diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b04a8c8
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,11 @@
+/.bundle/
+/.yardoc
+/_yardoc/
+/coverage/
+/doc/
+/pkg/
+/spec/reports/
+/tmp/
+
+# rspec failure tracking
+.rspec_status
diff --git a/.rspec b/.rspec
new file mode 100644
index 0000000..34c5164
--- /dev/null
+++ b/.rspec
@@ -0,0 +1,3 @@
+--format documentation
+--color
+--require spec_helper
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..12fe684
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,7 @@
+---
+sudo: false
+language: ruby
+cache: bundler
+rvm:
+  - 2.6.5
+before_install: gem install bundler -v 1.17.3
diff --git a/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md
new file mode 100644
index 0000000..f146fa4
--- /dev/null
+++ b/CODE_OF_CONDUCT.md
@@ -0,0 +1,74 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to making participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, gender identity and expression, level of experience,
+nationality, personal appearance, race, religion, or sexual identity and
+orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or
+advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic
+  address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct, or to ban temporarily or
+permanently any contributor for other behaviors that they deem inappropriate,
+threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces
+when an individual is representing the project or its community. Examples of
+representing a project or community include using an official project e-mail
+address, posting via an official social media account, or acting as an appointed
+representative at an online or offline event. Representation of a project may be
+further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported by contacting the project team at stepaniuk@mlsdev.com. All
+complaints will be reviewed and investigated and will result in a response that
+is deemed necessary and appropriate to the circumstances. The project team is
+obligated to maintain confidentiality with regard to the reporter of an incident.
+Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
+available at [http://contributor-covenant.org/version/1/4][version]
+
+[homepage]: http://contributor-covenant.org
+[version]: http://contributor-covenant.org/version/1/4/
diff --git a/Gemfile b/Gemfile
new file mode 100644
index 0000000..45436c0
--- /dev/null
+++ b/Gemfile
@@ -0,0 +1,6 @@
+source "https://rubygems.org"
+
+git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
+
+# Specify your gem's dependencies in oauth2_google_token_info_v3.gemspec
+gemspec
diff --git a/Gemfile.lock b/Gemfile.lock
new file mode 100644
index 0000000..f57e6f2
--- /dev/null
+++ b/Gemfile.lock
@@ -0,0 +1,35 @@
+PATH
+  remote: .
+  specs:
+    oauth2_google_token_info_v3 (0.0.1)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    diff-lcs (1.3)
+    rake (13.0.1)
+    rspec (3.9.0)
+      rspec-core (~> 3.9.0)
+      rspec-expectations (~> 3.9.0)
+      rspec-mocks (~> 3.9.0)
+    rspec-core (3.9.1)
+      rspec-support (~> 3.9.1)
+    rspec-expectations (3.9.0)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.9.0)
+    rspec-mocks (3.9.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.9.0)
+    rspec-support (3.9.2)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  bundler
+  oauth2_google_token_info_v3!
+  rake
+  rspec
+
+BUNDLED WITH
+   1.17.3
diff --git a/LICENSE.txt b/LICENSE.txt
new file mode 100644
index 0000000..8ba6965
--- /dev/null
+++ b/LICENSE.txt
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2020 Dmytro Stepaniuk
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..0a6d16f
--- /dev/null
+++ b/README.md
@@ -0,0 +1,43 @@
+# Oauth2GoogleTokenInfoV3
+
+Welcome to your new gem! In this directory, you'll find the files you need to be able to package up your Ruby library into a gem. Put your Ruby code in the file `lib/oauth2_google_token_info_v3`. To experiment with that code, run `bin/console` for an interactive prompt.
+
+TODO: Delete this and the text above, and describe your gem
+
+## Installation
+
+Add this line to your application's Gemfile:
+
+```ruby
+gem 'oauth2_google_token_info_v3'
+```
+
+And then execute:
+
+    $ bundle
+
+Or install it yourself as:
+
+    $ gem install oauth2_google_token_info_v3
+
+## Usage
+
+TODO: Write usage instructions here
+
+## Development
+
+After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake spec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.
+
+To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and tags, and push the `.gem` file to [rubygems.org](https://rubygems.org).
