# binance_us_order_book

Get order book depth (bids and asks) for a trading pair on Binance.US. Returns price levels with quantities. Weight varies based on limit (1-100: weight 1, 101-500: weight 5, 501-1000: weight 10, 1001-5000: weight 50).

Agent View of the PolicyLayer registry record for `binance_us_order_book`. HTML page: https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-order-book

## Facts

- Tool: `binance_us_order_book`
- 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: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

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

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

## Why binance_us_order_book is rated Low

This tool only queries and returns market data from the exchange without creating, modifying, deleting, or executing any financial transactions. While it provides data used in trading decisions, the tool itself performs no side effects. It is a read-only data retrieval operation on publicly available market information.

From the tool's own definition: "Tool retrieves order book depth data (bids and asks) for a trading pair. The description explicitly states it 'Returns price levels with quantities' with no mention of placing orders, modifying data, or executing trades."

## Use case

AI agents call binance_us_order_book to retrieve information from Binance US MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. 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_order_book": {}
  }
}
```

## 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_transfer` — Financial — https://policylayer.com/tools/nirholas-binance-us-mcp/binance-us-cust-transfer.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
- …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