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Overview

purple.trade offers on-chain perpetual futures with up to 10x leverage. Every trade settles in a single Solana transaction — no off-chain matching, no sequencer delays.

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Getting Started

1

Connect your wallet

Visit purple.trade and connect your Solana wallet (Solflare supported).
2

Select a market

Choose from available perpetual markets on the home page. Each market shows live price, 24h volume, and open interest.
3

Open a position

Select your direction (Long or Short), set your collateral amount and leverage (1x–10x), then submit the trade.

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Inverted Perpetuals

purple.trade uses an inverted perpetual model. The token being traded is the collateral — no borrowing, no synthetics.
ActionWhat it means
Long tokenYou expect the token price to go up. In the inverted engine this maps to a short position.
Short tokenYou expect the token price to go down. In the inverted engine this maps to a long position.
The inversion is handled automatically by the UI — you just pick “Long” or “Short” on the token.

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Margin & Leverage

ParameterValue
Max leverage10x
Initial margin10% (1000 bps)
Maintenance margin5% (500 bps)
Trading fee0.1% (10 bps) per trade
Positions below maintenance margin are subject to liquidation. Under-leveraged positions (leverage < 1x) are valid and represent over-collateralized trades.

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Atomic Crank + Trade

Every trade transaction includes an atomic KeeperCrank instruction before the trade instruction. This ensures:
  1. The oracle price is fresh (within max_crank_staleness_slots)
  2. Risk engine state is up to date
  3. No separate keeper infrastructure is needed
If the crank is stale, the transaction fails with EngineUnauthorized (error 0xf) — this is a freshness check, not an authorization error. 
TX = [SetComputeUnitLimit(400_000)] + [KeeperCrank] + [TradeCpi]

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Position Management

Once a position is open, you can:
  • Increase: Add more collateral or increase leverage
  • Decrease: Reduce position size (partial close)
  • Close: Exit the entire position
  • Deposit collateral: Add margin without changing position size
  • Withdraw collateral: Remove excess margin (must stay above initial margin)

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Real-Time Data

purple.trade’s backend provides:
  • Price ticks: 10-second interval oracle price updates
  • OHLCV candles: 1m, 5m, 15m, 1h, 4h, 1d timeframes
  • Trade detection: Automatic detection of opens, closes, increases, decreases, and liquidations
  • Position sync: On-chain position data with computed PnL, margin ratio, and liquidation price

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Fees

Fee typeRate
Trading fee0.1% of notional
Funding rateContinuous, based on mark vs index price divergence
Network fee~0.005 SOL per transaction
There are no deposit or withdrawal fees beyond Solana network costs.