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The 0xinsider API gives you analytics on Polymarket traders and markets. Use it to check a wallet’s trading record, see who holds each side of a market, read large trades, or follow the Pick of the Day. The API returns data. Your application decides how to display it or act on it.

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Try it without an account

The sandbox returns example responses without an API key:
This is sample data, so you can explore the response format before subscribing. Try the sandbox also explains how to request example errors. For real public data, read the pick commitment ledger:
The ledger lists published picks and their proof status. Some entries are sealed, some are opened after settlement, and some are uncommitted; the ledger reference explains what each state proves. Most live data requires a Pro or Max subscription and an API key or OAuth token. Follow the Quickstart to make your first authenticated request.

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Find the data you need

A wallet grade describes its trading record. A flagged trade calls for review. Neither tells you that a future trade will make money.

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Choose an interface

Use REST directly or choose a client for your application. They read the same API data; your account’s rate limits apply across interfaces. For event notifications, use webhooks on a public HTTPS server or the Server-Sent Events stream on a persistent connection.
For an AI agent, use llms-full.txt or agents.md for the API contract.

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Know the limits

  • Every provider row is from Polymarket. platform is always polymarket.
  • The API does not place trades or hold a wallet key. potd-trader is a separate program you run with your own wallet.
  • A market snapshot has best bid, best ask, spread, and depth per outcome. It is not a full order book.
  • Market candles use stored daily snapshots at 1d or 1w intervals. They do not provide intraday prices.
  • Missing or unsynchronized data needs a status check before you use it. Start with trust metadata and missing numbers.

Make your first request

Get a key and read live data.

Browse the API reference

Find request parameters, response fields, and error handling.