Read-only MCP server for Polymarket public market data (Gamma / CLOB / Data APIs).
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# Polymarket MCP Server (read-only) A read-only [MCP](https://modelcontextprotocol.io) server exposing Polymarket's public prediction-market data. Search markets, read live odds and order books, pull historical probability time-series, and inspect public wallet positions — all over **public, unauthenticated** endpoints. **Read-only by design.** No order placement, cancellation, signing, wallets, or private keys. **No API keys, no environment variables, zero secrets.** ## Tools | Tool | What it does | |---|---| | `polymarket_search` | Natural-language search across events / markets / tags. | | `polymarket_list_markets` | Browse & filter markets (volume, liquidity, dates, tags). | | `polymarket_get_market` | Full detail for one market by id, slug, or condition_id. | | `polymarket_list_events` | Browse & filter events (groups of markets). | | `polymarket_get_event` | Event detail with all child markets. | | `polymarket_trending_markets` | What's hot right now (top markets by 24h volume). | | `polymarket_get_live_price` | Freshest CLOB midpoint / bid / ask / spread for an outcome token. | | `polymarket_get_order_book` | Live order book (top N levels) for an outcome token. | | `polymarket_get_price_history` | Historical probability time-series for an outcome token. | | `polymarket_get_user_positions` | Public current holdings for a wallet. | | `polymarket_get_user_activity` | Recent on-chain activity for a wallet. | | `polymarket_get_market_holders` | Top holders per outcome token for a market. | | `polymarket_get_user_value` | Total portfolio value (USDC) for a wallet. | | `polymarket_market_snapshot` | **Recommended:** live odds for one market in a single call. | Every tool is annotated `readOnlyHint=True, openWorldHint=True`. ### Key concepts - **Prices are probabilities.** Outcome prices are floats in `[0, 1]` (e.g. `0.41` = 41%). Tools also surface a human-readable `probability_pct`. - **`token_id` vs `conditionId`.** CLOB pricing/book/history tools key on…
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