Build a Kamino repay tx — pays down outstanding debt in the named reserve. Refuses with a clear error if the wallet has no debt in the reserve. The on-chain program clamps repayment at outstanding debt, so over-repaying just doesn't burn the excess (no funds lost). DURABLE NONCE REQUIRED + same b...
AI agents call prepare_kamino_repay to permanently remove resources in VaultPilot MCP — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
| Parameter | Type | Required | Description |
|---|---|---|---|
mint | string | Yes | Base58 Solana mainnet address (ed25519 pubkey, 43 or 44 chars). |
amount | string | Yes | Human-readable amount to repay. The on-chain program clamps repayment at outstanding debt; over-repaying just doesn't burn the excess (no funds lost). Refuses w |
wallet | string | Yes | Solana base58 wallet — must already have outstanding debt in the named reserve. |
Parameters from the server's own tool schema.
An AI agent that decides to call prepare_kamino_repay doesn't hesitate, doesn't double-check, and doesn't stop at one. Whatever it removes from VaultPilot MCP is gone — there is no undo for destructive operations.
Attacks that exploit this kind of access
Build a Kamino repay tx — pays down outstanding debt in the named reserve. Refuses with a clear error if the wallet has no debt in the reserve. The on-chain program clamps repayment at outstanding debt, so over-repaying just doesn't burn the excess (no funds lost). DURABLE NONCE REQUIRED + same blind-sign treatment as prepare_kamino_supply. It is categorised as a Destructive tool in the VaultPilot MCP MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
prepare_kamino_repay 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_repay: 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_repay is a Destructive 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_repay 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_repay. 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_repay 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.