diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 0000000..545e08b
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,27 @@
+name: Ruby
+
+on:
+  push:
+    branches:
+      - main
+
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    name: Ruby ${{ matrix.ruby }}
+    strategy:
+      matrix:
+        ruby:
+          - '3.3.3'
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby }}
+        bundler-cache: true
+    - name: Run the default task
+      run: bundle exec rake
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/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md
new file mode 100644
index 0000000..67fe8ce
--- /dev/null
+++ b/CODE_OF_CONDUCT.md
@@ -0,0 +1,132 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+We as members, contributors, and leaders pledge to make participation in our
+community a harassment-free experience for everyone, regardless of age, body
+size, visible or invisible disability, ethnicity, sex characteristics, gender
+identity and expression, level of experience, education, socio-economic status,
+nationality, personal appearance, race, caste, color, religion, or sexual
+identity and orientation.
+
+We pledge to act and interact in ways that contribute to an open, welcoming,
+diverse, inclusive, and healthy community.
+
+## Our Standards
+
+Examples of behavior that contributes to a positive environment for our
+community include:
+
+* Demonstrating empathy and kindness toward other people
+* Being respectful of differing opinions, viewpoints, and experiences
+* Giving and gracefully accepting constructive feedback
+* Accepting responsibility and apologizing to those affected by our mistakes,
+  and learning from the experience
+* Focusing on what is best not just for us as individuals, but for the overall
+  community
+
+Examples of unacceptable behavior include:
+
+* The use of sexualized language or imagery, and sexual attention or advances of
+  any kind
+* Trolling, insulting or derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or email address,
+  without their explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Enforcement Responsibilities
+
+Community leaders are responsible for clarifying and enforcing our standards of
+acceptable behavior and will take appropriate and fair corrective action in
+response to any behavior that they deem inappropriate, threatening, offensive,
+or harmful.
+
+Community leaders 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, and will communicate reasons for moderation
+decisions when appropriate.
+
+## Scope
+
+This Code of Conduct applies within all community spaces, and also applies when
+an individual is officially representing the community in public spaces.
+Examples of representing our community include using an official email address,
+posting via an official social media account, or acting as an appointed
+representative at an online or offline event.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported to the community leaders responsible for enforcement at
+[INSERT CONTACT METHOD].
+All complaints will be reviewed and investigated promptly and fairly.
+
+All community leaders are obligated to respect the privacy and security of the
+reporter of any incident.
+
+## Enforcement Guidelines
+
+Community leaders will follow these Community Impact Guidelines in determining
+the consequences for any action they deem in violation of this Code of Conduct:
+
+### 1. Correction
+
+**Community Impact**: Use of inappropriate language or other behavior deemed
+unprofessional or unwelcome in the community.
+
+**Consequence**: A private, written warning from community leaders, providing
+clarity around the nature of the violation and an explanation of why the
+behavior was inappropriate. A public apology may be requested.
+
+### 2. Warning
+
+**Community Impact**: A violation through a single incident or series of
+actions.
+
+**Consequence**: A warning with consequences for continued behavior. No
+interaction with the people involved, including unsolicited interaction with
+those enforcing the Code of Conduct, for a specified period of time. This
+includes avoiding interactions in community spaces as well as external channels
+like social media. Violating these terms may lead to a temporary or permanent
+ban.
+
+### 3. Temporary Ban
+
+**Community Impact**: A serious violation of community standards, including
+sustained inappropriate behavior.
+
+**Consequence**: A temporary ban from any sort of interaction or public
+communication with the community for a specified period of time. No public or
+private interaction with the people involved, including unsolicited interaction
+with those enforcing the Code of Conduct, is allowed during this period.
+Violating these terms may lead to a permanent ban.
+
+### 4. Permanent Ban
+
+**Community Impact**: Demonstrating a pattern of violation of community
+standards, including sustained inappropriate behavior, harassment of an
+individual, or aggression toward or disparagement of classes of individuals.
+
+**Consequence**: A permanent ban from any sort of public interaction within the
+community.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage],
+version 2.1, available at
+[https://www.contributor-covenant.org/version/2/1/code_of_conduct.html][v2.1].
+
+Community Impact Guidelines were inspired by
+[Mozilla's code of conduct enforcement ladder][Mozilla CoC].
+
+For answers to common questions about this code of conduct, see the FAQ at
+[https://www.contributor-covenant.org/faq][FAQ]. Translations are available at
+[https://www.contributor-covenant.org/translations][translations].
