How to integrate Paymaster on Abstract Chain with a simple API call?

Zyfi
12 Aug 202404:22

Summary

TLDRThis demo showcases integrating Sci-fi's API with a Dapp, highlighting its native account abstraction for gas usage. The focus is on enabling transactions paid in any token, exemplified by a mock ERC20 token on a testnet. The process includes connecting a wallet, using the API to execute transactions like token transfers without gas fees, and signing payloads with a wallet. The integration is simplified with tools like Rainbow Kit and Wagi, demonstrating a seamless user experience with Etherscan verification.

Takeaways

  • 🚀 The video is a demo on integrating Sci-Fi's API with a Dapp for gas abstraction.
  • 💳 Sci-Fi is a pay-as-a-service product that abstracts gas usage in blockchain interactions.
  • 💡 Gas sponsoring is a popular use case, allowing users to perform operations like submitting NFDs or executing swaps without gas fees.
  • 🔄 The demo focuses on enabling users to pay for transactions using any token, exemplified with a mock ERC20 token on a testnet.
  • 🎨 The presenter showcases a web design with a connected wallet balance for the mock token.
  • 🛰️ Interaction with the smart contract is done indirectly by sending a request to Sci-Fi's API, specifying the function, parameters, and payment token.
  • 🔑 The API responds with a payload that the user signs with their wallet, executing the transaction without token approvals.
  • 🔍 The demo includes transferring tokens between wallets, demonstrating the process on Etherscan and showing a small amount of tokens used to pay for the transaction.
  • 🛠️ Integration of Sci-Fi's API into code is shown using Rainbow Kit and Wagi for blockchain interaction on the custom Abstract testnet.
  • 📝 The script outlines steps for encoding functional data, preparing API requests, fetching responses, and creating a wallet client for transaction preparation.
  • 🔗 The final step is sending a transaction with the wallet client's signature and waiting for the receipt, completing the integration process.

Q & A

  • What is the main purpose of the demo presented in the script?

    -The main purpose of the demo is to show how to integrate sci-fi's API with a database to abstract gas usage when interacting with the blockchain, focusing on enabling users to pay for transactions using any token.

  • What is sci-fi's API and how does it relate to Master as a Service (DBaaS)?

    -Sci-fi's API is a service that allows for abstracting gas usage when interacting with the blockchain. It is related to DBaaS in the context of the demo as it provides a way to handle gas costs and token transactions without direct interaction with smart contracts.

  • What are the two popular use cases of sci-fi's API mentioned in the script?

    -The two popular use cases mentioned are gas sponsoring, which allows a DB to cover its user's gas cost, and enabling users to pay for transactions using any token.

  • Why is gas sponsoring a useful feature for users?

    -Gas sponsoring is useful because it allows users to perform operations such as submitting NFTs or executing swaps on a DEX without having to pay for the gas costs themselves.

  • What is the role of the mock ERC20 token in the demo?

    -The mock ERC20 token serves two purposes in the demo: it is used to pay for gas and also as the token for performing transfer transactions.

  • How does the API handle the process of transferring tokens without gas?

    -The API handles the process by sending a request specifying the function to call, its parameters, and the token for payment. It then responds with a payload that the user signs with their wallet, and the transaction is executed automatically.

  • What does the term 'abstract test net' refer to in the context of the demo?

    -The 'abstract test net' refers to a test network environment where the demo is deployed, allowing for the testing of the sci-fi API and its functionalities without using real assets.

  • How is the transaction executed after the user signs the payload from the API?

    -After the user signs the payload, the transaction is automatically executed by the system, without the need for token approvals, and the user's wallet is debited a small amount to pay for the transaction.

  • What is Etherscan and why is it mentioned in the demo?

    -Etherscan is a blockchain explorer that allows users to view transaction details on the Ethereum blockchain. It is mentioned in the demo to show the transaction details after the transfer of tokens.

  • How does the integration of sci-fi's API into the code work in the demo?

    -The integration involves setting up with Web3.js and using a custom chain (abstract test net), encoding the functional data for the transfer, preparing the API request payload, fetching the response, creating a wallet client, finding the user's latest nonce, and preparing the transaction data for the paymaster.

  • What is the final step in the integration process after preparing the transaction data?

    -The final step is to send the transaction, which triggers the signature from the wallet client, and then wait for the transaction receipt to confirm the transaction's completion.

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Etiquetas Relacionadas
BlockchainAPI IntegrationGas SponsorshipToken PaymentsSmart ContractsTestnet DemoEthereumWallet BalanceTransaction FeesCryptocurrency
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