateral supplied.

SERVERVaultPilot MCP SOURCEvaultpilot-mcp

Critical RISK CLASS

Category Financial

Parameters 43 required

Recommended Approval-gatedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-szhygulin-vaultpilot-mcp/prepare-aave-borrow.md

WHAT IT DOES

What prepare_aave_borrow does on VaultPilot MCP

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

Parameter	Type	Required	Description
`asset`	string	Yes
`chain`	string	—
`amount`	string	Yes	Human-readable decimal amount of `asset`, NOT raw wei/base units. Example: "1.5" for 1.5 USDC, "0.01" for 0.01 ETH. Pass "max" for full-balance withdraw/repay.
`wallet`	string	Yes

Parameters from the server's own tool schema.

RISK

Why prepare_aave_borrow is rated Critical

Borrowing on Aave V3 is a financial operation that incurs on-chain debt obligations. Even though the transaction is 'unsigned' at preparation time, the tool's purpose is to create a transaction that, once signed and broadcast, moves assets and creates variable-rate debt against the user's collateral. Misuse could result in undercollateralized positions, liquidation risk, or unauthorized borrowing.

From the tool's definition 'Build an unsigned Aave V3 borrow transaction' — this prepares a DeFi borrowing operation on Aave V3, which commits the user to a debt position backed by collateral.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs prepare_aave_borrow safely

PolicyLayer is an MCP gateway: it sits between your AI agents and VaultPilot MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For prepare_aave_borrow, this is the rule to start with:

prepare_aave_borrow Approval-gated

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

GATE THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect VaultPilot MCP, apply this rule, and every prepare_aave_borrow call is checked against it from then on.

FAQ

Questions about prepare_aave_borrow

What does the prepare_aave_borrow tool do? +

Build an unsigned Aave V3 borrow transaction (variable rate — stable rate is deprecated and reverts on production markets). The borrower must already have sufficient collateral supplied. It is categorised as a Financial tool in the VaultPilot MCP MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

What parameters does prepare_aave_borrow accept? +

prepare_aave_borrow accepts 4 parameters: asset, chain, amount, wallet. Required: asset, amount, wallet. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on prepare_aave_borrow? +

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

What risk level is prepare_aave_borrow? +

prepare_aave_borrow 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 prepare_aave_borrow? +

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

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

prepare_aave_borrow is provided by the VaultPilot MCP server (vaultpilot-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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