Billcheap Agent

Problem Statement

Billcheap is a decentralized bill payment system focused on simplifying bill payment and financial transactions across 150+ countries, through interactive AI Agent. Billcheap Agent is built on base blockchain technology, it offers decentralized, transparent, tamper-proof transactions and interactivity by interfacing with Telegram Bots.Core Services:Mobile Top-ups: Airtime topup for 150+ countries, 750+ operatorsData Bundles: International mobile data packagesUtility Bills: Electricity bills and meter tokensEntertainment: Cable TV subscriptionsAgents CapabilitiesBillcheap is equipped with the capability of processing and paying for a utility bill just with a prompt given to it.Billcheap AI agent can help users manage their wallet and carry out transactions such as making transfer, withdrawal and making payment for a billIt is equipped with the capacity of atomically determining a phone numbers operator and this is important when you want to gift an international phone numbers airtime and you do not know their service provider.

Solution

Billcheap seamlessly integrates Telegram and Coinbase AgentKit to provide a unique experience to its users. Under the hood a wallet is created using a uniquely generated encrypted salt with Ethers for each user at first interaction via Telegram and this salt and every private user info is automatically stored in Nillion Secret Vault for maximum protection. The salt is retrieved from Nilion SecretVault and wallet is generated whenever the AgentKit performs a transaction.While integrating Nillion Secret Vault SDK I ran into an issue, because nestjs was esm module compatibles, I switched to the API integration and found a way around. Using Nillion is a relief from having to store users encrypted salt on our database due to security treat.Our smart contract is developed using solidity and is deploy to base-sepolia network. Billcheap's Action Providers are the intermediaries between Coinbase AgentKit and Billcheap smart contract.