How to Buy API3
Every exchange we track that lists API3, what the buy costs, and what it costs to take API3 with you afterwards.
29 of the exchanges we track list API3, and 27 of those accept fiat, so you can buy it without holding crypto first. The cheapest place to place the order is Ourbit at $0.00 on a $1,000 market buy. It is also the cheapest once the withdrawal fee is added — $0.07 to buy $1,000 of API3 and move it to your own wallet. API3 moves over 2 networks (Ethereum (ERC20), Cronos) — pick the same one on the exchange withdrawal screen and in your wallet. 1 of them has API3 withdrawals paused right now — you can buy there, but you cannot take the coin with you until it reopens.
Networks API3 runs on
Where to buy API3
All-in cost is the trading fee on a $1,000 market buy plus the cheapest fee that exchange charges to withdraw API3. It is the number the exchange’s own “how to buy” page never shows you, and it reorders the table more often than not. The coins column is how many assets each exchange lists in total, from our own sync — not the figure CoinMarketCap prints.
| Exchange | Buy fee on $1,000 | Move it out | All-in cost | Coins listed | Buy |
|---|---|---|---|---|---|
 OKXReferralPay with Card | $1.000.1% taker | $0.16640.7200 API3 · Ethereum (ERC20) | $1.17 | 411 | Visit ↗ |
 BinanceReferralPay with Card, Bank, Apple/Google Pay | $1.000.1% taker | $0.72803.15 API3 · Ethereum (ERC20) | $1.73 | 866 | Visit ↗ |
 BitgetReferralPay with Card, 3rd-party | $1.000.1% taker | $0.81993.5477 API3 · Ethereum (ERC20) | $1.82 | 2,516 | Visit ↗ |
 GateReferralPay with Card | $1.000.1% taker | $1.024.42 API3 · Ethereum (ERC20) | $2.02 | 2,059 | Visit ↗ |
 MEXCReferralPay with Card | $0.500–0.05% taker | $2.089 API3 · Ethereum (ERC20) | $2.58 | 9,475 | Visit ↗ |
 OurbitPay with Bank | $0.000% taker | $0.069330.3000 API3 · Ethereum (ERC20) | $0.07 | 1,980 | Visit ↗ |
 KCEXPay with Card, 3rd-party | $0.000% taker | $0.87123.77 API3 · Ethereum (ERC20) | $0.87 | 908 | Visit ↗ |
 WhiteBITPay with Card | $1.000.1% taker | $0.013630.05900 API3 · Ethereum (ERC20) | $1.01 | 423 | Visit ↗ |
 KuCoinPay with Card | $1.000.1% taker | $0.57772.5 API3 · Ethereum (ERC20) | $1.58 | 2,147 | Visit ↗ |
 CoinWPay with Card, Apple/Google Pay, 3rd-party | $1.000.1% taker | $0.73153.1654 API3 · Ethereum (ERC20) | $1.73 | 1,218 | Visit ↗ |
 OrangeXPay with Card, Bank, Apple/Google Pay | $1.000.1% taker | $0.81333.5193 API3 · Ethereum (ERC20) | $1.81 | 599 | Visit ↗ |
 DigiFinexPay with Card, P2P | $2.000.2% taker | $0.00013870.0006000 API3 · Ethereum (ERC20) | $2.00 | 1,009 | Visit ↗ |
 CoinExPay with P2P, 3rd-party | $2.000.2% taker | $0.062400.2700 API3 · Ethereum (ERC20) | $2.06 | 1,018 | Visit ↗ |
 BitunixPay with P2P | $1.000.1% taker | $1.094.7 API3 · Ethereum (ERC20) | $2.09 | 993 | Visit ↗ |
 PionexPay with Card, P2P | $1.000.05–0.1% taker | $1.396.0152 API3 · Ethereum (ERC20) | $2.39 | 206 | Visit ↗ |
 Biconomy.comPay with Card, P2P, 3rd-party | $1.000.1% taker | $1.858 API3 · Ethereum (ERC20) | $2.85 | 990 | Visit ↗ |
 BitradeXPay with 3rd-party | $2.000.2% taker | $1.165 API3 · Ethereum (ERC20) | $3.16 | 178 | Visit ↗ |
 BitruePay with Card | $2.800.098–0.28% taker | $0.78573.4 API3 · Ethereum (ERC20) | $3.59 | 1,784 | Visit ↗ |
 HTXPay with Bank, P2P | $2.000.2% taker | $1.837.9226 API3 · Ethereum (ERC20) | $3.83 | 1,159 | Visit ↗ |
 BTCCPay with Card, Bank, P2P | $3.000.3% taker | $1.396 API3 · Ethereum (ERC20) | $4.39 | 250 | Visit ↗ |
 Crypto.com ExchangePay with Bank | $5.000.5% taker | $0.024390.1056 API3 · Cronos | $5.02 | 462 | Visit ↗ |
 BitMartPay with Card, P2P, 3rd-party | $1.000.1% taker | $5.0822 API3 · Ethereum (ERC20) | $6.08 | 3,695 | Visit ↗ |
 KrakenPay with Card, Bank, Apple/Google Pay | $8.000.01–0.8% taker | $0.58932.5499 API3 · Ethereum (ERC20) | $8.59 | 697 | Visit ↗ |
 XT.COMPay with Card, Bank, P2P | $2.000.2% taker | $7.1631 API3 · Ethereum (ERC20) | $9.16 | 1,110 | Visit ↗ |
