Documentation Index
Fetch the complete documentation index at: https://docs.predexon.com/llms.txt
Use this file to discover all available pages before exploring further.
Start building with Predexon.
Query, stream, and trade prediction markets across Polymarket, Kalshi, Limitless, Opinion, Predict.fun, Dflow, and Hyperliquid, through a single normalized API.Get an API key
Quickstart
API Reference
Your first call
Pick your path
I want market data
Markets, prices, candlesticks, orderbooks, trades, positions, P&L, smart money. Most endpoints are free and unlimited.List markets · Candlesticks · Wallet P&L
I want to place orders
Trade Polymarket, Predict.fun, Opinion, Limitless, and Hyperliquid through one endpoint. We hold the keys, you hold an API key.Create account · Place order · Fees & monetization
I want real-time data
Live trades, L2 orderbooks, position activity, oracle events, and Chainlink crypto feeds. Pending-trade detection 3 to 5 seconds before confirmation.WebSocket overview · Pending trades · Orderbook
I'm building an AI agent
Drop the MCP server into Claude, Cursor, or your own stack. 43 tools across every venue.MCP server · x402 (Blockrun)
Capabilities
Markets
Search, list, and inspect markets across 7 venues. Filter by status, volume, category, or
predexon_id.Pricing & history
OHLCV candlesticks (1m to 1d, auto-fit), volume curves, open interest, orderbook snapshots.
Trades & activity
Full historical trades plus splits, merges, redemptions, and NegRisk conversions.
Wallets
Positions, realized + unrealized P&L, identity, profile tags, and connected-wallet clusters.
Smart money
Profitable-wallet positioning, top holders, smart-activity-per-market, and similar-wallet discovery.
Leaderboards
Global and per-market wallet rankings, cohort stats, filter by ROI, volume, or win rate.
Cross-venue matching
Find the same event on Polymarket, Kalshi, and Limitless. Pre-computed pairs with similarity scores.
Trading
Limit + market orders, position management, deposit and withdraw, partner fees. No wallet to manage.
Recipes
Concrete tasks with one-line answers. Each links to the full reference.List trending markets
GET /v2/polymarket/markets?sort=volumeSearch across venues
GET /v2/markets/search?q=trumpGet current price
GET /v2/polymarket/market-price/{token_id}Fetch OHLCV candles
GET /v2/polymarket/candlesticks/{condition_id}Stream live trades
Subscribe to
type: "orders" on the WebSocket.Detect pending trades
Set
filters.status: "pending" on the trades channel.Find an arbitrage pair
GET /v2/matching-markets/pairs?min_similarity=98Get smart money signal
GET /v2/polymarket/market/{condition_id}/smart-moneyGet wallet P&L (free)
GET /v2/polymarket/wallet/pnl/{wallet}Place a market order
POST /api/accounts/{accountId}/ordersCheck account balance
GET /api/accounts/{accountId}/balanceStream crypto prices
Subscribe with
platform: "chainlink", type: "crypto".Coverage
| Venue | Market data | Real-time | Trading |
|---|---|---|---|
| Polymarket | ✓ | ✓ | ✓ |
| Kalshi | ✓ | ✗ | ✗ |
| Limitless | ✓ | ✗ | ✓ |
| Opinion | ✓ | ✗ | ✓ |
| Predict.fun | ✓ | ✗ | ✓ |
| Hyperliquid | ✗ | ✗ | ✓ |
| Dflow | ✓ | ✗ | ✗ |
| Binance (crypto reference) | ✓ | ✗ | ✗ |
| Chainlink Data Streams | ✗ | ✓ | ✗ |
Pricing at a glance
| Free | Dev | Pro | Enterprise | |
|---|---|---|---|---|
| Price | $0/mo | $49/mo | $249/mo | $499+/mo |
| Rate limit | 1 req/s | 20 req/s | 100 req/s | Custom |
| Monthly requests | 1,000 | 1M | 5M | Unlimited |
| Overage | ✗ | $5 / 100K | $2.50 / 100K | Custom |
| WebSocket | ✗ | 10 subs × 10 items | 100 subs × 500 items, wildcards | Custom |
| Smart Money & Matching | ✗ | ✓ | ✓ | ✓ |
| Trading API | ✓ | ✓ | ✓ | ✓ |
Need help?
Join Discord
Active community, direct line to the team.
Email the team
Enterprise, partnerships, anything else:
team@predexon.com.