Do I need ASTER to place my first Pro Mode perpetual order?

No, ASTER is not required to fund or submit a standard Pro Mode perpetual order. The documented single-asset route uses USDT as collateral, while eligible assets enter through Multi-Asset Mode. Holding the protocol token and opening a perpetual position are separate actions. The first-position workflow therefore starts with supported collateral on the selected network and a funded Pro balance.

Can email login fund a Pro Mode position on every supported chain?

No, the email-login route is narrower than the Web3 wallet route. It creates an account after a six-digit code and accepts USDT funding on Arbitrum One. Traders who want to connect through BNB Chain, Ethereum or Solana use a compatible wallet such as Rabby, MetaMask or Binance Wallet. The account method and deposit network should be chosen together before funds move.

Is the wallet signature that connects Aster also a perpetual order?

No, the connection signature establishes the Aster session and does not create market exposure. A perpetual order appears only after a market is selected and the side, position mode, order type and quantity are submitted through Pro Mode. This distinction provides a useful first check: a connected wallet without an order record or executed quantity has no position from that interaction.

Can a partially filled entry be closed before the remainder fills?

Yes, the executed portion appears as position size and that amount can be closed separately. Cancel the unfilled entry remainder before submitting the exit if no further exposure is intended. Otherwise, the resting GTC order can continue matching after the partial position closes. Open Orders shows the remaining quantity, while Positions shows only the quantity that has already executed.

Does cancelling an unfilled limit order change the position size?

No, cancelling a completely unfilled limit order removes the pending instruction without changing position size. If the order filled partially before cancellation, the executed portion remains in Positions and only the unfilled remainder disappears from Open Orders. Read executed quantity and average price after cancellation, because the final order status alone does not describe exposure that arose before the cancellation completed.

Are take-profit and stop-loss triggers available on the initial order?

Yes, Pro Mode provides take-profit and stop-loss controls that can accompany an entry. Each trigger can reference either the mark price or the last traded price, giving two distinct activation bases. The mark price also values unrealized PnL, while the last price follows the latest order-book trade. Confirm the trigger basis and exit side before submitting the primary order.

Where should I look when a Reduce-Only exit is rejected?

Start with the existing position side, remaining size and any open exit orders for the same contract. Reduce-Only needs exposure that the order can reduce; an incorrect side, a size already covered by another closing order or a position that has reached zero leaves nothing available for that instruction. Reconcile Positions with Open Orders, then submit only the uncovered remaining size through the appropriate close control.

Aster is a Decentralized Perpetuals Exchange Built Around Order-Book Trading

Updated: August 11, 2026

Aster is an order-book perpetuals DEX whose Pro Mode turns a first trade into a defined sequence: connect an accepted wallet or email account, fund the matching network, choose a perpetual market, set the position controls, submit one long or short order, confirm the fill in Positions and close it with a Reduce-Only order before withdrawing available collateral.

The disciplined route keeps four records aligned: wallet network, Pro account balance, order status and position size. The sections below follow that route from preparation through exit, with the interface checks that prevent a valid action from producing the wrong exposure.

The short version: It is an order-book perpetuals DEX whose Pro Mode suits traders ready to deposit margin, select a market, submit a long or short order, verify the position, and close it with Reduce-Only.

Avoid the wrong network before funding Pro Mode

The most common preparation error is a network mismatch: Aster Pro is a multichain trading account that accepts deposits through four supported environments - BNB Chain, Ethereum, Arbitrum One and Solana.

Select the chain in Aster before connecting Rabby, MetaMask, Binance Wallet or a WalletConnect-compatible wallet. The wallet network and deposit network must match the Pro account choice. Ethereum mainnet uses chain ID 1, BNB Smart Chain uses 56 and Arbitrum One uses 42161; Solana does not use EIP-155 chain IDs. Those identifiers give an objective check in an EVM wallet when several networks display the same USDT ticker. Keep the token standard aligned as well: ERC-20 transfers belong on Ethereum or Arbitrum, BNB Chain uses BEP-20 and Solana uses the SPL Token program.

BNB Chain connections also require at least 0.001 BNB in the wallet. That reserve belongs in the wallet; deposited USDT becomes trading collateral inside Pro.

