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This guide walks you through deploying a simple smart contract to Eclipse Testnet.


You'll have to do a few things before you can deploy your smart contract to Eclipse Testnet.

Install Dependencies

Install Rust, and its package manager Cargo.

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

You can check if the installation was successful by running the following commands:

rustc --version
cargo --version

ii. We'll also have to install Node.js and npm using, which will be used later in this guide.

Visit the official Node.js download page and download the installation binary for your system. Versions recommended are 14.0 and above. If you have trouble with this, you might consider using Homebrew or some other package manager.

Note that npm is bundled with the Node.js installation, so you don't have to install it separately.

iii. Now let's install the Solana CLI. This allows you to interact with Solana clusters (Eclipse Testnet in this case).

sh -c "$(curl -sSfL https://release.solana.com/stable/install)"

iv. Instead of setting your Solana CLI to a local cluster, set it to Eclipse Testnet with the following command:

solana config set --url https://testnet.dev2.eclipsenetwork.xyz

v. If this is your first time using the Solana CLI, you will need to generate a new keypair:

solana-keygen new

This will generate a new key pair and save it to your local machine. You will need this key pair to sign transactions to deploy your smart contract to Eclipse Testnet.

Getting Sepolia ETH Tokens

You will need an Ethereum wallet such as Metamask to claim and bridge Sepolia ETH. As a user, you can use Sepolia ETH to explore the Eclipse testnet and dApps deployed on the network. Sepolia ETH is not meant to be traded, and is only used to test applications. Sepolia ETH can be claimed from a number of faucets: Alchemy, QuickNode, and Infura.

Here are instructions on how to claim Sepolia ETH on Alchemy Sepolia ETH Faucet.

  1. Create an Alchemy account to request Sepolia ETH.

  2. Visit the Alchemy Sepolia faucet and log in with your Alchemy account.

  3. Enter your wallet in the provided box, complete the CAPTCHA verification, and click "Send Me ETH".

Deposit Sepolia ETH to Eclipse Testnet

Once you've acquired Sepolia ETH, this script allows you to deposit Sepolia ETH to the Eclipse test network.

Wallet Setup

Getting Your Ethereum Private Key

Once you have Sepolia ETH, copy your Ethereum wallet address and your private private key for later use by navigating to "Account details" and clicking "Show private key".

Getting Your Eclipse Public Address

Copy the previously generated "Solana" address using the Solana CLI: solana-keygen new --no-outfile or solana-keygen new --outfile my-wallet.json.

The public key in the output should resemble something like this following: 6g8wB6cJbodeYaEb5aD9QYqhdxiS8igfcHpz36oHY7p8

Create a Deposit

Obtain and set up the deposit.js script: https://github.com/Eclipse-Laboratories-Inc/testnet-deposit

You'll need to install the dependencies with yarn.

Finally, execute the script:

node deposit.js [YOUR_SOLANA_ADDRESS] 0x7C9e161ebe55000a3220F972058Fb83273653a6e [AMOUNT_IN_GWEI] [FEE_IN_GWEI] [ETHEREUM_PRIVATE_KEY] https://rpc.sepolia.org
  • [AMOUNT_IN_GWEI] is the desired deposit amount, with a minimum of 1500000 gwei (0.0015 ETH)

  • [FEE_IN_GWEI] is the transaction processing fee, which is currently ignored but can set to 100 gwei

A successful command example:

node deposit.js yyiecymjvwYE6Wxg4ZSt4ibdfFRo3JUNhQ99AKnaRqu 0x7C9e161ebe55000a3220F972058Fb83273653a6e 1500000 100 3e1bf180e4778c7944f509b422711101186d26ac15337934f12088623755c0b7 https://rpc.sepolia.org/
Transaction successful: 0xb05a37f4e4b420f651fdffb0b169ba96cb8c8e201b32f3d8d0c94705d7dc6d5f

You can check the transaction hash on Sepolia testnet.

You can verify your testnet account balance using the Eclipse Explorer.

Deploying the Smart Contract​

Now that we've set up our environment, we can deploy our smart contract to Eclipse Testnet. Let's make sure that everything is installed properly by running a local Solana cluster.


In case the validator fails to start, restart your computer and run the following command:

sudo $(command -v solana-sys-tuner) --user $(whoami) > sys-tuner.log 2>&1 &

We don't need that local Solana cluster but we're using it to check that everything is installed properly. Next, we'll clone the Solana Hello World repository and install the dependencies.

git clone https://github.com/solana-labs/example-helloworld
cd example-helloworld
npm install

We build the smart contract:

npm run build:program-rust

Finally, we can deploy the smart contract to Eclipse Testnet:

solana program deploy dist/program/helloworld.so

We can run the JavaScript client and confirm whether the smart contract was deployed successfully:

npm run start

The output should be something like this:

Let's say hello to a Solana account...
Connection to cluster established: { 'feature-set': 2045430982, 'solana-core': '1.7.8' }
Using account AiT1QgeYaK86Lf9kudqKthQPCWwpG8vFA1bAAioBoF4X containing 0.00141872 SOL to pay for fees
Using program Dro9uk45fxMcKWGb1eWALujbTssh6DW8mb4x8x3Eq5h6
Creating account 8MBmHtJvxpKdYhdw6yPpedp6X6y2U9dCpdYaZJdmwV3A to say hello to
Saying hello to 8MBmHtJvxpKdYhdw6yPpedp6X6y2U9dCpdYaZJdmwV3A
8MBmHtJvxpKdYhdw6yPpedp6X6y2U9dCpdYaZJdmwV3A has been greeted 1 times

Not seeing the expected output?

  • Make sure you've run all the commands in the previous steps.

  • Inspect the program logs by running solana logs to see why the program failed.

An example of what you might find is given below.

Signature: 4pya5iyvNfAZj9sVWHzByrxdKB84uA5sCxLceBwr9UyuETX2QwnKg56MgBKWSM4breVRzHmpb1EZQXFPPmJnEtsJ
Status: Error processing Instruction 0: Program failed to complete
Log Messages:
  Program G5bbS1ipWzqQhekkiCLn6u7Y1jJdnGK85ceSYLx2kKbA invoke [1]
  Program log: Hello World Rust program entrypoint
  Program G5bbS1ipWzqQhekkiCLn6u7Y1jJdnGK85ceSYLx2kKbA consumed 200000 of 200000 compute units
  Program failed to complete: exceeded maximum number of instructions allowed (200000) at instruction #334
  Program G5bbS1ipWzqQhekkiCLn6u7Y1jJdnGK85ceSYLx2kKbA failed: Program failed to complete

Integration Assistance

Do you need additional assistance integrating something special like a wallet, bridge, or something else? Feel free to reach out via Discord.

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