Babel - Web3 API - IoTeX Developer Documentation

Babel is the IoTeX service that wraps an Ethereum-node JSON-RPC API: you can point your web3 Ethereum libraries and tools to a Babel endpoint, and have them work with the IoTeX blockchain with no changes. 
json-rpc
Ethereum Wiki
Official Ethereum JSON-RPC API Documentation
Access the Babel API
You can deploy your own Babel service available on GitHub, or you can use the publicly accessible endpoints  below:
Mainnet
Parameter
Value
RPC URL
​https://babel-api.mainnet.iotex.io​
Chain ID
4689
Explorer URL
​https://iotexscan.io​
Testnet
Parameter
Value
RPC URL 
​https://babel-api.testnet.iotex.io​
Chain ID
4690
Explorer URL
​https://testnet.iotex.io​
Example
To get the balance of the IoTeX address ukzv5m6xnsg3gzaec3shew8nw03cch2x53d6v6 you first convert it into the ethereum address format using ioctl:
1
$ ioctl account ethaddr io1ukzv5m6xnsg3gzaec3shew8nw03cch2x53d6v6
2
io1ukzv5m6xnsg3gzaec3shew8nw03cch2x53d6v6 - 0xE584ca6F469c11140Bb9c4617Cb8f373E38C5D46
Copied!
which gives you the following Ethereum address:0xE584ca6F469c11140Bb9c4617Cb8f373E38C5D46. 
Then you can query the Babel endpoint according to the Ethereum JSON RPC API: 
1
» curl -X POST -H "Content-Type:application/json" --data '{"id": 1, "jsonrpc": "2.0", "method": "eth_getBalance", "params": ["0xE584ca6F469c11140Bb9c4617Cb8f373E38C5D46", ""]}' http://babel-api.mainnet.iotex.io
2
{
3
  "id": 1,
4
  "jsonrpc": "2.0",
5
  "result": "0x10f0cf064dd59200000"
6
}
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Which returns the balance 0x10f0cf064dd59200000 (hex) for the address, expressed in Rau units (i.e. 5000000000000000000000 Rau, equivalent to 5000 IOTX).
Check out the official Ethereum JSON-RPC API Documentation at:
json-rpc
Ethereum Wiki
Official Ethereum JSON-RPC API Documentation
Supported API
Below is the list of the currently supported APIs:
eth_chainId
eth_blockNumber
eth_getBlockByNumber
eth_getBalance 
eth_gasPrice 
eth_getTransactionCount
eth_sendRawTransaction
eth_call
eth_estimateGas 
eth_getCode 
eth_getTransactionReceipt 
eth_protocolVersion 
eth_syncing 
eth_getBlockTransactionCountByHash 
eth_getBlockTransactionCountByNumber 
eth_getBlockByHash 
eth_getTransactionByHash 
eth_getTransactionByBlockHashAndIndex 
eth_getTransactionByBlockNumberAndIndex 
eth_getLogs
net_version 
net_peerCount 
net_listening 
web3_clientVersion 
getpeers 
eth_coinbase
eth_mining
eth_hashrate
eth_accounts
eth_getStorageAt
eth_getUncleCountByBlockHash
eth_getUncleCountByBlockNumber
eth_sign
eth_signTransaction
eth_sendTransaction
eth_getUncleByBlockHashAndIndex
eth_getUncleByBlockNumberAndIndex
eth_newFilter
eth_newBlockFilter
eth_newPendingTransactionFilter
eth_uninstallFilter
eth_getFilterChanges
eth_getFilterLogs
eth_getWork
eth_submitWork
eth_submitHashrate
eth_pendingTransactions
db_putString
db_getString
db_putHex
db_getHex
shh_post
shh_version
shh_newIdentity 
shh_hasIdentity 
shh_newGroup 
shh_addToGroup 
shh_newFilter 
shh_uninstallFilter 
shh_getFilterChanges 
shh_getMessages

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iotex-core - gRPC API

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Contents

Access the Babel API

Supported API