AI agents use moolah_vault_withdraw to commit financial operations through Justlend — usually the final step of a payment, billing, or trading workflow. A call moves real money.
Withdrawing underlying assets from a DeFi vault is a financial operation that transfers value. On a lending/borrowing protocol like JustLend DAO, this moves real financial assets (tokens) from the protocol back to the user, constituting a financial transaction with direct monetary impact. Misuse could drain funds from vaults.
From the tool's definition 'Withdraw underlying assets from a Moolah vault' — moves crypto/financial assets out of a vault on JustLend DAO, a DeFi lending protocol on TRON
Attacks that exploit this kind of access
Withdraw underlying assets from a Moolah vault by specifying the asset amount. It is categorised as a Financial tool in the Justlend MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the Justlend MCP server in PolicyLayer and add a rule for moolah_vault_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 Justlend. Nothing to install.
moolah_vault_withdraw is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the moolah_vault_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.
Set action: deny in the PolicyLayer policy for moolah_vault_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.
moolah_vault_withdraw is provided by the Justlend MCP server (justlend/mcp-server-justlend). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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