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#!/usr/bin/env python3
"""
BSCScan API Client - Binance Smart Chain blockchain explorer
Official API: https://bscscan.com/apis
"""
import httpx
import logging
import os
from typing import Dict, Any, List, Optional
from datetime import datetime
logger = logging.getLogger(__name__)
# BSCScan API Key from .env.example
BSCSCAN_API_KEY = os.getenv("BSCSCAN_KEY", "K62RKHGXTDCG53RU4MCG6XABIMJKTN19IT")
class BSCScanClient:
"""
BSCScan API Client - BNB Smart Chain data
"""
def __init__(self, api_key: str = BSCSCAN_API_KEY):
self.base_url = "https://api.bscscan.com/api"
self.api_key = api_key
self.timeout = 15.0
async def get_bnb_price(self) -> Dict[str, Any]:
"""
Get current BNB price in USD
Returns:
BNB price data
"""
try:
async with httpx.AsyncClient(timeout=self.timeout) as client:
response = await client.get(
self.base_url,
params={
"module": "stats",
"action": "bnbprice",
"apikey": self.api_key
}
)
response.raise_for_status()
data = response.json()
if data.get("status") == "1":
result_data = data.get("result", {})
price_usd = float(result_data.get("ethusd", 0))
result = {
"symbol": "BNB",
"price": price_usd,
"currency": "USD",
"timestamp": result_data.get("ethusd_timestamp", datetime.utcnow().isoformat()),
"source": "BSCScan"
}
logger.info(f"✅ BSCScan: Fetched BNB price: ${price_usd}")
return result
else:
error_msg = data.get('message', 'Unknown error')
# Log as warning if it's just an API key issue, don't crash
# BSCScan API key issues are non-critical - other providers will be used
if "NOTOK" in str(data.get('status', '')) or "Invalid API Key" in error_msg:
logger.info(f"ℹ️ BSCScan API key not configured or rate limited - using alternative providers")
raise Exception(f"BSCScan unavailable")
else:
raise Exception(f"BSCScan API error: {error_msg}")
except httpx.HTTPStatusError as e:
logger.error(f"❌ BSCScan API HTTP error: {e.response.status_code}")
raise
except Exception as e:
logger.error(f"❌ BSCScan API failed: {e}")
raise
async def get_bsc_supply(self) -> Dict[str, Any]:
"""
Get BNB total and circulating supply
Returns:
Supply data
"""
try:
async with httpx.AsyncClient(timeout=self.timeout) as client:
response = await client.get(
self.base_url,
params={
"module": "stats",
"action": "bnbsupply",
"apikey": self.api_key
}
)
response.raise_for_status()
data = response.json()
if data.get("status") == "1":
supply = float(data.get("result", 0))
logger.info(f"✅ BSCScan: Fetched BNB supply: {supply}")
return {
"symbol": "BNB",
"supply": supply,
"source": "BSCScan",
"timestamp": datetime.utcnow().isoformat()
}
else:
raise Exception(f"BSCScan supply error: {data.get('message', 'Unknown error')}")
except httpx.HTTPStatusError as e:
logger.error(f"❌ BSCScan supply HTTP error: {e.response.status_code}")
raise
except Exception as e:
logger.error(f"❌ BSCScan supply failed: {e}")
raise
async def get_gas_oracle(self) -> Dict[str, Any]:
"""
Get BSC gas oracle (gas prices)
Returns:
Gas price data
"""
try:
async with httpx.AsyncClient(timeout=self.timeout) as client:
response = await client.get(
self.base_url,
params={
"module": "gastracker",
"action": "gasoracle",
"apikey": self.api_key
}
)
response.raise_for_status()
data = response.json()
if data.get("status") == "1":
result_data = data.get("result", {})
logger.info(f"✅ BSCScan: Fetched gas oracle data")
return {
"safe_gas_price": result_data.get("SafeGasPrice", "0"),
"propose_gas_price": result_data.get("ProposeGasPrice", "0"),
"fast_gas_price": result_data.get("FastGasPrice", "0"),
"suggested_base_fee": result_data.get("suggestBaseFee", "0"),
"gas_used_ratio": result_data.get("gasUsedRatio", "0"),
"chain": "BSC",
"source": "BSCScan",
"timestamp": datetime.utcnow().isoformat()
}
else:
raise Exception(f"BSCScan gas oracle error: {data.get('message', 'Unknown error')}")
except httpx.HTTPStatusError as e:
logger.error(f"❌ BSCScan gas oracle HTTP error: {e.response.status_code}")
raise
except Exception as e:
logger.error(f"❌ BSCScan gas oracle failed: {e}")
raise
async def get_token_info(self, contract_address: str) -> Dict[str, Any]:
"""
Get BEP-20 token information
Args:
contract_address: Token contract address
Returns:
Token info
"""
try:
async with httpx.AsyncClient(timeout=self.timeout) as client:
response = await client.get(
self.base_url,
params={
"module": "token",
"action": "tokeninfo",
"contractaddress": contract_address,
"apikey": self.api_key
}
)
response.raise_for_status()
data = response.json()
if data.get("status") == "1":
result_data = data.get("result", [{}])[0]
logger.info(f"✅ BSCScan: Fetched token info for {contract_address}")
return {
"contract_address": contract_address,
"token_name": result_data.get("tokenName", ""),
"symbol": result_data.get("symbol", ""),
"decimals": result_data.get("decimals", ""),
"total_supply": result_data.get("totalSupply", ""),
"source": "BSCScan",
"timestamp": datetime.utcnow().isoformat()
}
else:
raise Exception(f"BSCScan token info error: {data.get('message', 'Unknown error')}")
except httpx.HTTPStatusError as e:
logger.error(f"❌ BSCScan token info HTTP error: {e.response.status_code}")
raise
except Exception as e:
logger.error(f"❌ BSCScan token info failed: {e}")
raise
# Global instance
bscscan_client = BSCScanClient()
# Standalone functions
async def fetch_bnb_price() -> float:
"""Get BNB price from BSCScan"""
try:
data = await bscscan_client.get_bnb_price()
return data.get("price", 0)
except:
return 0
async def fetch_bsc_gas_prices() -> Dict[str, Any]:
"""Get BSC gas prices"""
return await bscscan_client.get_gas_oracle()
__all__ = ["BSCScanClient", "bscscan_client", "fetch_bnb_price", "fetch_bsc_gas_prices"]
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