prepare_morpho_borrow

Build an unsigned Morpho Blue borrow transaction. Requires pre-existing collateral in the market.

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-morpho-borrow.md

WHAT IT DOES

What prepare_morpho_borrow does on VaultPilot MCP

AI agents use prepare_morpho_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 Morpho Blue is deployed on. Currently only ethereum is enabled.
`amount`	string	Yes	Human-readable decimal amount, NOT raw wei/base units. Example: "10" for 10 USDC. Pass "max" for full-balance withdraw/repay.
`wallet`	string	Yes	0x-prefixed EVM wallet address (40 hex chars) that will execute this action.
`marketId`	string	Yes	Morpho Blue market id — 32-byte hex (0x + 64 hex chars). Identifies the market's (loanToken, collateralToken, oracle, irm, lltv) tuple. Discover via get_morpho_

Parameters from the server's own tool schema.

RISK

Why prepare_morpho_borrow is rated Critical

Borrowing from a DeFi protocol is a financial action that creates a debt obligation secured by collateral. Even though the transaction is unsigned (unsigned tx builder), the tool's purpose is to initiate a borrow — a financial commitment. If misused by an AI agent, it could lead to undercollateralized positions, liquidation risk, or large financial losses. Financial > all other categories applies here.

From the tool's definition 'Morpho Blue borrow transaction' — this builds a transaction to borrow assets from a DeFi lending protocol against collateral, committing a financial obligation (debt) on-chain.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs prepare_morpho_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_morpho_borrow, this is the rule to start with:

prepare_morpho_borrow Approval-gated

Any call to prepare_morpho_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_morpho_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_morpho_borrow call is checked against it from then on.

FAQ

Questions about prepare_morpho_borrow

What does the prepare_morpho_borrow tool do? +

Build an unsigned Morpho Blue borrow transaction. Requires pre-existing collateral in the market. 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_morpho_borrow accept? +

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

How do I enforce a policy on prepare_morpho_borrow? +

Register the VaultPilot MCP server in PolicyLayer and add a rule for prepare_morpho_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_morpho_borrow? +

prepare_morpho_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_morpho_borrow? +

Yes. Add a rate_limit block to the prepare_morpho_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_morpho_borrow completely? +

Set action: deny in the PolicyLayer policy for prepare_morpho_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_morpho_borrow? +

prepare_morpho_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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