+
+## Contributing
+
+Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/oauth2_google_token_info_v3. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the [Contributor Covenant](http://contributor-covenant.org) code of conduct.
+
+## License
+
+The gem is available as open source under the terms of the [MIT License](https://opensource.org/licenses/MIT).
+
+## Code of Conduct
+
+Everyone interacting in the Oauth2GoogleTokenInfoV3 project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the [code of conduct](https://github.com/[USERNAME]/oauth2_google_token_info_v3/blob/master/CODE_OF_CONDUCT.md).
diff --git a/Rakefile b/Rakefile
new file mode 100644
index 0000000..b7e9ed5
--- /dev/null
+++ b/Rakefile
@@ -0,0 +1,6 @@
+require "bundler/gem_tasks"
+require "rspec/core/rake_task"
+
+RSpec::Core::RakeTask.new(:spec)
+
+task :default => :spec
diff --git a/bin/console b/bin/console
new file mode 100755
index 0000000..cb29a88
--- /dev/null
+++ b/bin/console
@@ -0,0 +1,14 @@
+#!/usr/bin/env ruby
+
+require "bundler/setup"
+require "oauth2_google_token_info_v3"
+
+# You can add fixtures and/or initialization code here to make experimenting
+# with your gem easier. You can also use a different console, if you like.
+
+# (If you use this, don't forget to add pry to your Gemfile!)
+# require "pry"
+# Pry.start
+
+require "irb"
+IRB.start(__FILE__)
diff --git a/bin/setup b/bin/setup
new file mode 100755
index 0000000..dce67d8
--- /dev/null
+++ b/bin/setup
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+set -euo pipefail
+IFS=$'\n\t'
+set -vx
+
+bundle install
+
+# Do any other automated setup that you need to do here
diff --git a/lib/oauth2_google_token_info_v3.rb b/lib/oauth2_google_token_info_v3.rb
new file mode 100644
index 0000000..fd1729f
--- /dev/null
+++ b/lib/oauth2_google_token_info_v3.rb
@@ -0,0 +1,5 @@
+require "oauth2_google_token_info_v3/version"
+require "oauth2_google_token_info_v3/https_request"
+
+module Oauth2GoogleTokenInfoV3
+end
diff --git a/lib/oauth2_google_token_info_v3/https_request.rb b/lib/oauth2_google_token_info_v3/https_request.rb
new file mode 100644
index 0000000..dddf5b3
--- /dev/null
+++ b/lib/oauth2_google_token_info_v3/https_request.rb
@@ -0,0 +1,84 @@
+module Oauth2GoogleTokenInfoV3
+  class HttpsRequest
+    attr_reader :jwt_id_token
+
+    def initialize jwt_id_token
+      @jwt_id_token = jwt_id_token.presence
+    end
+
+    # {
+    #   "iss": "accounts.google.com",
+    #   "azp": "XXX-XXX.apps.googleusercontent.com",
+    #   "aud": "XXX-XXX.apps.googleusercontent.com",
+    #   "sub": "XXX",
+    #   "hd": "example.com",
+    #   "email": "xxx@example.com",
+    #   "email_verified": "true",
+    #   "at_hash": "XXX",
+    #   "name": "XXX XXX",
+    #   "picture": "https://xxx.googleusercontent.com/a-/XXX",
+    #   "given_name": "XXX",
+    #   "family_name": "XXX",
+    #   "locale": "uk",
+    #   "iat": "123",
+    #   "exp": "123",
+    #   "jti": "123XXX",
+    #   "alg": "RS256",
+    #   "kid": "123XXX",
+    #   "typ": "JWT"
+    # }
+    def response
+      @response ||= ::JSON.parse(::Net::HTTP.get(request_uri), symbolize_names: true)
+    rescue ::Net::OpenTimeout
+      retry
+    end
+
+    def subject
+      response.fetch(:sub)
+    end
+    alias_method :google_id, :subject
+
+    def email
+      response.fetch(:email)
+    end
+
+    def hosted_domain
+      response.fetch(:hd)
+    end
+
+    def given_name
+      response.fetch(:given_name)
+    end
+    alias_method :first_name, :given_name
+
+    def family_name
+      response.fetch(:family_name)
+    end
+    alias_method :last_name, :family_name
+
+    def email_verified?
