# binance_us_cust_transfer

Transfer assets from custodial partner account to Binance.US custodial sub-account. ⚠️ REQUIRES CUSTODIAL SOLUTION API KEY Use this to move assets from your custodial partner (e.g., Anchorage) to your Binance.US custodial sub-account for trading. Response includes: - asset: Transferred asset - amount: Transfer amount - transferId: Unique transfer identifier - custodyAccountId/custodyAccountName: Custodian account details - status: Transfer status - createTime: Transfer creation timestamp

Agent View of the PolicyLayer registry record for `binance_us_cust_transfer`. HTML page: https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-cust-transfer

## Facts

- Tool: `binance_us_cust_transfer`
- Server: Binance US MCP Server (`nirholas/binance-us-mcp`) — https://policylayer.com/tools/nirholas-binance-us-mcp.md
- Homepage: https://github.com/nirholas/Binance-US-MCP
- Risk category: Financial (Critical risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Approval-gated

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "binance_us_cust_transfer",
    "arguments": {}
  }
}
```

## Why binance_us_cust_transfer is rated Critical

This tool directly moves financial assets (cryptocurrency) from one account to another. While it may not involve fiat currency conversion, it commits financial obligations and transfers value between custodial accounts, making it Financial rather than Write. The high severity reflects the potential for significant asset loss if misused by an AI agent with unauthorized access to custodial API keys.

From the tool's own definition: "Transfer assets from custodial partner account to Binance.US custodial sub-account. Response includes asset, amount, transferId, and status — this moves cryptocurrency assets between accounts."

## Use case

AI agents use binance_us_cust_transfer to commit financial operations through Binance US MCP Server, usually the final step of a payment, billing, or trading workflow. A call moves real money.

## Recommended policy (PolicyLayer)

Verdict: **Approval-gated**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Binance US MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "binance_us_cust_transfer": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}
```

## Other tools on Binance US MCP Server (92)

- `binance_us_cancel_all_open_orders` — Destructive — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-cancel-all-open-orders.md
- `binance_us_cancel_oco` — Destructive — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-cancel-oco.md
- `binance_us_cancel_order` — Destructive — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-cancel-order.md
- `binance_us_cust_cancel_oco` — Destructive — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-cust-cancel-oco.md
- `binance_us_cust_cancel_order` — Destructive — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-cust-cancel-order.md
- `binance_us_cust_cancel_orders_symbol` — Destructive — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-cust-cancel-orders-symbol.md
- `binance_us_cancel_replace` — Financial — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-cancel-replace.md
- `binance_us_cl_transfer` — Financial — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-cl-transfer.md
- `binance_us_cust_new_order` — Financial — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-cust-new-order.md
- `binance_us_cust_oco_order` — Financial — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-cust-oco-order.md
- `binance_us_cust_undo_transfer` — Financial — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-cust-undo-transfer.md
- `binance_us_cust_wallet_transfer` — Financial — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-cust-wallet-transfer.md
- `binance_us_custodial_custodian_transfer` — Financial — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-custodial-custodian-transfer.md
- `binance_us_custodial_settlement` — Financial — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-custodial-settlement.md
- `binance_us_custodial_undo_transfer` — Financial — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-custodial-undo-transfer.md
- `binance_us_custodial_wallet_transfer` — Financial — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-custodial-wallet-transfer.md
- `binance_us_new_oco` — Financial — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-new-oco.md
- `binance_us_new_order` — Financial — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-new-order.md
- `binance_us_otc_place_order` — Financial — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-otc-place-order.md
- `binance_us_staking_stake` — Financial — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-staking-stake.md
- `binance_us_staking_unstake` — Financial — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-staking-unstake.md
- `binance_us_subaccount_transfer` — Financial — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-subaccount-transfer.md
- `binance_us_withdraw_crypto` — Financial — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-withdraw-crypto.md
- `binance_us_withdraw_fiat` — Financial — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-withdraw-fiat.md
- `binance_us_account_info` — Read — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-account-info.md
- `binance_us_agg_trades` — Read — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-agg-trades.md
- `binance_us_all_oco_orders` — Read — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-all-oco-orders.md
- `binance_us_all_orders` — Read — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-all-orders.md
- `binance_us_asset_config` — Read — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-asset-config.md
- `binance_us_avg_price` — Read — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-avg-price.md
- …and 62 more: https://policylayer.com/tools/nirholas-binance-us-mcp.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

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Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=nirholas-binance-us-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/nirholas-binance-us-mcp