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name: tool-polymarket-book description: Use the polymarket_book tool to fetch Polymarket CLOB order book depth (YES/NO) via Gamma + CLOB and expose best bid/ask/mid.

polymarket_book (Polymarket CLOB book)

When to use

• Liquidity check before sizing into a market.
• Spread + depth + mid estimation.

Parameters

• marketId (string, required): Gamma numeric id (e.g. "516710") or conditionId hex ("0x...").
• outcome ("YES" | "NO", optional): Defaults to "YES".
• depth (int, optional, 1–200): Levels per side; default 20.

Examples

Copy{ "name": "polymarket_book", "params": { "marketId": "0xabc...def", "outcome": "YES", "depth": 50 } }

Output

• Returns: { marketId, conditionId, question, slug, endDate, outcome, tokenId, bookAvailable, bestBid, bestAsk, mid, bids[], asks[], ts }
• Rendered:
  • Emits a JSON output with title orderbook (used by the UI to open/focus a book window when available).
  • Market (text with mid/bid/ask and “no CLOB orderbook” when missing)
  • Asks + Bids (tables)

Notes

• Some markets have no CLOB orderbook; the tool returns bookAvailable=false and empty bids/asks.
• targetWindow: book