The Deposit panel asks for three changing fields - the network, token and amount - and the wallet produces one approval step. Wait until Portfolio shows the credited Pro balance before selecting a market. A transaction confirmation proves that the chain accepted the transfer; the portfolio entry proves that Aster credited the trading account. Email login follows a narrower path with a six-digit access code and USDT on Arbitrum One, so it should not be mixed with a wallet-funded route on another chain.

Set the position rules before placing the order

Position configuration is the set of account rules that tells Aster whether exposure shares collateral, whether opposing sides coexist and how much notional value each unit of margin controls.

Choose one-way or Hedge Mode

Aster exposes two position modes. One-way Mode nets BUY and SELL activity into a single position side, while Hedge Mode records LONG and SHORT separately for the same contract. A first position is easier to verify when the chosen mode matches the intended record. In Hedge Mode, the order needs an explicit LONG or SHORT position side; in One-way Mode, the account represents that field as BOTH.

One-way Mode

One-way Mode suits a single directional record. A filled BUY increases a net long or reduces a net short, while a filled SELL does the reverse. Read the post-fill size rather than assuming the button label created a new position.

Hedge Mode

Hedge Mode maintains two ledgers for one contract. An order can target LONG or SHORT, so the position-side selector matters as much as BUY or SELL. Verify both fields before submission because an opposing leg does not automatically cancel the first.

Keep the first margin path simple

Where it matters, Aster presents two account-level collateral modes. Single-asset mode accepts one settlement asset, USDT, and manages margin per position. Multi-asset mode values several eligible assets together and operates only with cross margin. The second choice adds collateral ratios and automatic balance management to the verification task, which creates extra account movement to interpret after one fill. The important operational decision is to set the intended mode before entering the order. Switching context after submission makes the displayed available balance harder to reconcile with the position that already exists. Leverage remains a separate market setting and changes required margin, not order direction.

Which order type should open the first position?

Regardless of the route taken, Aster Pro order types are execution instructions; use a market order when immediate entry matters or a plain limit order when a maximum buy price or minimum sell price matters. Pro lists six entry families: market, limit, stop-limit, stop-market, trailing stop and Post-Only. A stop-limit uses two prices. For limits, three time-in-force choices apply: GTC waits, IOC cancels the immediate remainder and FOK requires a complete immediate fill. One primary order keeps the first position readable.

Stage 6 Convergence text beside golden coin

Submit one controlled long or short order

Order submission is the point where Aster converts a selected contract, side, position mode, quantity and execution instruction into an active order record for the matching engine.

Before submission, read five aligned inputs from the preview: BTCUSDT contract, BUY or SELL side, LONG or SHORT position side where Hedge Mode applies, order type and quantity. The interface offers two order sides, but the side alone does not describe the final exposure under every position mode. A BUY can open or enlarge a long and can also reduce a short in a netted account. Leverage changes the margin reserved for the selected notional; it does not change the number of contracts requested. Keep the first action to one market and one direction so the resulting record has an obvious origin.

In the common configuration, Aster rejects new orders below 5 USDT notional, while Reduce-Only orders receive an exception. Symbol tick size and quantity step still govern valid price and size precision.

Worked entry example

All changing inputs in this worked example are hypothetical: BTCUSDT mark price of 60,000 USDT, limit price of 59,900 USDT, quantity of 0.002 BTC and leverage of 2x.

If the limit order fills completely at 59,900, the position notional equals 0.002 × 59,900, or 119.80 USDT. At 2x, the initial margin component equals 119.80 ÷ 2, or 59.90 USDT, before any other account adjustments. The Positions row should then show a 0.002 BTC long with a 59,900 USDT entry price. A partial fill would replace those final position figures with the executed quantity and average price. The same ground is broken down in Aster inside security steps.

After pressing the long or short action, do not infer success from a button state. The order belongs in Open Orders until execution; only executed quantity belongs in Positions. That boundary is the verification handoff.

Read the order and position as separate records

Order and position verification is a two-record reconciliation in Aster Pro: the order reports execution progress, while the position reports the exposure that actually reached the account.

Start with the order status. Aster defines six core status values: NEW, PARTIALLY_FILLED, FILLED, CANCELED, REJECTED and EXPIRED. NEW with zero executed quantity means no position came from that order. PARTIALLY_FILLED means the position reflects only the executed portion while a remainder may stay open under GTC. FILLED means the requested quantity executed, although several fills may combine into one average entry price. Then compare the contract, position side, size, entry price and leverage in Positions. A mismatch between requested and displayed quantity usually reflects a partial fill or an existing position that the new trade changed.

