# polymarket_get_orderbook

Get orderbook for a specific market. Shows bids and asks with prices and sizes. No authentication required.

Agent View of the PolicyLayer registry record for `polymarket_get_orderbook`. HTML page: https://policylayer.com/tools/asthetech-cl-mcp-polymarket/polymarket-get-orderbook

## Facts

- Tool: `polymarket_get_orderbook`
- Server: Polymarket MCP Server (`asthetech/mewcp-polymarket`) — https://policylayer.com/tools/asthetech-cl-mcp-polymarket.md
- Homepage: https://github.com/AStheTECH/mewcp-polymarket
- Risk category: Read (Low risk)
- Registry record: grade D, 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": "polymarket_get_orderbook",
    "arguments": {}
  }
}
```

## Why polymarket_get_orderbook is rated Low

polymarket_get_orderbook retrieves read-only market data (bids, asks, prices, sizes) without creating, modifying, deleting, or executing any trades or operations. The explicit statement 'No authentication required' and focus on displaying existing orderbook information confirms this is a passive Read operation.

From the tool's own definition: "Tool description states 'Get orderbook for a specific market. Shows bids and asks with prices and sizes. No authentication required.' This retrieves and queries orderbook data with no side effects or modifications."

## Use case

AI agents call polymarket_get_orderbook to retrieve information from Polymarket 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 Polymarket MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "polymarket_get_orderbook": {}
  }
}
```

## Other tools on Polymarket MCP Server (10)

- `polymarket_cancel_order` — Destructive — https://policylayer.com/tools/asthetech-cl-mcp-polymarket/polymarket-cancel-order.md
- `polymarket_create_order` — Financial — https://policylayer.com/tools/asthetech-cl-mcp-polymarket/polymarket-create-order.md
- `polymarket_get_events` — Read — https://policylayer.com/tools/asthetech-cl-mcp-polymarket/polymarket-get-events.md
- `polymarket_get_market` — Read — https://policylayer.com/tools/asthetech-cl-mcp-polymarket/polymarket-get-market.md
- `polymarket_get_markets` — Read — https://policylayer.com/tools/asthetech-cl-mcp-polymarket/polymarket-get-markets.md
- `polymarket_get_midpoint` — Read — https://policylayer.com/tools/asthetech-cl-mcp-polymarket/polymarket-get-midpoint.md
- `polymarket_get_orders` — Read — https://policylayer.com/tools/asthetech-cl-mcp-polymarket/polymarket-get-orders.md
- `polymarket_get_user_positions` — Read — https://policylayer.com/tools/asthetech-cl-mcp-polymarket/polymarket-get-user-positions.md
- `polymarket_get_user_trades` — Read — https://policylayer.com/tools/asthetech-cl-mcp-polymarket/polymarket-get-user-trades.md
- `polymarket_health_check` — Read — https://policylayer.com/tools/asthetech-cl-mcp-polymarket/polymarket-health-check.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`

---

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