prepare_compound_borrow

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-compound-borrow.md

WHAT IT DOES

What prepare_compound_borrow does on VaultPilot MCP

AI agents use prepare_compound_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
`chain`	string	—	EVM chain the Comet market lives on. Defaults to ethereum.
`amount`	string	Yes	Human-readable decimal amount of the market base token, NOT raw wei/base units. Example: "100" for 100 USDC.
`market`	string	Yes	Comet market address (e.g. cUSDCv3). The base token is resolved on-chain.
`wallet`	string	Yes	0x-prefixed EVM wallet address (40 hex chars) that will execute this action.

Parameters from the server's own tool schema.

RISK

Why prepare_compound_borrow is rated Critical

This tool prepares a DeFi borrowing transaction on Compound V3, which constitutes a financial obligation — borrowing tokens against collateral creates a debt position with interest accrual and liquidation risk. Even though it produces an unsigned transaction requiring Ledger confirmation, misuse could result in the AI agent initiating large borrows that commit the user to significant financial liabilities.

From the tool's definition Build an unsigned Compound V3 borrow transaction... borrow as `withdraw(baseToken)` drawn beyond the wallet's supplied balance... Returns a handle + human-readable preview for the user to sign on Ledger

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs prepare_compound_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_compound_borrow, this is the rule to start with:

prepare_compound_borrow Approval-gated

Any call to prepare_compound_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_compound_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_compound_borrow call is checked against it from then on.

FAQ

Questions about prepare_compound_borrow

What does the prepare_compound_borrow tool do? +

Build an unsigned Compound V3 borrow transaction. Compound V3 encodes a borrow as withdraw(baseToken) drawn beyond the wallet's supplied balance — the base token is resolved on-chain from the Comet market so you only pass the market address and amount. Requires the wallet to have already supplied enough collateral in that market; get_compound_positions shows the current collateral mix. Returns a handle + human-readable preview for the user to sign on Ledger; no approval step is needed (borrowing doesn't pull tokens from the wallet). 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_compound_borrow accept? +

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

How do I enforce a policy on prepare_compound_borrow? +

Register the VaultPilot MCP server in PolicyLayer and add a rule for prepare_compound_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_compound_borrow? +

prepare_compound_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_compound_borrow? +

Yes. Add a rate_limit block to the prepare_compound_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_compound_borrow completely? +

Set action: deny in the PolicyLayer policy for prepare_compound_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_compound_borrow? +

prepare_compound_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.

KEEP EXPLORING

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