+
+[homepage]: https://www.contributor-covenant.org
+[v2.1]: https://www.contributor-covenant.org/version/2/1/code_of_conduct.html
+[Mozilla CoC]: https://github.com/mozilla/diversity
+[FAQ]: https://www.contributor-covenant.org/faq
+[translations]: https://www.contributor-covenant.org/translations
diff --git a/Gemfile b/Gemfile
new file mode 100644
index 0000000..5540603
--- /dev/null
+++ b/Gemfile
@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+# Specify your gem's dependencies in threads-api.gemspec
+gemspec
+
+gem "rake", "~> 13.0"
+gem "rspec", "~> 3.0"
+
+gem "standard", group: [:development, :test]
+gem "webmock", group: :test
diff --git a/Gemfile.lock b/Gemfile.lock
new file mode 100644
index 0000000..a5ed49f
--- /dev/null
+++ b/Gemfile.lock
@@ -0,0 +1,101 @@
+PATH
+  remote: .
+  specs:
+    threads-api (0.0.1.pre)
+      faraday (>= 2.0)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.8.6)
+      public_suffix (>= 2.0.2, < 6.0)
+    ast (2.4.2)
+    bigdecimal (3.1.8)
+    crack (1.0.0)
+      bigdecimal
+      rexml
+    diff-lcs (1.5.1)
+    faraday (2.9.2)
+      faraday-net_http (>= 2.0, < 3.2)
+    faraday-net_http (3.1.0)
+      net-http
+    hashdiff (1.1.0)
+    json (2.7.2)
+    language_server-protocol (3.17.0.3)
+    lint_roller (1.1.0)
+    net-http (0.4.1)
+      uri
+    parallel (1.25.1)
+    parser (3.3.3.0)
+      ast (~> 2.4.1)
+      racc
+    public_suffix (5.1.1)
+    racc (1.8.0)
+    rainbow (3.1.1)
+    rake (13.2.1)
+    regexp_parser (2.9.2)
+    rexml (3.3.0)
+      strscan
+    rspec (3.13.0)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.0)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.1)
+    rubocop (1.64.1)
+      json (~> 2.3)
+      language_server-protocol (>= 3.17.0)
+      parallel (~> 1.10)
+      parser (>= 3.3.0.2)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.31.1, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 2.4.0, < 3.0)
+    rubocop-ast (1.31.3)
+      parser (>= 3.3.1.0)
+    rubocop-performance (1.21.1)
+      rubocop (>= 1.48.1, < 2.0)
+      rubocop-ast (>= 1.31.1, < 2.0)
+    ruby-progressbar (1.13.0)
+    standard (1.37.0)
+      language_server-protocol (~> 3.17.0.2)
+      lint_roller (~> 1.0)
+      rubocop (~> 1.64.0)
+      standard-custom (~> 1.0.0)
+      standard-performance (~> 1.4)
+    standard-custom (1.0.2)
+      lint_roller (~> 1.0)
+      rubocop (~> 1.50)
+    standard-performance (1.4.0)
+      lint_roller (~> 1.1)
+      rubocop-performance (~> 1.21.0)
+    strscan (3.1.0)
+    unicode-display_width (2.5.0)
+    uri (0.13.0)
+    webmock (3.23.1)
+      addressable (>= 2.8.0)
+      crack (>= 0.3.2)
+      hashdiff (>= 0.4.0, < 2.0.0)
+
+PLATFORMS
+  arm64-darwin-23
+  ruby
+
+DEPENDENCIES
+  rake (~> 13.0)
+  rspec (~> 3.0)
+  standard
+  threads-api!
+  webmock
+
+BUNDLED WITH
+   2.5.13
diff --git a/LICENSE.txt b/LICENSE.txt
new file mode 100644
index 0000000..ae67026
--- /dev/null
+++ b/LICENSE.txt
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2024 David Celis
+
+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..aa30ed0
--- /dev/null
+++ b/README.md
@@ -0,0 +1,64 @@
+# Threads API
+
+`threads-api` is a Ruby client for [Threads](https://developers.facebook.com/docs/threads), providing a simple interface for interacting with its API endpoints after the OAuth2 handshake is initialized.
+
+## Installation
+
+Install the gem and add it to your application's Gemfile by executing:
+
+```sh
+$ bundle add threads-api
+```
+
+If your'e not using bundler to manage your dependencies, you can install the gem manually:
+
+```sh
+$ gem install threads-api
+```
+
+## Usage
+
+The Threads API uses OAuth2 for authentication. While this client won't initialize the handshake for you (which requires a web server to direct the user to Facebook and accept a callback), it will allow you to _finish_ the handshake by exchanging the OAuth2 code from your callback for an access token:
+
+```ruby
+client = Threads::API::OAuth2::Client.new(client_id: ENV["THREADS_CLIENT_ID"], client_secret: ENV["THREADS_CLIENT_SECRET"])
+response = client.access_token(code: params[:code], redirect_uri: "https://example.com/threads/oauth/callback")
+
+# Save the access token and user ID for future requests.
