How do I use Polymarket MCP Server?

1. Click on "Install Server". 2. Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state. 3. In the chat, type @ followed by the MCP server name and your instructions, e.g., "@Polymarket MCP Server show me the top prediction markets by volume" That's it! The server will respond to your query, and you can continue using it as needed. Here is a step-by-step guide with screenshots.

Polymarket MCP Server

by Arjein

Overview Schema Related Servers Score Discussions

Python

Remote

Polymarket MCP Server

An MCP (Model Context Protocol) server that gives LLM agents full access to Polymarket — the world's largest prediction market. Discover markets, analyze trends, monitor positions, and execute trades.

34 tools · 4 APIs · Read + Write · Safety Guards Built-in

Features

Category	Tools	Auth Required
🔍 Market Discovery	`search_events`, `search_markets`, `get_event`, `get_gamma_market`	❌
📊 Real-Time Pricing	`get_price`, `get_midpoint`, `get_spread`, `get_order_book`, `get_last_trade_price` + batch variants	❌
📈 Analytics	`get_price_history`, `get_open_interest`	❌
🏦 Account	`get_positions`, `get_trade_history`, `get_activity`	Wallet address
💰 Trading	`place_order`, `cancel_order`, `cancel_all_orders`, `get_open_orders`, `get_balance_allowance`	Private key
⚙️ Market Metadata	`get_tick_size`, `get_neg_risk`, `get_fee_rate`, CLOB market listings	❌

Related MCP server: polymarket-mcp

Quick Start

Prerequisites

Python 3.12+
uv (recommended) or pip

Installation

git clone https://github.com/Arjein/polymarket-mcp.git
cd polymarket-mcp
uv sync

Configuration

cp .env.example .env

For read-only tools (market data, analytics): no configuration needed.

For trading tools: add your credentials to .env:

POLYMARKET_PRIVATE_KEY=0xYourPrivateKey
POLYMARKET_WALLET_ADDRESS=0xYourWalletAddress
POLYMARKET_DRY_RUN=true        # Start with dry-run!
POLYMARKET_MAX_ORDER_SIZE=100  # Safety limit in USD

Connect to Claude Desktop

Add to your Claude Desktop config (~/Library/Application Support/Claude/claude_desktop_config.json):

{
  "mcpServers": {
    "polymarket": {
      "command": "uv",
      "args": ["--directory", "/path/to/polymarket-mcp", "run", "server.py"]
    }
  }
}

Run Standalone

uv run server.py

Architecture

polymarket-mcp/
├── server.py              # MCP server entrypoint
├── clients/
│   ├── clob.py            # CLOB API (public reads + price history)
│   ├── gamma.py           # Gamma API (market/event discovery)
│   ├── data.py            # Data API (positions, trades, open interest)
│   └── auth_clob.py       # Authenticated CLOB (orders, balances)
├── tools/
│   ├── clob_tools.py      # 18 read-only CLOB tools
│   ├── gamma_tools.py     # 4 market discovery tools
│   ├── data_tools.py      # 5 analytics & account tools
│   └── trading_tools.py   # 7 authenticated trading tools
├── .env.example           # Configuration template
└── pyproject.toml         # Dependencies & metadata

API Coverage

API	Base URL	Purpose
CLOB	`clob.polymarket.com`	Order books, prices, spreads, market data
Gamma	`gamma-api.polymarket.com`	Market/event discovery, metadata, search
Data	`data-api.polymarket.com`	Positions, trades, activity, open interest
CLOB Auth	`clob.polymarket.com`	Order placement/cancellation, balances

Development

npx -y @modelcontextprotocol/inspector uv run polymarket-mcp

Safety Guards

The trading tools include built-in safety mechanisms:

Dry-run mode (POLYMARKET_DRY_RUN=true): Orders are simulated and returned as JSON without executing. Enabled by default.
Max order size (POLYMARKET_MAX_ORDER_SIZE): Orders exceeding this USD value are rejected. Default: $100.
Lazy authentication: The server starts without credentials — read-only tools work immediately. Auth is only initialized when a trading tool is first called.

Tool Reference

Tool	Description
`search_events`	Search events by query, tag, active/closed status
`get_event`	Get event details including all child markets
`search_markets`	Search markets with filters (volume, tag, status)
`get_gamma_market`	Get full market metadata by ID or slug

Tool	Description
`get_price`	Best bid/ask price for a token
`get_midpoint` / `get_midpoints`	Mid-market price (single / batch)
`get_spread` / `get_spreads`	Bid-ask spread (single / batch)
`get_order_book` / `get_order_books`	Full order book depth (single / batch)
`get_last_trade_price` / `get_last_trades_prices`	Last executed price (single / batch)

Tool	Description
`get_price_history`	Historical time-series with configurable interval and fidelity
`get_open_interest`	Total shares outstanding for a market

Tool	Description
`get_positions`	Current holdings with P&L breakdown
`get_trade_history`	Historical executed trades
`get_activity`	Full audit trail (trades, splits, merges, rewards)

Tool	Description
`place_order`	Place a limit order (BUY/SELL, GTC/FOK/GTD/FAK)
`cancel_order`	Cancel a specific order
`cancel_orders`	Cancel multiple orders
`cancel_all_orders`	Emergency kill switch — cancel everything
`get_open_orders`	List all pending orders
`get_order`	Get order status and details
`get_balance_allowance`	Check USDC balance and approvals

Tool	Description
`clob_health_check`	API health check
`clob_server_time`	Server timestamp
`get_clob_markets` / `get_clob_simplified_markets`	Browse CLOB market listings
`get_tick_size` / `get_neg_risk` / `get_fee_rate`	Market trading parameters
`get_market_trades_events`	Live trade feed for a market

Example Usage

Once connected to Claude Desktop, you can ask:

"What are the hottest markets on Polymarket right now?"

"Show me the Bitcoin price history over the last week"

"What's the order book depth for the Fed rate decision market?"

"Place a dry-run buy order for 100 YES shares at $0.35 on the Super Bowl market"

⚠️ Disclaimer

This software is provided for educational and informational purposes only. It is not financial advice.

Trading prediction markets involves risk. You may lose some or all of your funds.
The authors are not responsible for any financial losses incurred through the use of this software.
You are solely responsible for your own trading decisions and for complying with all applicable laws and regulations in your jurisdiction.

By using this software, you acknowledge and accept these risks.

License

MIT

This server cannot be installed

license - permissive license

quality - not tested

maintenance

How are these scores calculated?

Maintenance

–Maintainers

–Response time

–Release cycle

–Releases (12mo)

Commit activity

Resources

GitHub Repository

Need Help?

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