```ruby
require "gds_api/publishing_api_v2"
require "gds_api/calendars"
require "gds_api/link_checker_api"

module Services
  def self.publishing_api
    @publishing_api ||= GdsApi::PublishingApiV2.new(
      Plek.new.find("publishing-api"),
      bearer_token: ENV["PUBLISHING_API_BEARER_TOKEN"] || "example"
    )
  end

  def self.calendars
    @calendars ||= GdsApi::Calendars.new(Plek.new.find("calendars"))
  end

  def self.link_checker_api
    @link_checker_api ||= GdsApi::LinkCheckerApi.new(Plek.new.find("link-checker-api"))
  end
end
```

Add bearer tokens for link-checker-api authentication
user
```ruby
require "gds_api/publishing_api_v2"
require "gds_api/calendars"
require "gds_api/link_checker_api"

module Services
  def self.publishing_api
    @publishing_api ||= GdsApi::PublishingApiV2.new(
      Plek.new.find("publishing-api"),
      bearer_token: ENV["PUBLISHING_API_BEARER_TOKEN"] || "example"
    )
  end

  def self.calendars
    @calendars ||= GdsApi::Calendars.new(Plek.new.find("calendars"))
  end

  def self.link_checker_api
    @link_checker_api ||= GdsApi::LinkCheckerApi.new(
      Plek.new.find("link-checker-api"),
      bearer_token: ENV['LINK_CHECKER_API_BEARER_TOKEN'],
    )
  end
end
```
assistant