feat: implement paymaster

[machuwey]

Implement AVNU paymaster sponsored transactions

AVNU is a decentralized exchange build on top of starknet, aside from dex services they offer and Api and SDK to build transactions to be executed through OutsideCall.

Goal

Provide customer gasless transactions for enhanced user experience.

You can find more on how to implement AVNU gasless transactions: https://doc.avnu.fi/starknet-paymaster/guides-and-examples

Instructions to apply

1. Introduce yourself, tell about your background, etc.
2. Describe shortly how you plan to tackle the issue

[PedroCo3lho]

Hello @machuwey, can I work on this issue? I plan to handle the API calls in frontend/src/app/api so we can easily use these API routes through the frontend.

[ikemHood]

Hello, I'm Ikem, a blockchain developer with over 3 years of experience in smart contract development.

I would love to help implement the AVNU paymaster sponsored transactions.
My proposed approach:
Integrate AVNU SDK for transaction building
Implement paymaster verification logic using AVNU's API
Create wrapper functions for sponsored transaction execution through Outside Call
Add comprehensive testing for gasless transaction flows

Looking forward to contributing to this enhancement! 🚀

[ShantelPeters]

I am a frontend and blockchain developer with a strong background in HTML, TYPESCRIPT, JAVASCRIPT, REACT , CAIRO,SOLIDITY ETC.

I will tackle this issue by implementing AVNU Paymaster-sponsored transactions: integrate the AVNU SDK, build transaction payloads in the OutsideCall format, configure the Paymaster for gas sponsorship, sign and send transactions using the SDK, and handle responses for successful execution.
Validate the implementation on a testnet for a seamless user experience.

[manlikeHB]

Hi, I am a Cairo developer with great experience contributing to lots of other projects.

I will go through the provided resources to understand how to integrate ANVU paymester, then apply my skills from there to complete the task.

[suhas-sensei]

gm @machuwey, Suhas here, having worked in the last od, where I’ve worked on integrating on-chain mechanics into games and have contributed to optimizing user experience with tools like SPV wallets and Web3 integrations.

To tackle this issue, I plan to leverage the AVNU paymaster API to seamlessly sponsor user gas fees by integrating their SDK for gasless transactions. This involves verifying user account compatibility, retrieving gas token prices, building typed data for user signatures, and executing transactions, ensuring smooth deployment and enhanced user experience.

Draft PR : 24 hours

[mexes20]

May I pick this up? I have three years experience in Software development and have contributed to some projects on OD here.

I've worked previously with the implementation of AVNu's Paymaster

ETA: 10 hours.

[JoE11-y]

I'd like to handle this task.

[Benjtalkshow]

Would love to tackle this!

[Unickhub]

I’d like to work on this.

[PedroCo3lho]

Hello @machuwey, can I work on this issue? I plan to handle the API calls in frontend/src/app/api so we can easily use these API routes through the frontend.

Can I try solving this issue?

[Amarjeet325]

Hi , I am a proficient MERN stack developer with experience in full-stack development. I believe I can contribute effectively to this project. Could you kindly assign this issue/task to me?

[TheSQLguy]

i am a typescript dev, a newcomer here, and willing to contribute. My solution includes

I plan to use the AVNU Paymaster API to sponser user gas fees and enable gasless txns. This involves integrating their SDK, verifying user accounts, checking gas token prices, generating data for user signatures, and executing txns. This approach ensures smooth deployment and a better user experience.