Alchemy RPC Setup

Connect to Injective EVM mainnet and testnet via Alchemy JSON-RPC endpoints.

Alchemy provides reliable JSON-RPC endpoints for the Injective EVM. Use this guide to create an Alchemy app and start making requests.

Injective + Alchemy quick start (1 min) - YouTube

Prerequisites

• An Alchemy account (sign up free)
• Basic familiarity with EVM RPC endpoints

Steps

1. Create an app

   From the Alchemy dashboard, create a new app and select Injective as the chain. Choose the network:

   • Injective EVM Mainnet: Chain ID 1776
   • Injective EVM Testnet: Chain ID 1439
2. Copy your RPC endpoints

   Open your app and copy the HTTPS and WebSocket endpoints:

   Mainnet

   https://inj-mainnet.g.alchemy.com/v2/<YOUR_API_KEY>
   wss://inj-mainnet.g.alchemy.com/v2/<YOUR_API_KEY>
   

   https://inj-testnet.g.alchemy.com/v2/<YOUR_API_KEY>
   wss://inj-testnet.g.alchemy.com/v2/<YOUR_API_KEY>
   

   Keep your API key private, treat it like a password.

3. Start building

   Use the endpoint with your preferred library:

   ethers.js (v6)

   import { JsonRpcProvider } from "ethers";
   
   const provider = new JsonRpcProvider(
     "https://inj-mainnet.g.alchemy.com/v2/<YOUR_API_KEY>"
   );
   
   const blockNumber = await provider.getBlockNumber();
   console.log("Latest block:", blockNumber);
   

   import { createPublicClient, http } from "viem";
   import { defineChain } from "viem";
   
   const injectiveEVM = defineChain({
     id: 1776,
     name: "Injective EVM",
     nativeCurrency: { name: "Injective", symbol: "INJ", decimals: 18 },
     rpcUrls: {
       default: { http: ["https://inj-mainnet.g.alchemy.com/v2/<YOUR_API_KEY>"] },
     },
   });
   
   const client = createPublicClient({
     chain: injectiveEVM,
     transport: http(),
   });
   
   const blockNumber = await client.getBlockNumber();
   console.log("Latest block:", blockNumber);
   

   curl https://inj-mainnet.g.alchemy.com/v2/<YOUR_API_KEY> \
     -X POST \
     -H "Content-Type: application/json" \
     -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'
   

Next steps

• EVM network information - chain IDs, explorers, and public RPC endpoints
• Deploy your first EVM smart contract
• Connect your dApp to Injective