Engineering Assessment

📝 Objective

The goal of this assessment is to evaluate your ability to:

Work with Web3 technologies and integrate blockchain functionality into a decentralized application (dApp).

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📌 Task Instructions

1. Create a New API Endpoint

   • Add a new API endpoint in index.js named:

     [Name]ApiTest
     

2. Smart Contract Interaction

   • Select any pre-deployed or public smart contract (mainnet or testnet).

   • Fetch some data (any useful information such as balance, contract state, or public variables).

   • The logic should fetch data through your new API endpoint.

3. Output

   • The result should be printed to the console.
   • No need for complex UI or data persistence
   • just demonstrate that the data was fetched successfully.

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📤 Submission

Once completed, submit one of the following:

• short video recording your work.
• screenshots showing the API call and console result.
• Github Link where your assessment result were pushed.

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⏰ Time Expectation

• Estimated time to complete: 30–60 minutes.

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⚙️ Notes

You may use any blockchain provider such as:

• ethers.js
• web3.js
• Any public RPC provider (Infura, Alchemy, QuickNode, etc.)

Keep your code clean, simple, and easy to review.

Handle errors gracefully where possible.

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🚀 Quick Start Guide

To run the project locally:

# Clone the repository (if provided)
git clone [repo-url]

# Move into the project directory
cd [project-folder]

# Install dependencies
npm install

# Start the server
npm start

Complete

Api

curl localhost:4015/api/ef

output

{"address":"0xde0B295669a9FD93d5F28D9Ec85E40f4cb697BAe","label":"Ethereum Foundation","balanceWei":"10774450567588229957307","balanceEth":"10774.450568","block":"latest","rpc":"https://eth.llamarpc.com"}

Routes

/ef Fetches the ETH balance of the Ethereum Foundation address via JSON-RPC

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