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schwwaaa/viewfinder

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A single API for most EVM blockchains

What?

Viewfinder is a single API for most EVM blockchains. The project extends sebs-etherscan API to more EVM blockchains. New methods are added by scanning each blockchain for their available methods. Each blockchain requires an API key that can be found for free (with restrictions) on Etherscan and Etherscan-clones (ex. Snowtrace, BSCscan, etc.). API keys are loaded using an .env file, more information below.

Requirements

  • Node.js
  • API key for supported blockchains

Installation

npm i -g viewfinder

Docs

Request

curl --location --request GET 'http://localhost:3000/util/txbyhash?blockchain=ethereum&contract=0xe6236684face5ca33c531a011071236d24460fb8&hash=0x6e471b46c6ddfc5164beb5f5ff2581acac826462b33e98471cbafc94f391765e&key=YOUR_API_KEY'

Usage

function testTxByHash(obj){
var api = require("@vondas/viewfinder").init(obj.blockchain, obj.key);
var output = new Promise(async(resolve, reject) => {
try {
response = api.proxy.eth_getTransactionByHash(obj.hash);
} catch (ex) {
response = null;
reject(ex);
}
if (response) {
response.then(function(txs) {
var exportOBJ = {
blockchain: obj.blockchain,
contract: obj.contract,
hash: obj.hash,
tx: txs.result
}
resolve(exportOBJ);
})
}
});
return output;
}

Response

{
"blockchain": "ethereum",
"contract": "0xe6236684face5ca33c531a011071236d24460fb8",
"hash": "0x6e471b46c6ddfc5164beb5f5ff2581acac826462b33e98471cbafc94f391765e",
"tx": {
"blockHash": "0x3c0fbfbfeb94ae16a513abbc1a668e1d1baefcbab7e53808949ddb68887f3304",
"blockNumber": "0xd79449",
"from": "0x3fe8c83615f7f32d11c65eb8a0a04675d8c4402b",
"gas": "0x8774",
"gasPrice": "0x2e5b48e700",
"hash": "0x6e471b46c6ddfc5164beb5f5ff2581acac826462b33e98471cbafc94f391765e",
"input": "0x095ea7b300000000000000000000000068b3465833fb72a70ecdf485e0e4c7bd8665fc45ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
"nonce": "0x24",
"to": "0xe6236684face5ca33c531a011071236d24460fb8",
"transactionIndex": "0x6d",
"value": "0x0",
"type": "0x0",
"chainId": "0x1",
"v": "0x25",
"r": "0xb45ff9d9f38c028cd27b71e3ad5bc0466268bbdaf8565e7f448ec01cec7b2a73",
"s": "0x24487a69f87408d11a80fd6da708e08241819695f5748f37d28a15527412648b"
}
}

Supported Blockchains

Testnet

Testnet Blockchain Endpoint
Ropsten Ethereum https://api-ropsten.etherscan.io
Kovan Ethereum https://api-kovan.etherscan.io
Rinkeby Ethereum https://api-rinkeby.etherscan.io

Mainnet

Mainnet Endpoint Docs
Ethereum https://api.etherscan.io https://docs.etherscan.io/
Avalanche https://api.snowtrace.io https://snowtrace.io/apis
Binance https://api.bscscan.com https://docs.bscscan.com/
Heco https://api.hecoinfo.com https://hecoinfo.com/apis
Cronos https://api.cronoscan.com https://cronoscan.com/apis
Moonriver https://api-moonriver.moonscan.io https://moonriver.moonscan.io/apis
Moonbeam https://blockscout.moonbeam.network https://blockscout.moonbeam.network/api-docs
Arbitrum https://api.arbiscan.io https://arbiscan.io/apis
Fantom https://api.ftmscan.com https://ftmscan.com/apis
Hooscan https://api.hooscan.com https://hooscan.com/apis
Optimism https://api-optimistic.etherscan.io https://optimistic.etherscan.io/apis

Methods & Functions by Blockchain

Type Method URL Ethereum Polygon Avalanche BSC Heco Cronos Moonriver Moonbeam Arbitrum Fantom Hooscan
Logs getLogs api?module=logs&action=getLogs x x x x x x x x x - -
Proxy eth_blockNumber api?module=proxy&action=eth_blockNumber x x x x x x x x - - -
Proxy eth_getBlockByNumber api?module=proxy&action=eth_getBlockByNumber x x x x x x x x - - -
Proxy eth_getBlockTransactionCountByNumber api?module=proxy&action=eth_getBlockTransactionCountByNumber x x x x x x x x - - -
Proxy eth_getTransactionByHash api?module=proxy&action=eth_getTransactionByHash x x x x x x x x - - -
Proxy eth_getTransactionByBlockNumberAndIndex api?module=proxy&action=eth_getTransactionByBlockNumberAndIndex x x x x x x x x - - -
Proxy eth_getTransactionCount api?module=proxy&action=eth_getTransactionCount x x x x x x x x - - -
Proxy eth_sendRawTransaction api?module=proxy&action=eth_sendRawTransaction x x x x x x x x - - -
Proxy eth_getTransactionReceipt api?module=proxy&action=eth_getTransactionReceipt x x x x x x x x - - -
Proxy eth_call api?module=proxy&action=eth_call x x x x x x x x - - -
Proxy eth_getCode api?module=proxy&action=eth_getCode x x x x x x x x - - -
Proxy eth_getStorageAt api?module=proxy&action=eth_getStorageAt x x x x x x x x - - -
Proxy eth_gasPrice api?module=proxy&action=eth_gasPrice x x x x x x x x - - -
Proxy eth_estimateGas api?module=proxy&action=eth_estimateGas x x x x x x x x - - -
Stats tokensupply api?module=stats&action=tokensupply x x x x x x x x - x x
Stats ethsupply api?module=stats&action=ethsupply x x x x x x x x - x x
Stats ethprice api?module=stats&action=ethprice x x x x x x x x - x x
Block block api?module=block&action=gtblockreward x x x x x x x x x - -
Transaction getstatus api?module=transaction&action=gettxreceiptstatus x x x x x x x x x - -
Contract getabi api?module=contract&action=getabi x x x x x x x x x x x
Contract getsourcecode api?module=contract&action=getsourcecode x x x x x x x x x x x
Account tokenbalance api?module=account&action=tokenbalance x x x x x x x x x x x
Account balance api?module=account&action=balance x x x x x x x x x x x
Account txlistinternal api?module=account&action=txlistinternal x x x x x x x x x x x
Account txlist api?module=account&action=txlist x x x x x x x x x x x
Account getminedblocks api?module=account&action=getminedblocks x x x x x x x x x x x
Account tokentx api?module=account&action=tokentx x x x x x x x x x x x
Token tokensupply api?module=tokens&action=tokensupply - x - - - - - - - - -
Token tokenbalance api?module=tokens&action=tokenbalance - x - - - - - - - - -

*subject to change

About

One API for most EVM blockchain explorers & their clones

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Readme

License

MIT license

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