Such a problem:

Launched a test project on NPM - @nikitababko/test-repo-2 - npm

Now I’m trying to download it: yarn add @nikitababko/test-repo-2 or npm i @nikitababko/test-repo-2.
And throws an error - npm ERR! 401 Unauthorized - GET https://npm.pkg.github.com/@nikitababko%2Ftest-repo-2 - Your request could not be authenticated by the GitHub Packages service. Please ensure your access token is valid and has the appropriate scopes configured.

Used actions:

name: '🚀 publish'
on:

push:

branches:

- master
jobs:

release:

name: 🚀 publish

runs-on: ubuntu-latest

steps:

- name: 📚 checkout

uses: actions/checkout@v2.3.4

- name: 🟢 node

uses: actions/setup-node@v2.1.5

with:

node-version: 14

registry-url: https://registry.npmjs.org

- name: 🚀 publish

run: npm publish --access public

env:

NODE_AUTH_TOKEN: ${{secrets.NPM_AUTH_TOKEN}}