Build a Kamino withdraw tx — pulls liquidity out of a previously-supplied reserve. Refuses with a clear error if the wallet has no deposit in the named reserve. Health-factor gated on-chain: withdraws that would leave the obligation under-collateralized for outstanding debt revert (caught by the ...
AI agents use prepare_kamino_withdraw 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 |
|---|---|---|---|
mint | string | Yes | Base58 Solana mainnet address (ed25519 pubkey, 43 or 44 chars). |
amount | string | Yes | Human-readable amount to withdraw. The reserve must have an active deposit from this wallet — the builder refuses with a clear error otherwise. Health-factor ga |
wallet | string | Yes | Solana base58 wallet — must already have a Kamino deposit in the named reserve. |
Parameters from the server's own tool schema.
prepare_kamino_withdraw moves real money, and an autonomous agent will call it with the same confidence it calls a search tool. A misread instruction or an injected prompt is all it takes to drain an account or blow a budget.
Attacks that exploit this kind of access
Build a Kamino withdraw tx — pulls liquidity out of a previously-supplied reserve. Refuses with a clear error if the wallet has no deposit in the named reserve. Health-factor gated on-chain: withdraws that would leave the obligation under-collateralized for outstanding debt revert (caught by the simulation gate). DURABLE NONCE REQUIRED + same blind-sign treatment as prepare_kamino_supply. 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.
prepare_kamino_withdraw accepts 3 parameters: mint, amount, wallet. Required: mint, amount, wallet. The full parameter table on this page comes from the server's own tool schema.
Register the VaultPilot MCP server in PolicyLayer and add a rule for prepare_kamino_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 VaultPilot MCP. Nothing to install.
prepare_kamino_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 prepare_kamino_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 prepare_kamino_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.
prepare_kamino_withdraw 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.