Claude gets a wallet and a prediction-market habit

What it does

This MCP server plugs Claude into Polymarket, exposing 45 tools that let an agent browse prediction markets, read order-book depth, place limit and market orders, and track portfolio P&L. It acts as a translation layer between natural-language intent and Polymarket’s Polygon-based API, complete with a local web dashboard for monitoring and a read-only demo mode that works without a wallet.

The interesting bit

What saves it from being expensive glue code is the safety harness: configurable order-size limits, exposure caps, spread tolerances, and a confirmation gate for large trades. The server also handles the unglamorous but critical bits—EIP-712 order signing, token-bucket rate limiting, and auto-reconnecting WebSockets—so the LLM isn’t left holding raw private keys unsupervised.

Key highlights

• 45 tools across five categories: market discovery, analysis, trading, portfolio management, and real-time WebSocket feeds
• Supports advanced order types (GTC, GTD, FOK, FAK), batch submission, and AI-suggested pricing strategies
• Built-in risk controls including position limits, liquidity validation, and a confirmation flow for large orders
• Demo mode offers full read-only market analysis without requiring a Polygon wallet
• Local web dashboard for real-time monitoring, safety-limit tuning, and market browsing

Caveats

• Full trading requires handing your Polygon private key to the server, which the README documents plainly but is still a trust assumption worth auditing
• Claims of “AI-powered” analysis and “enterprise-grade” safety are the author’s own descriptions, with no independent benchmarks or third-party audit cited in the sources

Verdict

Worth a look if you want to experiment with LLM-driven trading bots on prediction markets; avoid it if you are not comfortable storing private keys in a local Python process or if you need battle-tested, audited infrastructure.