ETH-PERP Mark
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Perpetuals streamed straight from live on-chain order books. Open any market to see the full terminal.
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Prices from public on-chain market data. Not investment advice.
Detion turns deep on-chain liquidity into a fast, readable terminal for options and perpetuals.

Every expiry and strike with bid, ask, mark, implied volatility and delta, updating as the order books move.

Candles, depth, trade feed, funding and open interest for each perp market, from five minutes to a year.

Max loss, break-even and a payoff curve for the size you type, plus delta, gamma, theta and vega.

Limit, market and post-only orders with margin, buying power and fee estimates before you commit.

Connect a wallet and link your trading account to see balances, positions, orders and trade history.

Orders are signed in your wallet and settled on-chain. Detion never holds your keys or your funds.
Detion models every position as you size it, so risk is a number on screen instead of a surprise at expiry.

Long call, held to expiry
Illustrative example
01
Browse every options underlying and perp market. No account or wallet needed to look around.
02
Size an order and watch max loss, break-even, Greeks, fees and margin update as you type.
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Detion opens the same market in the trading app. You choose the contract, then sign and settle with your own wallet.
Detion is the terminal. Orders settle on the underlying protocol, so its fees are the only fees on a trade.
Detion terminal
Free
Trading fees
Protocol rates
Custody
None
Every link opens the terminal on a live market, or the guides behind it.
Short guides on the ideas behind the numbers in the terminal.

Each row is a strike, with calls on one side and puts on the other. Bid and ask show where you can trade right now, mark is the fair price, and delta is roughly how much the option moves when the underlying moves by one dollar.
Read the guide
A perpetual never expires, so a funding payment nudges its price toward the index. When funding is positive, longs pay shorts. When it is negative, shorts pay longs. Detion shows the hourly rate on every perp.
Read the guide
Buying an option caps your loss at the premium you pay. The payoff curve shows profit or loss at expiry across prices, and the break-even is the strike plus the premium for a call, or minus it for a put.
Read the guide
Detion shows you the market and the math, then opens the same market in the trading app. You choose the contract there and place and sign the order with your own wallet.
No. Detion is non-custodial. It reads public market data and, if you link an account, reads your address to show balances and positions. It never asks for a transaction.
Directly from live on-chain order books over a WebSocket: instruments, tickers, order books, trades and index candles. If the connection drops, Detion reconnects and restores its subscriptions.
Connect a browser wallet, enter your trading account address, and sign a timestamp. That opens a read-only session. It cannot place orders or move funds.
They are estimates built from the protocol’s published model, so you can compare trades quickly. The protocol sets the final fees and margin when an order is placed.
Open the terminal and watch options and perps markets move in real time.