diff --git a/apps/api/Gemfile b/apps/api/Gemfile
index aef3cd7..8fe540d 100644
--- a/apps/api/Gemfile
+++ b/apps/api/Gemfile
@@ -6,6 +6,7 @@ gem "puma", ">= 5.0"
 gem "rubyzip", "~> 2.3"
 gem "blueprinter"
 gem "bootsnap", require: false
+gem "apipie-rails"
 
 gem "activeadmin"
 gem "activeadmin_blaze_theme"
diff --git a/apps/api/app/controllers/api/downloads_controller.rb b/apps/api/app/controllers/api/downloads_controller.rb
index 7fec1db..3b259ee 100644
--- a/apps/api/app/controllers/api/downloads_controller.rb
+++ b/apps/api/app/controllers/api/downloads_controller.rb
@@ -1,4 +1,14 @@
 class Api::DownloadsController < ApiController
+  resource_description do
+    short "File downloads"
+    formats [ "binary" ]
+  end
+
+  api :GET, "/api/download", "Download a file by path"
+  param :path, String, required: true, desc: "File path to download"
+  returns code: 200, desc: "File binary data"
+  error code: 400, desc: "Path is blank"
+  error code: 404, desc: "File not found"
   def show
     path = params[:path]
     return head :bad_request if path.blank?
diff --git a/apps/api/app/controllers/api/events_controller.rb b/apps/api/app/controllers/api/events_controller.rb
index c57ba64..fccb296 100644
--- a/apps/api/app/controllers/api/events_controller.rb
+++ b/apps/api/app/controllers/api/events_controller.rb
@@ -1,4 +1,10 @@
 class Api::EventsController < ApiController
+  resource_description do
+    short "Events"
+  end
+
+  api :GET, "/api/events", "List all events"
+  returns code: 200, desc: "Array of events"
   def index
     render json: EventService.new.index
   end
diff --git a/apps/api/app/controllers/api/images_controller.rb b/apps/api/app/controllers/api/images_controller.rb
index 05725c6..ae4a8ad 100644
--- a/apps/api/app/controllers/api/images_controller.rb
+++ b/apps/api/app/controllers/api/images_controller.rb
@@ -1,4 +1,13 @@
 class Api::ImagesController < ApplicationController
+  resource_description do
+    short "Images"
+    formats [ "binary" ]
+  end
+
+  api :GET, "/api/image/:id", "Get image by ID"
+  param :id, :number, required: true, desc: "Image ID"
+  returns code: 200, desc: "Image binary data"
+  error code: 404, desc: "Image not found"
   def show
     image = ImageService.new.show(ImageShowInputDto.new(id: params[:id]))
     send_file image.file_path, type: image.content_type, disposition: "inline"
diff --git a/apps/api/app/controllers/api/members_controller.rb b/apps/api/app/controllers/api/members_controller.rb
index a2f43db..27a75d2 100644
--- a/apps/api/app/controllers/api/members_controller.rb
+++ b/apps/api/app/controllers/api/members_controller.rb
@@ -1,4 +1,10 @@
 class Api::MembersController < ApiController
+  resource_description do
+    short "Team members"
+  end
+
+  api :GET, "/api/members", "List all team members"
+  returns code: 200, desc: "Array of team members"
   def index
     render json: MemberService.new.index
   end
diff --git a/apps/api/app/controllers/api/rss_controller.rb b/apps/api/app/controllers/api/rss_controller.rb
index 1ed59c3..50288d8 100644
--- a/apps/api/app/controllers/api/rss_controller.rb
+++ b/apps/api/app/controllers/api/rss_controller.rb
@@ -1,9 +1,18 @@
 class Api::RssController < ApiController
+  resource_description do
+    short "RSS feeds"
+    formats [ "xml" ]
+  end
+
+  api :GET, "/api/rss/blog", "Blog RSS feed"
+  returns code: 200, desc: "RSS XML feed of blog posts"
   def blog
     xml = RssService.new.blog_feed
     render xml: xml, content_type: "application/rss+xml"
   end
 