 ToobitPay with Card, Apple/Google Pay, 3rd-party | $1.000.1% taker | $9.9443.0165 API3 · Ethereum (ERC20) | $10.94 | 581 | Visit ↗ |
 HitBTCCrypto deposit only | $2.500.1875–0.25% taker | $24.89107.7 API3 · Ethereum (ERC20) | $27.39 | 1,786 | Visit ↗ |
 4ECrypto deposit only | — | $0.92444 API3 · Ethereum (ERC20) | — | 217 | Visit ↗ |
 Mandala ExchangeCrypto deposit only | — | $14.4862.652 API3 · Ethereum (ERC20) | — | 319 | Visit ↗ |
 HibtPay with P2P | $2.000.2% taker | withdrawals paused | — | 1,721 | Visit ↗ |
Showing 1–29 of 29 exchanges listing API3
Buying API3 step by step
- Pick a venue from the table. For a coin this size the choice is usually short — 29 exchanges list API3 at all, and the table already shows what you will pay to leave as well as to buy.
- Fund the account. 27 of those exchanges take fiat, 19 of them by card. Card is fastest and dearest; a bank transfer costs a fraction of it. Depositing a stablecoin you already hold is free on almost every exchange here.
- Place the order. A market order pays the taker fee in the table; a limit order that rests on the book pays the lower maker fee. On a thinly traded coin the spread costs more than either, so a limit order is worth the wait.
- Decide whether to move it. Leaving API3 on the exchange is free but custodial. Moving it to a wallet that supports it costs one withdrawal fee, from $0.06933 — send a small test amount first, and match the network on both sides.
How to buy API3 — FAQ
Where can I buy API3?
On 29 exchanges we track: OKX, Binance, Bitget, Gate, MEXC and 24 more. The table above has each one with its trading fee, the payment methods it takes and what it charges to withdraw API3.
What is the cheapest way to buy API3?
Ourbit, at $0.07 to buy $1,000 of API3 and withdraw it — $0.00 in trading fee plus $0.06933 to move it out over Ethereum (ERC20). If you are leaving the coin on the exchange, only the first half applies and a different venue may win. Paying by card adds the card processor's charge on top of both, typically 1.8–4%.
Can I buy API3 with a credit card?
Indirectly, yes. 19 of the exchanges listing API3 accept a card, but the card almost always buys a major asset — USDT, USDC, BTC — which you then swap for API3 on the same exchange. That means two fees: the card charge, then the trading fee in the table.
Do I have to pay a fee to withdraw API3?
Yes, and it is worth checking before you choose where to buy. It is a flat amount of API3, set by each exchange per network, so it does not scale with the size of your purchase — the cheapest in the table is $0.06933 on Ourbit. Our full API3 withdrawal fee table compares every exchange and every network.
Is it safe to leave API3 on the exchange?
It is a custody choice, not a safety switch. While the coin sits there the exchange holds the keys: convenient, recoverable if you lose your password, and dependent on the exchange staying solvent and keeping withdrawals open. Moving it to a wallet you control removes that dependency and costs one withdrawal fee — from $0.06933 for API3. For a trading balance, staying put is reasonable; for a long hold, most people move.
Which network should I use for API3?
API3 is issued on 2 networks and they are not interchangeable — API3 sent over Ethereum (ERC20) will not arrive at an address on Cronos. Ethereum (ERC20) is the one most exchanges use (28 of them). Withdrawal fees differ per network too, sometimes by an order of magnitude, so the cheapest network is worth checking as well as the cheapest exchange.
Exchange coverage for API3 comes from each exchange’s own deposit and withdrawal endpoints (last sync 2026-08-29 00:53 UTC); trading fees are the published base tier, no volume discount applied (verified 2026-08-28). Exchanges we have a referral arrangement with appear first and are tagged as such — it changes no number in any row. Nothing here is investment advice; see our methodology.