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The 0xinsider API gives you programmatic access to the same intelligence powering the 0xinsider terminal — trader grades, whale trade signals, smart money flow, and insider detection across Polymarket and Kalshi.

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What you can build

  • Trading bots that react to whale trades and smart money signals in real-time
  • AI agents that analyze trader performance and market intelligence
  • Research tools that pull leaderboard data and historical patterns
  • Dashboards that visualize smart money flow across prediction markets

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Endpoints

Get Trader

Trader grades (S through F), P&L, win rate, strategy detection

Whale Trades

Large trades with signal scoring, filterable by grade and category

Market Intel

Smart money flow direction, buy/sell volumes, top positions

Leaderboard

Top traders ranked by score with cursor pagination

Search Markets

Find markets by keyword with category and status filters

Insider Radar

Suspicious trading patterns — pre-resolution accumulation, unusual timing

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Quick example

curl -H "Authorization: Bearer oxi_sk_test_..." \
  https://api.0xinsider.com/api/v1/leaderboard?limit=3

{
  "object": "list",
  "data": [
    {
      "id": "trd_0x863...",
      "username": "RepTrump",
      "grade": "S",
      "score": 97.94,
      "pnl": 7532409.67,
      "win_rate": 1.0
    }
  ],
  "has_more": true,
  "next_cursor": "97.94_0x863..."
}

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Base URL

https://api.0xinsider.com/api/v1/

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Authentication

API access is bundled with the Insider subscription ($89/mo). Generate your API key at 0xinsider.com/developers.

Get started

Generate a key and make your first request in 2 minutes