+  api :GET, "/api/rss/releases", "Software releases RSS feed"
+  returns code: 200, desc: "RSS XML feed of software releases"
   def releases
     xml = RssService.new.releases_feed
     render xml: xml, content_type: "application/rss+xml"
diff --git a/apps/api/app/controllers/api/software_controller.rb b/apps/api/app/controllers/api/software_controller.rb
index 01b8d15..c6275e1 100644
--- a/apps/api/app/controllers/api/software_controller.rb
+++ b/apps/api/app/controllers/api/software_controller.rb
@@ -1,4 +1,10 @@
 class Api::SoftwareController < ApiController
+  resource_description do
+    short "Software catalog"
+  end
+
+  api :GET, "/api/software", "List all software entries with releases"
+  returns code: 200, desc: "Array of software entries with nested releases"
   def index
     render json: SoftwareService.new.index
   end
diff --git a/apps/api/app/controllers/api/software_highlighted_controller.rb b/apps/api/app/controllers/api/software_highlighted_controller.rb
index 94f2ac6..88b7219 100644
--- a/apps/api/app/controllers/api/software_highlighted_controller.rb
+++ b/apps/api/app/controllers/api/software_highlighted_controller.rb
@@ -1,4 +1,11 @@
 class Api::SoftwareHighlightedController < ApiController
+  resource_description do
+    short "Highlighted software"
+  end
+
+  api :GET, "/api/software/highlighted", "Get currently highlighted software entry"
+  returns code: 200, desc: "Highlighted software entry with releases"
+  error code: 404, desc: "No highlighted software found"
   def index
     result = SoftwareHighlightedService.new.index
     if result
diff --git a/apps/api/app/controllers/api/wiki_controller.rb b/apps/api/app/controllers/api/wiki_controller.rb
index 474bcd1..48f7942 100644
--- a/apps/api/app/controllers/api/wiki_controller.rb
+++ b/apps/api/app/controllers/api/wiki_controller.rb
@@ -1,4 +1,13 @@
 class Api::WikiController < ApiController
+  resource_description do
+    short "Wiki pages"
+  end
+
+  api :GET, "/api/wiki/pages", "List wiki pages filtered by tag"
+  param :tag, String, required: false, desc: "Filter by tag (blog, howto)"
+  param :limit, :number, required: false, desc: "Limit number of results"
+  param :body, String, required: false, desc: "Include body content (1 = yes)"
+  returns code: 200, desc: "Array of wiki pages"
   # GET /api/wiki/pages?tag=blog|howto[&limit=30][&body=1]
   def index
     render json: WikiService.new.pages(
diff --git a/apps/api/app/controllers/api_controller.rb b/apps/api/app/controllers/api_controller.rb
index af65e22..5038606 100644
--- a/apps/api/app/controllers/api_controller.rb
+++ b/apps/api/app/controllers/api_controller.rb
@@ -1,2 +1,6 @@
 class ApiController < ActionController::API
+  resource_description do
+    api_version "1.0"
+    formats [ "json" ]
+  end
 end
diff --git a/apps/api/app/controllers/files_controller.rb b/apps/api/app/controllers/files_controller.rb
index 1059098..fb023ac 100644
--- a/apps/api/app/controllers/files_controller.rb
+++ b/apps/api/app/controllers/files_controller.rb
@@ -1,6 +1,16 @@
 class FilesController < ApplicationController
   skip_forgery_protection
 
+  resource_description do
+    short "Static files"
+    formats [ "binary" ]
+  end
+
+  api :GET, "/file/*path", "Serve or redirect to a file"
+  param :path, String, required: true, desc: "File path"
+  returns code: 200, desc: "File binary data"
+  returns code: 301, desc: "Redirect to file URL"
+  error code: 404, desc: "File not found"
   def show
     result = FileService.new.show(FileShowInputDto.new(path: params[:path]))
     case result.type
diff --git a/apps/api/app/controllers/update_controller.rb b/apps/api/app/controllers/update_controller.rb
index 40432a9..051c432 100644
--- a/apps/api/app/controllers/update_controller.rb
+++ b/apps/api/app/controllers/update_controller.rb
@@ -1,4 +1,18 @@
 class UpdateController < ApiController
+  resource_description do
+    short "Software updater"
+    formats [ "text" ]
+  end
+
+  api :GET, "/update", "Update software version in database"
+  param :secret, String, required: true, desc: "Authorization secret"
+  param :platform, String, required: false, desc: "Platform name"
+  param :name, String, required: false, desc: "Software name"
+  param :version, String, required: true, desc: "Version string"
+  returns code: 200, desc: "'Updated' on success"
+  error code: 401, desc: "Invalid secret"
+  error code: 400, desc: "Version not provided or invalid arguments"
+  error code: 500, desc: "Internal server error"
   def update
     return render plain: "Unauthorized", status: :unauthorized unless authorized?
     return render plain: "Version not provided", status: :bad_request if params[:version].blank?
diff --git a/apps/api/config/initializers/apipie.rb b/apps/api/config/initializers/apipie.rb
new file mode 100644
index 0000000..11760f6
--- /dev/null
+++ b/apps/api/config/initializers/apipie.rb
@@ -0,0 +1,14 @@
+Apipie.configure do |config|
+  config.app_name = "Teletype Games API"
+  config.api_base_url = ""
+  config.doc_base_url = "/api/docs"
+  config.api_controllers_matcher = [
+    "#{Rails.root}/app/controllers/api/**/*.rb",
+    "#{Rails.root}/app/controllers/update_controller.rb",
+    "#{Rails.root}/app/controllers/files_controller.rb"
+  ]
+  config.validate = false
+  config.translate = false
+  config.default_version = "1.0"
+  config.app_info = "Teletype Games retro game library API"
+end
diff --git a/apps/api/config/routes.rb b/apps/api/config/routes.rb
index 4946f81..20f4df1 100644
--- a/apps/api/config/routes.rb
+++ b/apps/api/config/routes.rb
@@ -1,4 +1,5 @@
 Rails.application.routes.draw do
+  apipie
   devise_for :admin_users, ActiveAdmin::Devise.config
   ActiveAdmin.routes(self)