firestore.rules

rules_version = '2';

// Allow read/write access on all documents to any user signed in to the application
service cloud.firestore {
  match /databases/{database}/documents {
    match /{document=**} {
      // allow read, write: if request.auth != null;
      allow read: if true;
      allow write: if request.auth != null;
    }
  }
}