- Order-book mode captures the bid-ask spread INSIDE one exchange’s order book: you post a limit buy at the bid, then a limit sell at the ask, earning the gap as a maker.
- Unlike the cross-exchange modes, this is one venue and NOT delta-neutral — you hold the coin as inventory between the two fills, so a falling price is a real loss.
- It lives on small-cap, low-liquidity coins with wide spreads. The big risks: a price drop while you hold, fake (“painted”) volume, and HFT bots that out-queue you. Best for small deposits.
Order-book mode is a different kind of arbitrage from the other three. There is no second exchange and no funding rate — you make money inside a single order book by being a market maker: you post a limit buy at (or just above) the best bid, and once it fills you post a limit sell at (or just below) the best ask. The difference between the two — the bid-ask spread — is your gross profit; subtract the maker fee on both fills and what’s left is your edge. On thin, small-cap coins that spread can be several percent.
How is this different from Current / Daily / Funding?
The Current and Daily modes trade a spread BETWEEN two exchanges that closes; Funding earns the perpetual funding rate delta-neutrally. Order-book mode is single-venue and directional in inventory: between buying and selling you actually hold the coin, so if the price falls before your sell fills, you lose. It is hands-on manual market-making, ideal for a small deposit ($100–3000) where you can make a few percent a day if you pick the right coins.
How do I read a book card?
- Net-edge badge — the headline: the book spread minus the maker fee on BOTH fills (buy + sell). This is what you actually keep per completed round-trip. If it’s not clearly positive, the spread doesn’t cover the fees.
- Book spread + maker fee — the raw bid-ask gap and the venue’s maker fee (your real tier when an API key is connected).
- Construction — exactly what to do: “Buy limit ≈ <bid> → Sell limit ≈ <ask>” on the one venue (links to its trade page).
- Price behaviour (24h change + volatility) — the trend matters a lot here (see below). On a downtrend the card nudges you to hedge.
- Calculator — your capital and an estimate of how many full buy→sell round-trips you complete per day → the captured spread, fees, net per round-trip, and a projected daily yield.
- Volume / wash check — a suspicion level from how even the 24h volume bars are (see “fake volume” below).
- Top depth + flow — USDT resting at the top of book and the average traded volume per hour (a rough fill-speed sense).
- Persistence chart (7d) — whether the wide spread is chronic (a real opportunity) or a one-off blip.
Which coins should I look for?
| Criterion | What to want | Why |
|---|---|---|
| 24h volume | Real volume from ~$30k up | Too thin and your order sits unfilled for hours |
| Trend | Sideways or rising | On a downtrend your held inventory loses value — hedge with a short perp or skip |
| Volatility | Some intraday movement (~3%) | Movement bounces price between bid and ask, filling both sides faster |
| Competition | No HFT bots out-queueing you | Bots that instantly re-quote in front of you make manual making pointless |
| Spread | Wide vs the maker fee | The spread must comfortably exceed 2× the maker fee to net a profit |
Big exchanges (Binance) and BTC pairs usually have razor-thin, crowded books — the spread lives on mid- and small-cap alts on the smaller venues. Only USDT pairs are scanned for now; some of the widest spreads sit in USDC / BTC-quote pairs, which are not covered yet.
How do I spot fake (“painted”) volume?
Exchanges and projects often fake activity on illiquid pairs (“wash trading” / “рисовка”). A coin can show a healthy 24h volume that is entirely manufactured — and if the volume is fake, your maker order may never fill no matter how good your price. CryptoCline flags the most detectable tell automatically and leaves the rest to a manual check:
- Even volume bars (auto) — the card’s “Volume” signal measures how regular the 24h volume bars are. Real markets are bursty; painted volume is suspiciously even. A “suspicious” level is a warning, not a verdict.
- Trade history (manual) — open the exchange’s recent-trades feed. Wash trades tend to print at regular intervals (every 5–20s) and near-identical sizes (e.g. always ~$50–60).
- The decisive test (manual, while trading) — if trades keep printing at your price or better but your order, sitting first in the queue, does NOT fill, the volume is 100% fake. Cancel and move on.
What are the risks?
- Price falls while you hold — the main risk. You bought and are waiting to sell; if the coin drops, cut the loss. An arbitrageur is not a long-term investor hoping for a bounce. On a downtrend, hedge the inventory with a short perp (the card suggests this when a perp exists on the venue).
- Low liquidity — a wrong volume read means your order takes too long to fill; capital sits idle.
- HFT competition — bots that re-quote in front of you make manual making unprofitable; common on large venues.
- Fake volume — covered above; the decisive test is that real prints don’t fill your queued order.
Step-by-step: find a wide-spread pair → check real 24h volume and screen for fake volume in the trade history → check the chart for volatility and no sharp drop → post a limit buy at the best bid (be first in the queue) → once filled, post a limit sell accounting for the spread → if the price turns against you, cut the loss instead of waiting.
This is manual market-making with real inventory risk: you hold the coin between the buy and the sell, so the price can move against you. Spreads, depth and volume shift constantly, and fake volume is common on thin coins. Figures shown are estimates at the current top of book. Not financial advice.