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Polymarket Tools is the first complete Polymarket trading node for the n8n workflow automation platform. It supports EIP-712 signing, AI agent integration, and automated workflow templates, providing prediction market traders with robust automation capabilities.
Section 01
Polymarket Tools is the first complete Polymarket trading node for the n8n workflow automation platform. It supports EIP-712 signing, AI agent integration, and automated workflow templates, addressing technical barriers for traders wanting to implement automated strategies in prediction markets. This node integrates full trading functions into n8n, empowering users with robust automation capabilities.
Section 02
Before Polymarket Tools, the n8n ecosystem had two Polymarket community nodes with limitations: one lacked actual trading functionality (only "coming soon" placeholder), and the other required external pre-signing of orders and pasting raw payloads. These fragmented experiences hindered automated trading strategies. Polymarket Tools solves these issues by wrapping the official @polymarket/clob-client, using viem WalletClient for EIP-712 signing, handling SDK issues with defensive programming, and exposing full Polymarket API as n8n actions/triggers.
Section 03
Full Trading Operations: Covers market discovery (search with filters, get details via ID/slug), real-time price data (current price, midpoint, spread, order book depth from CLOB API), EIP-712 signed transactions (supports GTC/IOC/FOK order types and dry runs), and order management (cancel by ID, query open orders).
Data Insights: Provides leaderboard data (top traders by profit over time), wallet analysis (positions, P&L, trade history), and market position distribution (top holders).
Triggers: Supports price change threshold, price crossing, and new market events for automation.
Section 04
Polymarket Tools is the first n8n trading node with native AI agent support (nodes marked usableAsTool: true). This allows building workflows where LLMs analyze market data/news/on-chain metrics and execute trades autonomously (e.g., "buy when AI confidence >80%"). It elevates automation from simple condition triggers to complex reasoning-based decisions.
Section 05
UX Optimization: Uses loadOptionsMethod to dynamically populate dropdowns with Polymarket API data, letting users browse markets directly in n8n (no manual ID copying).
Templates: 5 validated templates: 1) Smart Money Radar (track top traders, send Telegram alerts), 2) AI News-Market Matcher (RSS → AI analysis → trading signals),3) Mispricing Scanner (detect arbitrage opportunities in related markets),4) Daily Portfolio Summary (morning P&L update),5) Settlement Monitor (reminders for closing markets).
Section 06
Monorepo Structure: Split into @polymarket-tools/core (TypeScript client library for Polymarket APIs) and n8n-nodes-polymarket (n8n nodes/templates).
Quality Practices: Security-first (credential cleaning, safe private key management via viem), defensive programming (handles SDK issues like auth header cleaning, balance retry, NaN price checks), 127 tests (API response normalization), rate limit awareness (unified fetchJson for 429 handling).
Section 07
Polymarket Tools is free to use. Revenue comes from Polymarket's Builder Program—each order via the node is tagged with a builder code, earning rewards based on transaction volume. This creates a win-win: users get free tools, and the project gains sustainable income from repeated automated trades.
Section 08
Roadmap: 1) Full position query via Data API,2) Complete builder code integration (key+secret+passphrase),3) Add Kalshi exchange support,4) npm release & n8n community submission,5) WebSocket triggers (after Polymarket fixes market_resolved events).
Conclusion: Polymarket Tools advances prediction market automation, opening doors for both casual traders (following smart money) and professionals (complex strategies). With AI agent integration, it paves the way for intelligent, autonomous trading in prediction markets.
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