Tweet With Contract

A Node.js application that seamlessly listens for tweet events from a Solidity smart contract and automates the posting of paid tweets using an encumbered account. Leveraging the power of the Twitter Agent Service, it ensures secure tweeting. 🚀

Overview

This application listens for events emitted by the TweetWithOysterAgentService smart contract and posts corresponding tweets on Twitter. The contract charges a small fee (e.g., 0.0001 ETH) per tweet, which is sent to the contract deployer.

Prerequisites

1. Development Environment: Set up the development environment by following the official guide:
   Oyster CVM Setup Guide

2. Smart Contract Deployment: Deploy the TweetWithOysterAgentService.sol smart contract on the network of your choice.

   • Example: A verified contract on Arbitrum Sepolia:
     0x57927f7bc15e6c29e3373c31c0af560508afe7d7

   Note: The TweetWithOysterAgentService contract charges 0.0001 ETH per tweet and sends the fee to the contract deployer.

Environment Setup

1. Create environment variables files with all the required details for the twitter agent service

.env

USERNAME=
USER_EMAIL=
X_APP_NAME=
KMS_ENDPOINT=http://kms_imitator:1100
AGENT_HOST=0.0.0.0

.env.secrets

OPENAI_API_KEY=
USER_PASSWORD=
USER_EMAIL_PASSWORD=

2. Create environment variables files with all the required details for the tweet with contract application service

.env.twc

CONTRACT_ADDRESS=
PORT=

.env.twc.secrets

RPC_URL=

Deployment Steps

Deploy the Application Using Oyster CVM using the following commands

Debug mode:

oyster-cvm deploy --wallet-private-key *** --pcr-preset base/blue/v1.0.0/amd64 --duration-in-minutes 60 --debug --no-stream --docker-compose docker-compose.yml --operator *** --instance-type r6i.xlarge --image-url https://artifacts.marlin.org/oyster/eifs/base-blue_v1.0.0_linux_amd64.eif --init-params ".env:0:0:file:.env" --init-params ".env.secrets:0:0:file:.env.secrets" --init-params ".env.twc:0:0:file:.env.twc" --init-params ".env.twc.secrets:0:0:file:.env.twc.secrets"

Production mode:

oyster-cvm deploy --wallet-private-key *** --pcr-preset base/blue/v1.0.0/amd64 --duration-in-minutes 60 --docker-compose docker-compose.yml --operator *** --instance-type r6i.xlarge --image-url https://artifacts.marlin.org/oyster/eifs/base-blue_v1.0.0_linux_amd64.eif --init-params ".env:1:0:file:.env" --init-params ".env.secrets:1:0:file:.env.secrets" --init-params ".env.twc:0:1:file:.env.twc" --init-params ".env.twc.secrets:0:1:file:.env.twc.secrets"

Usage

1. Generate Access Tokens

Generate access tokens inside the enclave by calling the following endpoint:

curl {oyster-enclave-ip}:{tweet-with-contract-port}/generate_access_keys

Note: This endpoint does not return the API keys or access tokens. It only generates them inside the enclave.

---

2. Start Listening for Tweet Events

Start listening for tweet events inside the enclave by calling the following endpoint:

curl {oyster-enclave-ip}:{tweet-with-contract-port}/start_listening_for_tweet_events

---

3. Post a Tweet via the Smart Contract

Call the tweet function from the deployed smart contract to post a tweet. You can use a explorer or a tool like Remix to interact with the contract.

• Example: Write Contract on Arbitrum Sepolia
• Parameters:
  • tweetContent: The string to be posted on Twitter.
  • Value: Ensure to send at least 0.0001 ETH with the transaction.