How to Find Your EAS Project ID for Expo Applications

To find your EAS project ID and update it in your configuration files, follow these steps:

Get Your EAS Project ID

Run the following commands in your project root directory:

# Login to EAS (if you haven't already)
npx eas login

# Initialize or get your project ID
npx eas project:init

The npx eas project:init command will either:

• Create a new EAS project and display the generated project ID, or
• Show your existing project ID if your app is already registered with EAS

The output will look something like this:

✅ Project your-app-name is already registered with EAS
Project ID: 12345678-abcd-1234-efgh-1234567890ab

Update Your Configuration Files

Once you have your project ID, you need to update it in two places:

In eas.json (at the root level)

{
  "cli": {
    "version": ">= 5.9.1",
    "appVersionSource": "remote"
  },
  "projectId": "12345678-abcd-1234-efgh-1234567890ab", // Replace with your actual project ID
  // rest of your configuration...
}

In app.config.ts (under extra.eas.projectId)

export default {
  // other configuration...
  extra: {
    // other configuration...
    eas: {
      projectId: '12345678-abcd-1234-efgh-1234567890ab' // Replace with your actual project ID
    }
  }
}

Verify Your Changes

After updating both files, you can run the following command to verify that EAS recognizes your project:

npx eas project:info

This should display information about your project, confirming that the project ID is correctly configured.

Troubleshooting

Invalid UUID Error

The project ID must be in a valid UUID format (e.g., 12345678-abcd-1234-efgh-1234567890ab). If you see an error like "Invalid UUID appId" when running EAS commands, it means:

• The project ID is not correctly formatted
• The project ID is not properly set in your configuration files
• There's a mismatch between the IDs in eas.json and app.config.ts

Common Issues

Best Practices

• Always backup your configuration files before making changes
• Use environment variables for sensitive configuration when possible
• Verify your setup with npx eas project:info after any changes
• Keep your EAS CLI updated to the latest version for best compatibility

With your EAS project ID properly configured, you can now use EAS services like EAS Build, EAS Submit, and EAS Update for your Expo React Native application!