Last updated: March 2026
Best Polymarket APIs & SDKs (2026)
Building on Polymarket starts with the right SDK or API wrapper. The best tools abstract authentication complexity, handle WebSocket reconnection, and come with clear documentation so you spend less time on boilerplate and more time building. This page ranks the top Polymarket API clients and SDKs across Python, TypeScript, and other languages.
Top 5 Picks
Poly SDK
ActivePoly SDK is a unified TypeScript SDK for Polymarket that helps developers build polymarket api tools, trading systems, analytics dashboards, and automation workflows.
Polymarket Docs
ActiveOfficial Polymarket developer documentation: CLOB, market discovery, trading, resolution, and data feeds.
Polymarket Builder Codes
ActiveProgram for third-party apps to access Polymarket orderbooks/markets/liquidity (builder integrations).
Dome
ActiveDeveloper infrastructure platform providing unified APIs and SDKs for accessing real-time and historical prediction market data across multiple platforms.
Polymarket Embeds (Substack partnership)
ActiveEmbeddable Polymarket odds widgets for publishers (e.g., Substack) to display real-time market probabilities.
Find the Right SDK
| You are building with... | Best match |
|---|---|
| Python (trading bot) | Official py-clob-client or Python CLOB wrappers |
| TypeScript / Node.js | TS SDK tagged "typescript" + "clob-api" |
| Market discovery only | Gamma API clients (no auth required) |
| Portfolio / analytics only | Data API wrappers |
How We Rank API Tools
API Coverage
Supports CLOB, Gamma, Data API, and WebSocket
Documentation
Clear examples, method references, and guides
Maintenance
Recent updates tracking Polymarket API changes
Community Usage
Adoption, GitHub stars, and community trust