Polymarket Comprehensive Skill

Complete assistance with Polymarket development - covering the full platform (API, trading, market data) and the real-time data streaming client (WebSocket subscriptions for live market activity).

When to Use This Skill

This skill should be triggered when:

Platform & API:

• Working with Polymarket prediction markets
• Using Polymarket API for market data
• Implementing trading strategies
• Building applications with Polymarket services
• Learning Polymarket best practices

Real-Time Data Streaming:

• Connecting to Polymarket's WebSocket service
• Building prediction market monitoring tools
• Processing live trades, orders, and market updates
• Monitoring market comments and social reactions
• Tracking RFQ (Request for Quote) activity
• Integrating crypto price feeds

Quick Reference

Real-Time Data Client Setup

Installation:

npm install @polymarket/real-time-data-client

Basic Usage:

import { RealTimeDataClient } from "@polymarket/real-time-data-client";

const onMessage = (message: Message): void => {
    console.log(message.topic, message.type, message.payload);
};

const onConnect = (client: RealTimeDataClient): void => {
    client.subscribe({
        subscriptions: [{
            topic: "activity",
            type: "trades"
        }]
    });
};

new RealTimeDataClient({ onMessage, onConnect }).connect();

Supported WebSocket Topics

1. Activity (activity)

• trades - Completed trades
• orders_matched - Order matching events
• Filters: {"event_slug":"string"} OR {"market_slug":"string"}

2. Comments (comments)

• comment_created, comment_removed
• reaction_created, reaction_removed
• Filters: {"parentEntityID":number,"parentEntityType":"Event"}

3. RFQ (rfq)

• Request/Quote lifecycle events
• No filters, no auth required

4. Crypto Prices (crypto_prices, crypto_prices_chainlink)

• update - Real-time price feeds
• Filters: {"symbol":"BTC"} (optional)

5. CLOB User (clob_user) ⚠️ Requires Auth

• order - User's order updates
• trade - User's trade executions

6. CLOB Market (clob_market)

• price_change - Price movements
• agg_orderbook - Aggregated order book
• last_trade_price - Latest prices
• market_created, market_resolved

Authentication for User Data

client.subscribe({
    subscriptions: [{
        topic: "clob_user",
        type: "*",
        clob_auth: {
            key: "your-api-key",
            secret: "your-api-secret",
            passphrase: "your-passphrase"
        }
    }]
});

Common Use Cases

Monitor Specific Market:

client.subscribe({
    subscriptions: [{
        topic: "activity",
        type: "trades",
        filters: `{"market_slug":"btc-above-100k-2024"}`
    }]
});

Track Multiple Markets:

client.subscribe({
    subscriptions: [{
        topic: "clob_market",
        type: "price_change",
        filters: `["100","101","102"]`
    }]
});

Monitor Event Comments:

client.subscribe({
    subscriptions: [{
        topic: "comments",
        type: "*",
        filters: `{"parentEntityID":12345,"parentEntityType":"Event"}`
    }]
});

Reference Files

This skill includes comprehensive documentation in references/:

Platform Documentation:

• api.md - Polymarket API documentation
• getting_started.md - Getting started guide
• guides.md - Development guides
• learn.md - Learning resources
• trading.md - Trading documentation
• other.md - Additional resources

Real-Time Client:

• README.md - WebSocket client API and examples
• llms.md - LLM integration guide
• llms-full.md - Complete LLM documentation

Use view to read specific reference files for detailed information.

Key Features

Platform Capabilities: ✅ Prediction market creation and resolution ✅ Trading API (REST & WebSocket) ✅ Market data queries ✅ User portfolio management ✅ Event and market discovery

Real-Time Streaming: ✅ WebSocket-based persistent connections ✅ Topic-based subscriptions ✅ Dynamic subscription management ✅ Filter support for targeted data ✅ User authentication for private data ✅ TypeScript with full type safety ✅ Initial data dumps on connection

Best Practices

WebSocket Connection Management

• Use onConnect callback for subscriptions
• Implement reconnection logic for production
• Clean up with disconnect() when done
• Handle authentication errors gracefully

Subscription Strategy

• Use wildcards ("*") sparingly
• Apply filters to reduce data volume
• Unsubscribe from unused streams
• Process messages asynchronously

Performance

• Consider batching high-frequency data
• Use filters to minimize client processing
• Validate message payloads before use

Requirements

• Node.js: 14+ recommended
• TypeScript: Optional but recommended
• Package Manager: npm or yarn

Resources

Official Links

• Polymarket Platform: https://polymarket.com
• Real-Time Client Repo: https://github.com/Polymarket/real-time-data-client
• API Documentation: See references/api.md

Working with This Skill

For Beginners: Start with getting_started.md for foundational concepts.

For API Integration: Use api.md and trading.md for REST API details.

For Real-Time Data: Use README.md for WebSocket client implementation.

For LLM Integration: Use llms.md and llms-full.md for AI/ML use cases.

Notes

• Real-Time Client is TypeScript/JavaScript (not Python)
• Some WebSocket topics require authentication
• Use filters to manage message volume effectively
• All timestamps are Unix timestamps
• Market IDs are strings (e.g., "100", "101")
• Platform documentation covers both REST API and WebSocket usage

This comprehensive skill combines Polymarket platform expertise with real-time data streaming capabilities!