prepare_aave_supply

SERVERVaultPilot MCP SOURCEvaultpilot-mcp

Critical RISK CLASS

Category Financial

Parameters 53 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-aave-supply.md

WHAT IT DOES

What prepare_aave_supply does on VaultPilot MCP

AI agents use prepare_aave_supply 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
`asset`	string	Yes
`chain`	string	—
`amount`	string	Yes	Human-readable decimal amount of `asset`, NOT raw wei/base units. Example: "1.5" for 1.5 USDC, "0.01" for 0.01 ETH. Pass "max" for full-balance withdraw/repay.
`wallet`	string	Yes
`approvalCap`	string	—	Cap on the ERC-20 approval preceding this action. Omit for "unlimited" (standard DeFi UX — fewer follow-up approvals). Pass "exact" to approve only what this ac

Parameters from the server's own tool schema.

RISK

Why prepare_aave_supply is rated Critical

This tool prepares transactions to supply assets into Aave V3, a DeFi lending protocol. Supplying assets commits funds to an external financial protocol (DeFi), and also requires an ERC-20 approve() which grants token spending allowances. This constitutes a financial commitment of crypto assets, placing it in the Financial category.

From the tool's definition Build an unsigned Aave V3 supply transaction... Both must be signed for the supply to succeed

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs prepare_aave_supply 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_aave_supply, this is the rule to start with:

prepare_aave_supply Approval-gated

Any call to prepare_aave_supply 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_aave_supply": {
      "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_aave_supply call is checked against it from then on.

FAQ

Questions about prepare_aave_supply

What does the prepare_aave_supply tool do? +

Build an unsigned Aave V3 supply transaction. If an ERC-20 approve() is required first, it is returned as the outer tx and the supply tx is embedded in .next. Both must be signed for the supply to succeed. 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_aave_supply accept? +

prepare_aave_supply accepts 5 parameters: asset, chain, amount, wallet, approvalCap. Required: asset, amount, wallet. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on prepare_aave_supply? +

Register the VaultPilot MCP server in PolicyLayer and add a rule for prepare_aave_supply: 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_aave_supply? +

prepare_aave_supply 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_aave_supply? +

Yes. Add a rate_limit block to the prepare_aave_supply 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_aave_supply completely? +

Set action: deny in the PolicyLayer policy for prepare_aave_supply. 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_aave_supply? +

prepare_aave_supply 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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