Gas Fee Delegation Server for Transactions

This repository contains a server implementation for gas fee delegation using Prisma and Node.js. Follow the steps below to set up and run the server.

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Prerequisites

Ensure you have the following installed on your system:

• Node.js (version 22)
• npm (comes with Node.js)
• SQLite (or any database supported by Prisma)

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Step-by-Step Setup

1. Install Dependencies

Run the following command to install the required Node.js packages:

npm install

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2. Configure Environment Variables

Create a .env.local file in the root directory: you can use a template.env file

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4. Prisma Setup

a. Initialize Prisma

Run the following command to initialize Prisma and create the SQLite database:

npx prisma migrate dev --name init

b. Generate Prisma Client

Generate the Prisma client with the command:

npx prisma generate

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5. Start the Server

Run the server in development mode:

npm run dev

The server will start at http://localhost:3000.

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API Endpoints

POST /api/signAsFeePayer

Request

Your contract address should be registered via management UI

• Header:

  {
    "Content-Type": "application/json",
  }

• Body:

  {
    "userSignedTx": "<your-rlp-encoded-signed-transaction>"
  }

Response

• Success:

  {
    "message": "Request was successful",
    "data": {
      /* transaction receipt details */
    }
  }

• Error:

  {
    "message": "Error details",
    "data": "message"
  }

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Contributing

Contributions are welcome! Feel free to submit a pull request or open an issue for discussion.

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License

This project is licensed under the MIT License.