+access_token = response.access_token
+user_id = response.user_id
+```
+
+The access token returned by this initial exchange is short-lived and only valid for one hour. You can exchange it for a long-lived access token by calling `exchange_access_token`:
+
+```ruby
+response = client.exchange_access_token(access_token)
+
+# Save the long-lived access token for future requests.
+access_token = response.access_token
+expires_at = Time.now + response.expires_in
+```
+
+Long-lived access tokens are valid for 60 days. After one day (but before the token expires), you can refresh them by calling `refresh_access_token`:
+
+```ruby
+response = client.refresh_access_token(access_token)
+
+# Save the refreshed access token for future requests.
+access_token = response.access_token
+expires_at = Time.now + response.expires_in
+```
+
+Once you have a valid access token, whether it's short-lived or long-lived, you can use it to make requests to the Threads API.
+
+## Contributing
+
+Bug reports and pull requests are welcome on GitHub at https://github.com/davidcelis/threads-api. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the [code of conduct](https://github.com/davidcelis/threads-api/blob/main/CODE_OF_CONDUCT.md).
+
+## 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 `threads-api` project's codebases, issue trackers, chat rooms and mailing lists is expected to follow the [code of conduct](https://github.com/davidcelis/threads-api/blob/main/CODE_OF_CONDUCT.md).
diff --git a/Rakefile b/Rakefile
new file mode 100644
index 0000000..b6ae734
--- /dev/null
+++ b/Rakefile
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+require "bundler/gem_tasks"
+require "rspec/core/rake_task"
+
+RSpec::Core::RakeTask.new(:spec)
+
+task default: :spec
diff --git a/lib/threads/api.rb b/lib/threads/api.rb
new file mode 100644
index 0000000..2857923
--- /dev/null
+++ b/lib/threads/api.rb
@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+require "faraday"
+
+require_relative "api/oauth2/client"
+require_relative "api/version"
diff --git a/lib/threads/api/oauth2/client.rb b/lib/threads/api/oauth2/client.rb
new file mode 100644
index 0000000..349f369
--- /dev/null
+++ b/lib/threads/api/oauth2/client.rb
@@ -0,0 +1,57 @@
+module Threads
+  module API
+    module OAuth2
+      class Client
+        ShortLivedResponse = Struct.new(:access_token, :user_id)
+        LongLivedResponse = Struct.new(:access_token, :token_type, :expires_in)
+
+        def initialize(client_id:, client_secret:)
+          @client_id = client_id
+          @client_secret = client_secret
+        end
+
+        def access_token(code:, redirect_uri:)
+          response = connection.post("/oauth/access_token", {
+            client_id: @client_id,
+            client_secret: @client_secret,
+            code: code,
+            grant_type: "authorization_code",
+            redirect_uri: redirect_uri
+          })
+
+          ShortLivedResponse.new(*response.body.values_at("access_token", "user_id"))
+        end
+
+        def exchange_access_token(access_token)
+          response = connection.get("/access_token", {
+            client_secret: @client_secret,
+            grant_type: "th_exchange_token",
+            access_token: access_token
+          })
+
+          LongLivedResponse.new(*response.body.values_at("access_token", "token_type", "expires_in"))
+        end
+
+        def refresh_access_token(access_token)
+          response = connection.get("/refresh_access_token", {
+            grant_type: "th_refresh_token",
+            access_token: access_token
+          })
+
+          LongLivedResponse.new(*response.body.values_at("access_token", "token_type", "expires_in"))
+        end
+
+        private
+
+        def connection
+          @connection ||= Faraday.new(url: "https://graph.threads.net") do |f|
+            f.request :url_encoded
+
+            f.response :json
+            f.response :raise_error
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/lib/threads/api/version.rb b/lib/threads/api/version.rb
new file mode 100644
index 0000000..09fb89e
--- /dev/null
+++ b/lib/threads/api/version.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+module Threads
+  module API
+    VERSION = "0.0.1.pre"
+  end
+end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
new file mode 100644
index 0000000..3c8edc6
--- /dev/null
+++ b/spec/spec_helper.rb
