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Radion is an API for Polymarket data. We run our own on-chain indexer. We read Polymarket’s smart contracts straight from the blockchain and turn the raw events into clean, ready-to-use data. You get markets, events, search, and orderbooks — all from one place.

Quickstart

Get your API key and make your first request in under 5 minutes.

Onchain Data

Learn how Radion reads Polymarket contract events and mempool transactions.

Use Radion with AI

Connect Radion to Claude, Cursor, and other AI tools via MCP.

API Reference

Endpoints, schemas, authentication, and rate limits.

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How it works

1

Read the chain

We watch Polymarket’s smart contracts on Polygon. Every trade, position change, and market event is read straight from the blockchain.
2

Build clean data

We turn the raw chain events into a tidy read model: markets, events, search, and order books. No raw logs to parse yourself.
3

Read via API

Pull the data with the REST API, or stream it live over WebSockets. Use it in your tools, dashboards, or bots.
Last modified on July 3, 2026