Trading API

Supported Chains

The Binance Web3 Trading API supports quote and swap building on the following 18 chains.

Supported Chains

#	Chain	Short Name	Chain ID	Router Contract
1	BNB Smart Chain	BSC	56	`0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5`
2	Ethereum	ETH	1	`0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5`
3	Arbitrum One	ARB	42161	`0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5`
4	Base	BASE	8453	`0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5`
5	Polygon	POL	137	`0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5`
6	Optimism	OP	10	`0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5`
7	Linea	ETH	59144	`0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5`
8	Avalanche C-Chain	AVAX	43114	`0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5`
9	Scroll	ETH	534352	`0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5`
10	Mode	ETH	34443	`0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5`
11	Metis Andromeda	METIS	1088	`0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5`
12	Sonic	S	146	`0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5`
13	Katana	ETH	747474	`0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5`
14	Plasma	ETH	9745	`0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5`
15	Monad	MON	143	`0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5`
16	Solana	SOL	CT_501	`BinAnceLh73MadMEF4zdi47Q3FN2kfMuQHG3fzuhhbs5`
17	Tron	TRX	CT_195	`THWkPgWSFVNoWtKQzBvv7bg7xkSEYVmCBw`
18	Robinhood	Robinhood	4663	`0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5`

Endpoint	Purpose
`GET /api/v1/dex/aggregator/supported/chain`	Aggregator (quote / swap build) supported chains

Sample Call (Python)


Code
import hmac, hashlib, base64, urllib.request
from datetime import datetime, timezone

API_KEY = "your-api-key"
SECRET  = "your-secret-key"
BASE    = "https://web3.binance.com/build"

now  = datetime.now(timezone.utc)
ts   = now.strftime("%Y-%m-%dT%H:%M:%S.") + f"{now.microsecond // 1000:03d}Z"
path = "/api/v1/dex/aggregator/supported/chain"
prehash = ts + "GET" + "/build" + path
sig = base64.b64encode(hmac.new(SECRET.encode(), prehash.encode(), hashlib.sha256).digest()).decode()

req = urllib.request.Request(BASE + path)
req.add_header("X-OC-APIKEY", API_KEY)
req.add_header("X-OC-TIMESTAMP", ts)
req.add_header("X-OC-SIGN", sig)
print(urllib.request.urlopen(req).read().decode())

Last modified on August 4, 2026

Introduction Fee & Revenue Sharing

Supported Chains

Chain

Short Name

Chain ID

Router Contract

BNB Smart Chain

BSC

0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5

Ethereum

ETH

0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5

Arbitrum One

ARB

42161

0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5

Base

BASE

8453

0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5

Polygon

POL

137

0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5

Optimism

0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5

Linea

ETH

59144

0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5

Avalanche C-Chain

AVAX

43114

0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5

Scroll

ETH

534352

0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5

Mode

ETH

34443

0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5

Metis Andromeda

METIS

1088

0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5

Sonic

146

0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5

Katana

ETH

747474

0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5

Plasma

ETH

9745

0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5

Monad

MON

143

0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5

Solana

SOL

CT_501

BinAnceLh73MadMEF4zdi47Q3FN2kfMuQHG3fzuhhbs5

Tron

TRX

CT_195

THWkPgWSFVNoWtKQzBvv7bg7xkSEYVmCBw

Robinhood

4663

0xB44446b0c8E56988c34f7Ff73Ae904982b5FdDA5

Endpoint

Purpose

GET /api/v1/dex/aggregator/supported/chain

Aggregator (quote / swap build) supported chains

Sample Call (Python)

Code

import hmac, hashlib, base64, urllib.request
from datetime import datetime, timezone

API_KEY = "your-api-key"
SECRET  = "your-secret-key"
BASE    = "https://web3.binance.com/build"

now  = datetime.now(timezone.utc)
ts   = now.strftime("%Y-%m-%dT%H:%M:%S.") + f"{now.microsecond // 1000:03d}Z"
path = "/api/v1/dex/aggregator/supported/chain"
prehash = ts + "GET" + "/build" + path
sig = base64.b64encode(hmac.new(SECRET.encode(), prehash.encode(), hashlib.sha256).digest()).decode()

req = urllib.request.Request(BASE + path)
req.add_header("X-OC-APIKEY", API_KEY)
req.add_header("X-OC-TIMESTAMP", ts)
req.add_header("X-OC-SIGN", sig)
print(urllib.request.urlopen(req).read().decode())

Last modified on August 4, 2026