+      response.fetch(:email_verified) == 'true'
+    end
+
+    def locale
+      response.fetch(:locale)
+    end
+
+    def expire_at
+      @expire_at ||= ::Time.at(response.fetch(:exp).to_i).to_datetime
+    end
+
+    def not_expired?
+      expire_at.future?
+    end
+
+    private
+
+    #
+    # https://developers.google.com/identity/sign-in/web/backend-auth#calling-the-tokeninfo-endpoint
+    #
+    def request_uri
+      @request_uri ||= URI("https://www.googleapis.com/oauth2/v3/tokeninfo?id_token=#{ jwt_id_token }")
+    end
+  end
+end
diff --git a/lib/oauth2_google_token_info_v3/version.rb b/lib/oauth2_google_token_info_v3/version.rb
new file mode 100644
index 0000000..38a4298
--- /dev/null
+++ b/lib/oauth2_google_token_info_v3/version.rb
@@ -0,0 +1,3 @@
+module Oauth2GoogleTokenInfoV3
+  VERSION = "0.0.1"
+end
diff --git a/oauth2_google_token_info_v3.gemspec b/oauth2_google_token_info_v3.gemspec
new file mode 100644
index 0000000..7c9f4b4
--- /dev/null
+++ b/oauth2_google_token_info_v3.gemspec
@@ -0,0 +1,38 @@
+
+lib = File.expand_path("../lib", __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+require "oauth2_google_token_info_v3/version"
+
+Gem::Specification.new do |spec|
+  spec.name          = "oauth2_google_token_info_v3"
+  spec.version       = Oauth2GoogleTokenInfoV3::VERSION
+  spec.authors       = ["Dmytro Stepaniuk"]
+  spec.email         = ["stepaniuk@mlsdev.com"]
+
+  spec.summary       = %q{OAuth tokeninfo}
+  spec.description   = %q{google-api-ruby-client still dont have support for oauth_v3 - that's why this gem appeared}
+  spec.homepage      = "https://mlsdev.com"
+  spec.license       = "MIT"
+
+  # Prevent pushing this gem to RubyGems.org. To allow pushes either set the 'allowed_push_host'
+  # to allow pushing to a single host or delete this section to allow pushing to any host.
+  if spec.respond_to?(:metadata)
+    spec.metadata["homepage_uri"] = spec.homepage
+  else
+    raise "RubyGems 2.0 or newer is required to protect against " \
+      "public gem pushes."
+  end
+
+  # Specify which files should be added to the gem when it is released.
+  # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
+  spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
+    `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+  end
+  spec.bindir        = "exe"
+  spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
+  spec.require_paths = ["lib"]
+
+  spec.add_development_dependency "bundler"
+  spec.add_development_dependency "rake"
+  spec.add_development_dependency "rspec"
+end
diff --git a/spec/oauth2_google_token_info_v3_spec.rb b/spec/oauth2_google_token_info_v3_spec.rb
new file mode 100644
index 0000000..087041f
--- /dev/null
+++ b/spec/oauth2_google_token_info_v3_spec.rb
@@ -0,0 +1,9 @@
+RSpec.describe Oauth2GoogleTokenInfoV3 do
+  it "has a version number" do
+    expect(Oauth2GoogleTokenInfoV3::VERSION).not_to be nil
+  end
+
+  it "does something useful" do
+    expect(false).to eq(true)
+  end
+end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
new file mode 100644
index 0000000..2e0cba1
--- /dev/null
+++ b/spec/spec_helper.rb
@@ -0,0 +1,14 @@
+require "bundler/setup"
+require "oauth2_google_token_info_v3"
+
+RSpec.configure do |config|
+  # Enable flags like --only-failures and --next-failure
+  config.example_status_persistence_file_path = ".rspec_status"
+
+  # Disable RSpec exposing methods globally on `Module` and `main`
+  config.disable_monkey_patching!
+
+  config.expect_with :rspec do |c|
+    c.syntax = :expect
+  end
+end