hl_sub_transfer

Transfer USDC between master account and sub-account

SERVERWaiaas SOURCEminhoyoo-iotrust/waiaas

Critical RISK CLASS

Category Financial

Parameters 00 required

Recommended Approval-gatedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/minhoyoo-iotrust-waiaas/hl-sub-transfer.md

WHAT IT DOES

What hl_sub_transfer does on Waiaas

AI agents use hl_sub_transfer to commit financial operations through Waiaas, usually the final step of a payment, billing, or trading workflow. A call moves real money.

RISK

Why hl_sub_transfer is rated Critical

This tool moves money (USDC tokens) between accounts, which is a direct financial transaction. Even with the policy engine and spending limits mentioned in the server description, the tool's core function is to commit financial obligations and transfer value. This is the most severe risk category. The confidence is high because the description unambiguously describes a token transfer operation.

From the tool's definition Tool description explicitly states 'Transfer USDC between master account and sub-account'. USDC is a stablecoin with direct financial value.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs hl_sub_transfer safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Waiaas, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For hl_sub_transfer, this is the rule to start with:

hl_sub_transfer Approval-gated

Any call to hl_sub_transfer 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": {
    "hl_sub_transfer": {
      "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 Waiaas, apply this rule, and every hl_sub_transfer call is checked against it from then on.

FAQ

Questions about hl_sub_transfer

What does the hl_sub_transfer tool do? +

Transfer USDC between master account and sub-account. It is categorised as a Financial tool in the Waiaas MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on hl_sub_transfer? +

Register the Waiaas MCP server in PolicyLayer and add a rule for hl_sub_transfer: 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 Waiaas. Nothing to install.

What risk level is hl_sub_transfer? +

hl_sub_transfer 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 hl_sub_transfer? +

Yes. Add a rate_limit block to the hl_sub_transfer 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 hl_sub_transfer completely? +

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

hl_sub_transfer is provided by the Waiaas MCP server (minhoyoo-iotrust/waiaas). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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