Blockchain Integration

Axol API provides unified access to 17 blockchains through a single interface.

Supported Chains

Production Ready (12 chains)

• Ethereum (EVM)
• Arbitrum (EVM)
• Optimism (EVM)
• Base (EVM)
• Polygon (EVM)
• Gnosis (EVM)
• Bitcoin (UTXO)
• Solana (Solana)
• Starknet (Cairo)
• Tron (TVM)
• Polkadot (Substrate)
• Celestia (Cosmos)

Beta Support (5 chains)

• Sei (Cosmos) Beta
• Sui (Move) Beta
• dYdX (Cosmos) Beta
• Babylon (Cosmos) Beta
• Osmosis (Cosmos) Beta

All chains include: Mainnet, Archive data, WebSocket, and RPC access

Chain Identifiers

Category	Chain	API ID	Chain ID	Native Token	Status
EVM	Ethereum	ethereum	1	ETH	Production
	Arbitrum	arbitrum	42161	ETH	Production
	Optimism	optimism	10	ETH	Production
	Base	base	8453	ETH	Production
	Polygon	polygon	137	MATIC	Production
	Gnosis	gnosis	100	xDAI	Production
Non-EVM	Bitcoin	bitcoin	-	BTC	Production
	Solana	solana	-	SOL	Production
	Starknet	starknet	-	ETH	Production
	Tron	tron	-	TRX	Production
	Polkadot	polkadot	-	DOT	Production
	Celestia	celestia	-	TIA	Production
Beta	Sei	sei	-	SEI	Beta
	Sui	sui	-	SUI	Beta
	dYdX	dydx	-	DYDX	Beta
	Babylon	babylon	-	BBN	Beta
	Osmosis	osmosis	-	OSMO	Beta

API Usage

# Get data for specific chain
client.get_block("ethereum", "latest")
client.get_block("solana", "latest")
client.get_block("bitcoin", "latest")

Common Operations

Get Chain Info

# Get chain metadata
info = client.get_chain_info("ethereum")
print(info)
# {
#   "name": "Ethereum",
#   "chain_id": 1,
#   "native_token": "ETH",
#   "block_time": 12,
#   "rpc_url": "https://rpc.axol.io/eth"
# }

Cross-Chain Queries

# Get balances across multiple chains
address = "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb5"
chains = ["ethereum", "polygon", "arbitrum"]

balances = client.get_multi_chain_balances(address, chains)

Gas Prices

# Get gas prices for all supported EVM chains
gas_prices = client.get_gas_prices([
    "ethereum", "polygon", "arbitrum", "optimism"
])

for chain, prices in gas_prices.items():
    print(f"{chain}: {prices['fast']} gwei")

Chain-Specific Features

Ethereum & EVM

# ENS resolution
address = client.resolve_ens("vitalik.eth")

# Token balances
tokens = client.get_token_balances(
    address="0x...",
    chain="ethereum"
)

# Smart contract calls
result = client.call_contract(
    chain="ethereum",
    contract="0x...",
    method="balanceOf",
    params=[address]
)

Bitcoin

# UTXO queries
utxos = client.get_utxos("bc1q...")

# Transaction details
tx = client.get_transaction("bitcoin", "tx_hash")

# Address balance
balance = client.get_balance("bitcoin", "bc1q...")

Solana

# SPL token balances
tokens = client.get_spl_tokens("pubkey...")

# Program accounts
accounts = client.get_program_accounts(
    chain="solana",
    program_id="TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA"
)

# Transaction history
txs = client.get_signatures("pubkey...")

RPC Endpoints

Direct RPC access for each chain:

https://rpc.axol.io/{chain}

Example:

curl -X POST https://rpc.axol.io/ethereum \
  -H "X-API-Key: your_key" \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'

WebSocket Connections

Real-time updates for each chain:

# Subscribe to new blocks
await client.ws.subscribe("blocks:ethereum", on_block)
await client.ws.subscribe("blocks:solana", on_block)

# Subscribe to pending transactions
await client.ws.subscribe("pending:ethereum", on_pending)

Pricing & Resources

All chains consume the same CU cost per method type. There's no premium pricing for specific chains.

See also:

• Pricing & CU Costs - Compute unit pricing details
• Chain Coverage Comparison - Axol vs competitors
• WebSockets - Real-time data streaming
• API Reference - Complete API documentation