How to fix npm ERR! code E403 npm ERR! 403 Forbidden - PUT https://registry.npmjs.org/package - You do not have permission to publish in npm

Search for existing packages:

# Search npm for the package name
npm search <package-name>

# Or check directly
npm view <package-name>

If it exists, you'll need a different name or use a scoped package.

Scoped packages include your username/org:

{
  "name": "@yourusername/package-name",
  "version": "1.0.0"
}

Publish with public access:

npm publish --access public

npm requires verified email to publish:

1. Go to npmjs.com
2. Log in to your account
3. Check for email verification banner
4. Click verification link in your email

Then retry:

npm publish

Check your current login:

# Check who you're logged in as
npm whoami

# If wrong user, log out and log in
npm logout
npm login

You cannot republish the same version:

# Increment version
npm version patch  # 1.0.0 -> 1.0.1
# or
npm version minor  # 1.0.0 -> 1.1.0

# Then publish
npm publish

Check package.json for private setting:

{
  "name": "my-package",
  "private": false  // Remove or set to false
}

The "private": true setting prevents publishing.

For org-scoped packages (@org/package):

1. Go to npmjs.com/org/[your-org]
2. Check you're a member with publish permissions
3. Ask org admin to add you if needed

Verify with:

npm team ls @org:developers