Underneath that, Aster calculates the mark price as the median of three values and samples the bid-and-ask midpoint once per minute across a five-minute moving-average window. The Positions row uses that mark price for unrealized PnL, while the last price records the latest order-book trade. Those two references answer different verification questions: where the market last traded and how the account values open exposure.

Verification ends only when position size, entry price and side agree with executed quantity. A pending order remains separate exposure-in-waiting and should stay visible in Open Orders.

How do you close the position without reversing it?

Reduce-Only is Aster’s exit modifier for an opposing order, and it closes all or part of an existing position without allowing that order to create larger reverse exposure.

From Positions, choose a market or limit close and set the quantity. Closing a long uses SELL; closing a short uses BUY. In Hedge Mode, use the close control for the selected leg. In One-way Mode, keep Reduce-Only active for an exit submitted through the order panel. A market close prioritizes immediate execution, while a limit close remains in Open Orders until matching liquidity reaches its price.

A full close targets 100% of the displayed position size. A partial close targets less and leaves the remainder visible. After execution, check for a zero position before treating the trade as complete, then cancel any unfilled exit remainder that no longer serves the plan. Reduce-Only limits the order to the existing size, so an oversized exit does not become a fresh position in the other direction.

Withdrawal is the final account operation. The panel asks for three fields - network, token and amount - followed by one wallet approval. USDT is the settlement asset, and any negative token balance must be rebalanced before withdrawal. The interface exposes two direct steps for that route, Withdraw and Rebalance, or the exact asset can be deposited to cover the balance. The workflow is complete when the position reads zero, Open Orders contains no leftover exit and withdrawn collateral arrives on the selected network.

Aster: questions and answers

Do I need ASTER to place my first Pro Mode perpetual order?: No, ASTER is not required to fund or submit a standard Pro Mode perpetual order. The documented single-asset route uses USDT as collateral, while eligible assets enter through Multi-Asset Mode. Holding the protocol token and opening a perpetual position are separate actions. The first-position workflow therefore starts with supported collateral on the selected network and a funded Pro balance.
Can email login fund a Pro Mode position on every supported chain?: No, the email-login route is narrower than the Web3 wallet route. It creates an account after a six-digit code and accepts USDT funding on Arbitrum One. Traders who want to connect through BNB Chain, Ethereum or Solana use a compatible wallet such as Rabby, MetaMask or Binance Wallet. The account method and deposit network should be chosen together before funds move.
Is the wallet signature that connects Aster also a perpetual order?: No, the connection signature establishes the Aster session and does not create market exposure. A perpetual order appears only after a market is selected and the side, position mode, order type and quantity are submitted through Pro Mode. This distinction provides a useful first check: a connected wallet without an order record or executed quantity has no position from that interaction.
Can a partially filled entry be closed before the remainder fills?: Yes, the executed portion appears as position size and that amount can be closed separately. Cancel the unfilled entry remainder before submitting the exit if no further exposure is intended. Otherwise, the resting GTC order can continue matching after the partial position closes. Open Orders shows the remaining quantity, while Positions shows only the quantity that has already executed.
Does cancelling an unfilled limit order change the position size?: No, cancelling a completely unfilled limit order removes the pending instruction without changing position size. If the order filled partially before cancellation, the executed portion remains in Positions and only the unfilled remainder disappears from Open Orders. Read executed quantity and average price after cancellation, because the final order status alone does not describe exposure that arose before the cancellation completed.
Are take-profit and stop-loss triggers available on the initial order?: Yes, Pro Mode provides take-profit and stop-loss controls that can accompany an entry. Each trigger can reference either the mark price or the last traded price, giving two distinct activation bases. The mark price also values unrealized PnL, while the last price follows the latest order-book trade. Confirm the trigger basis and exit side before submitting the primary order.
Where should I look when a Reduce-Only exit is rejected?: Start with the existing position side, remaining size and any open exit orders for the same contract. Reduce-Only needs exposure that the order can reduce; an incorrect side, a size already covered by another closing order or a position that has reached zero leaves nothing available for that instruction. Reconcile Positions with Open Orders, then submit only the uncovered remaining size through the appropriate close control.