@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+require "threads/api"
+require "webmock/rspec"
+
+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
diff --git a/spec/threads/api/oauth2/client_spec.rb b/spec/threads/api/oauth2/client_spec.rb
new file mode 100644
index 0000000..2b40748
--- /dev/null
+++ b/spec/threads/api/oauth2/client_spec.rb
@@ -0,0 +1,67 @@
+# frozen_string_literal: true
+
+require "spec_helper"
+
+RSpec.describe Threads::API::OAuth2::Client do
+  let(:client) { described_class.new(client_id: "CLIENT_ID", client_secret: "CLIENT_SECRET") }
+
+  describe "#access_token" do
+    let!(:request) do
+      stub_request(:post, "https://graph.threads.net/oauth/access_token")
+        .with(body: {
+          client_id: "CLIENT_ID",
+          client_secret: "CLIENT_SECRET",
+          grant_type: "authorization_code",
+          redirect_uri: "http://example.com/threads/oauth/callback",
+          code: "CODE"
+        })
+        .to_return(body: {access_token: "ACCESS_TOKEN", user_id: 1234567890}.to_json, headers: {"Content-Type" => "application/json"})
+    end
+
+    let(:response) { client.access_token(code: "CODE", redirect_uri: "http://example.com/threads/oauth/callback") }
+
+    it "returns an access token" do
+      expect(response.access_token).to eq("ACCESS_TOKEN")
+      expect(response.user_id).to eq(1234567890)
+    end
+  end
+
+  describe "#exchange_access_token" do
+    let!(:request) do
+      stub_request(:get, "https://graph.threads.net/access_token")
+        .with(query: {
+          client_secret: "CLIENT_SECRET",
+          grant_type: "th_exchange_token",
+          access_token: "ACCESS_TOKEN"
+        })
+        .to_return(body: {access_token: "LONG_LIVED_TOKEN", token_type: "bearer", expires_in: 5184000}.to_json, headers: {"Content-Type" => "application/json"})
+    end
+
+    let(:response) { client.exchange_access_token("ACCESS_TOKEN") }
+
+    it "returns a long-lived access token" do
+      expect(response.access_token).to eq("LONG_LIVED_TOKEN")
+      expect(response.token_type).to eq("bearer")
+      expect(response.expires_in).to eq(5184000)
+    end
+  end
+
+  describe "#refresh_access_token" do
+    let!(:request) do
+      stub_request(:get, "https://graph.threads.net/refresh_access_token")
+        .with(query: {
+          grant_type: "th_refresh_token",
+          access_token: "LONG_LIVED_TOKEN"
+        })
+        .to_return(body: {access_token: "REFRESHED_TOKEN", token_type: "bearer", expires_in: 5184000}.to_json, headers: {"Content-Type" => "application/json"})
+    end
+
+    let(:response) { client.refresh_access_token("LONG_LIVED_TOKEN") }
+
+    it "returns a refreshed access token" do
+      expect(response.access_token).to eq("REFRESHED_TOKEN")
+      expect(response.token_type).to eq("bearer")
+      expect(response.expires_in).to eq(5184000)
+    end
+  end
+end
diff --git a/threads-api.gemspec b/threads-api.gemspec
new file mode 100644
index 0000000..da4af32
--- /dev/null
+++ b/threads-api.gemspec
@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+
+require_relative "lib/threads/api/version"
+
+Gem::Specification.new do |spec|
+  spec.name = "threads-api"
+  spec.version = Threads::API::VERSION
+  spec.authors = ["David Celis"]
+  spec.email = ["me@davidcel.is"]
+
+  spec.summary = "Provides an API client for Meta's microblogging social network, Threads."
+  spec.homepage = "https://github.com/davidcelis/threads-api"
+  spec.license = "MIT"
+  spec.required_ruby_version = ">= 3.0.0"
+
+  spec.metadata["allowed_push_host"] = "https://rubygems.org"
+
+  spec.metadata["homepage_uri"] = spec.homepage
+  spec.metadata["source_code_uri"] = spec.homepage
+
+  # 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.
+  gemspec = File.basename(__FILE__)
+  spec.files = IO.popen(%w[git ls-files -z], chdir: __dir__, err: IO::NULL) do |ls|
+    ls.readlines("\x0", chomp: true).reject do |f|
+      (f == gemspec) ||
+        f.start_with?(*%w[bin/ test/ spec/ features/ .git .github appveyor Gemfile])
+    end
+  end
+  spec.bindir = "exe"
+  spec.executables = spec.files.grep(%r{\Aexe/}) { |f| File.basename(f) }
+  spec.require_paths = ["lib"]
+
+  # Uncomment to register a new dependency of your gem
+  spec.add_dependency "faraday", ">= 2.0"
+
+  # For more information and examples about making a new gem, check out our
+  # guide at: https://bundler.io/guides/creating_gem.html
+end