ArcusHow it works
How a Market Maker Bot works on Arcus
A market maker bot rests buy and sell limit orders on both sides of the order book, a little below and above the market price. When both sides fill, it earns the gap between them. It adjusts its quotes as its position builds, making the orders that reduce exposure more competitive and scaling back the side that would add to it.
On Coinner you pick a strategy: Spread works back toward a flat position, while Directional leans long or short, either from market signals or in a direction you choose. You set order size, max position, minimum edge, spread and stop loss, and the bot quotes on Arcus in the cloud 24/7, widening its quotes when volatility rises and pausing if reference prices from other exchanges look stale.
Best for
When to use the Arcus Market Maker Bot
The Arcus market maker bot is best for liquid Arcus markets where you want to earn the spread with a hard cap on how much position the bot can hold. It runs in the cloud on Coinner, so it keeps working 24/7 without you leaving a machine on.
At a glance
Arcus key facts
Markets
What you can trade with the Arcus Market Maker Bot
Coinner bots trade Arcus perpetuals across four asset classes from one account and USDG collateral balance. You can go long or short crypto, stock, commodity ETF, and index ETF perps around the clock.
| Asset class | Examples | Notes |
|---|---|---|
| Crypto perps | BTC, ETH, SOL | Available for 24/7 trading |
| Single-stock perps | NVDA, TSLA, AAPL | Trade 24/7, even when the US stock market is closed |
| Commodity ETF perps | GLD, SLV, USO | Gold, silver, and oil exposure |
| Index ETF perps | SPY, QQQ | Broad-market exposure |
Getting started
Set up your Arcus Market Maker Bot
- Authorize a trade-only Coinner API key for Arcus with your wallet signature
- Go to Market Maker Bots in your Coinner dashboard and select Create Bot
- Choose the Arcus market to quote on, starting with a liquid one
- Choose a strategy: Spread, Directional with signal, or Directional manual
- Set the order size and max position
- Set the minimum edge, spread and stop loss, then start the bot
More bots
Other bots for Arcus
FAQ
Frequently asked questions
Can I run a market maker bot on Arcus?
Yes. Coinner runs automated market maker bots on Arcus perpetual markets. Choose a market and strategy, set your order size and max position, and the bot quotes both sides of the book for you 24/7.
Why does the market maker run on Arcus but not every venue?
A market maker needs post-only orders, so its entries never pay taker fees by accident, and a dead man's switch that cancels its resting quotes if the bot's process stops. Arcus supports both. On Coinner today that means Arcus and Aster.
How much do I need to start a market maker bot on Arcus?
Your Arcus account needs more than $200 in it to create a market maker bot. Max position is your real risk limit, so set it to an amount you would be comfortable holding.
Is the Arcus market maker bot free to use?
Yes. Coinner bots are free to run, with no subscription. Coinner earns a share of exchange trading fees, which keeps the bots free for you.
Do my funds stay in my own Arcus account?
Yes. Coinner is fully self-custodial. Its trade-only connection can place and cancel orders but can never withdraw, so your funds never leave your Arcus account.
Ready to run a Market Maker Bot on Arcus?
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