3Commas Trading Bot: Setup, Fees, Limits and Risk
3Commas is a third-party automation platform. You connect a crypto exchange through an API key and run bots such as DCA and grid on that venue. It does not hold your coins, it is not a broker, and it does not remove market risk. Fees, API permissions and parameter mistakes still sit with you.
What the platform actually runs
3Commas sits between you and an exchange. You create a bot on their site, set rules, and their servers send orders through your API. Common types are DCA (dollar-cost average into a dip with a max number of safety orders), grid (buy and sell inside a range with a fixed number of levels), and signal or SmartTrade style orders that follow an alert or a manual template. Paper mode exists on many accounts so you can test without live size.
It does not replace chart work. Structure, sessions and invalidation still matter. A bot will keep firing while the market is in a trend against your range or while an exchange is lagging. Treat every bot as a rules engine, not a forecast.
Typical costs you will actually pay
3Commas itself is usually a subscription. Paid tiers commonly sit in a roughly $20 to $80 per month band depending on how many bots, exchanges and extras you unlock; confirm the live table on their site because add-ons and annual billing change the number. That fee is on top of exchange trading fees (often around 0.02% to 0.10% per fill on major crypto venues, plus any spread). There is no one-time lifetime licence for the core product in the usual plans.
If you run many small grids, fee drag adds up faster than on a handful of larger DCA deals. Always add both layers before you judge a backtest.
Bot types and the numbers that matter
DCA: you set a base order, a price deviation for each safety order, a max number of safety orders, and a take-profit. Typical retail setups use 3 to 10 safety orders and a deviation of 1% to 3% per step. The risk is inventory: if price keeps falling you can hit the max deals and sit in a large underwater bag.
Grid: you set an upper and lower bound, a number of grids (often 10 to 80), and whether the grid is arithmetic or geometric. Profit per completed round trip is small; you need range-bound price and enough volume. A break of the range leaves you with inventory on one side.
Signal or template trades: useful when you already have a clear invalidation. They do not invent an edge. If the signal is late or the API is slow, slippage eats the idea.
| Type | Typical parameters to set | Main failure mode |
|---|---|---|
| DCA | Base size, safety count, deviation, TP | Max deals hit in a trend |
| Grid | Range, grid count, order size | Range break, fee drag |
| Signal / SmartTrade | Entry, stop, targets, trailing | Late fill, API lag |
Setup steps that actually reduce mistakes
- Open a 3Commas account and enable 2FA on both 3Commas and the exchange.
- Create an exchange API key with trade permission only. Do not enable withdrawal. Restrict by IP if the platform supports it.
- Connect the key and confirm balances read correctly in paper or a tiny live size.
- Pick one bot type and one pair. Write the invalidation (range break, max deals, daily loss cap) before you start.
- Run paper for enough bars to see at least one full cycle and one failed cycle.
- Go live with size you can lose. Log every change to parameters.
- Set exchange and 3Commas notification so a stuck order or API error is not silent.
Do not skip paper. Grid and DCA look smooth in a sideways sample and ugly in a 20% trend.
API, permissions and operational risk
The usual failure is not “the bot went rogue” so much as a key with withdrawal rights, a leaked key, or an exchange outage while orders are open. Keep keys trade-only. Rotate them if you change devices. If 3Commas or the exchange has downtime, your open bots may not cancel or hedge. You need a manual path: exchange app, cancel-all, and a written max loss.
Position size still follows your own risk rule. A bot that averages down can exceed the 0.5% to 1% of equity many retail traders use per idea unless you cap total deals in quote currency.
What to verify before you connect live size
- Current subscription price and which features sit behind which tier.
- Supported exchanges and whether your venue’s API supports the order types the bot needs.
- Paper trading available on your plan.
- How you stop all bots in one click.
- Whether trailing, stop-loss and take-profit are exchange-native or software-side (software-side can fail if the connection drops).
- Fee schedule on the exchange at your volume tier.
Trading involves risk of loss. Past bot results, including paper results, are not a forecast. Indicators and bots are analysis and decision-support tools only.
Many traders keep structure, FVG and session work on the chart while the bot only executes a written rule. ZynIQ sells one-time purchase Pine Script v6 indicators for that chart work (Lite from $29) and also offers a trading bot; neither replaces risk limits or exchange due diligence.
Honest limits versus a fully manual book
A 3Commas bot is useful when you already know the range or the DCA budget and you want 24-hour order placement. It is weak when the edge depends on reading a BOS or a session open in real time. It will not size for news, weekend gaps on some pairs, or a sudden change in exchange maker/taker. If you cannot state the invalidation in one sentence, do not automate it.
Frequently asked questions
Does 3Commas hold my crypto?
No. Funds stay on the exchange you connect. 3Commas sends orders through your API. That is why withdrawal permission on the key is a serious mistake.
How much does a 3Commas trading bot cost?
The platform is typically a monthly or annual subscription, often in a roughly $20 to $80 band plus your exchange trading fees. Check their live pricing; add-ons change the total.
Can I test without risking money?
Paper or demo mode is available on many accounts. Use it until you have seen both a completed cycle and a failed cycle. Paper still ignores some live slippage and queue position.
Is a DCA bot safer than a grid?
Neither is safer by default. DCA can build a large bag in a trend. Grid can sit with inventory after a range break. Safety is the cap you set on total quote spent and the stop you actually honour.
What API permissions should I allow?
Trade only. No withdrawal. Restrict IP if offered. Rotate the key if you suspect a leak. 2FA on both 3Commas and the exchange.
Will a bot guarantee profit?
No. Trading involves risk of loss. Bots execute rules; they do not remove trend risk, fees or operational failure. Treat them as decision-support automation, not a return promise.