prepare_morpho_withdraw_collateral

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-withdraw-collateral.md

WHAT IT DOES

What prepare_morpho_withdraw_collateral does on VaultPilot MCP

AI agents use prepare_morpho_withdraw_collateral 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_withdraw_collateral is rated Critical

This tool builds a DeFi transaction that removes collateral from a Morpho Blue lending market position. Moving collateral out of a lending protocol is a financial operation with critical risk: misuse could push the position below liquidation threshold (causing liquidation and loss of funds), and the transaction commits on-chain financial state changes involving crypto assets.

From the tool's definition 'removes collateral from a market to send back to the wallet', 'withdrawCollateral transaction', 'Morpho Blue', 'Returns a handle + preview for Ledger signing'

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs prepare_morpho_withdraw_collateral 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_withdraw_collateral, this is the rule to start with:

prepare_morpho_withdraw_collateral Approval-gated

Any call to prepare_morpho_withdraw_collateral 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_withdraw_collateral": {
      "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_withdraw_collateral call is checked against it from then on.

FAQ

Questions about prepare_morpho_withdraw_collateral

What does the prepare_morpho_withdraw_collateral tool do? +

Build an unsigned Morpho Blue withdrawCollateral transaction — removes collateral from a market to send back to the wallet. Only withdraws the exact amount specified; "max" is NOT supported because Morpho's isolated-market accounting doesn't expose a clean max-safe value without simulating against the market's oracle/LLTV (query get_morpho_positions first to know your deposited collateral). Will revert on-chain if the withdrawal would push the position below the liquidation threshold. No approval step needed. Returns a handle + preview for Ledger signing. 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_withdraw_collateral accept? +

prepare_morpho_withdraw_collateral 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_withdraw_collateral? +

Register the VaultPilot MCP server in PolicyLayer and add a rule for prepare_morpho_withdraw_collateral: 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_withdraw_collateral? +

prepare_morpho_withdraw_collateral 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_withdraw_collateral? +

Yes. Add a rate_limit block to the prepare_morpho_withdraw_collateral 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_withdraw_collateral completely? +

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

prepare_morpho_withdraw_collateral 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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