Blockchain API

Specialized API for blockchain interactions, smart contract deployments, and on-chain data queries.

The Blockchain API provides direct access to blockchain functionality including smart contract deployment, transaction broadcasting, and gas estimation across all supported EVM chains.

Interactive API Reference

Overview

The Blockchain API provides direct access to blockchain functionality including:

Smart Contract Deployment - Deploy contracts across multiple chains
Transaction Broadcasting - Submit signed transactions to the network
Event Monitoring - Real-time blockchain event subscription
Gas Estimation - Calculate gas costs before submitting transactions

Use Cases

💡

Deploy smart contracts to any supported EVM chain with a single API call.

const response = await fetch('https://api.integra.dev/v1/blockchain/deploy', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    chain_id: 137, // Polygon
    bytecode: '0x608060405234801561001057600080fd5b50...',
    abi: [{
      "inputs": [],
      "stateMutability": "nonpayable",
      "type": "constructor"
    }],
    constructor_args: []
  })
});
 
const result = await response.json();
console.log('Contract deployed at:', result.contract_address);

Returns the deployed contract address and transaction hash.

💡

Broadcast pre-signed transactions to the network with automatic retry and gas management.

const response = await fetch('https://api.integra.dev/v1/blockchain/broadcast', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    chain_id: 137,
    signed_transaction: '0xf86c808504a817c800825208...'
  })
});
 
const result = await response.json();
console.log('Transaction hash:', result.tx_hash);

⚠️

Ensure transactions are properly signed before broadcasting. The API cannot sign transactions on your behalf.

💡

Get accurate gas estimates before submitting transactions to avoid failures.

const response = await fetch('https://api.integra.dev/v1/blockchain/estimate-gas', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    chain_id: 137,
    from: '0x742d35Cc6634C0532925a3b844Bc9e7595f5dE21',
    to: '0xContractAddress',
    data: '0xa9059cbb...' // encoded function call
  })
});
 
const result = await response.json();
console.log('Estimated gas:', result.gas_estimate);
console.log('Gas price:', result.gas_price);

Includes current gas prices and total estimated cost in native currency.

Supported Chains

All EVM-compatible chains are supported. See the Universal API for the complete list of supported chains including:

Polygon (137)
Ethereum (1)
Arbitrum (42161)
Optimism (10)
And 50+ more chains

Universal API RPC API