diff --git a/Library/Homebrew/dev-cmd/generate-formula-api.rb b/Library/Homebrew/dev-cmd/generate-formula-api.rb
index 9c7f30548a..b06e99b95b 100644
--- a/Library/Homebrew/dev-cmd/generate-formula-api.rb
+++ b/Library/Homebrew/dev-cmd/generate-formula-api.rb
@@ -5,79 +5,79 @@ require "cli/parser"
 require "formula"
 
 module Homebrew
-  module_function
-
-  sig { returns(CLI::Parser) }
-  def generate_formula_api_args
-    Homebrew::CLI::Parser.new do
-      description <<~EOS
-        Generate `homebrew/core` API data files for <#{HOMEBREW_API_WWW}>.
-        The generated files are written to the current directory.
+  module DevCmd
+    class GenerateFormulaApi < AbstractCommand
+      FORMULA_JSON_TEMPLATE = <<~EOS
+        ---
+        layout: formula_json
+        ---
+        {{ content }}
       EOS
 
-      switch "-n", "--dry-run", description: "Generate API data without writing it to files."
+      cmd_args do
+        description <<~EOS
+          Generate `homebrew/core` API data files for <#{HOMEBREW_API_WWW}>.
+          The generated files are written to the current directory.
+        EOS
 
-      named_args :none
-    end
-  end
+        switch "-n", "--dry-run", description: "Generate API data without writing it to files."
 
-  FORMULA_JSON_TEMPLATE = <<~EOS
-    ---
-    layout: formula_json
-    ---
-    {{ content }}
-  EOS
-
-  def html_template(title)
-    <<~EOS
-      ---
-      title: #{title}
-      layout: formula
-      redirect_from: /formula-linux/#{title}
-      ---
-      {{ content }}
-    EOS
-  end
-
-  def generate_formula_api
-    args = generate_formula_api_args.parse
-
-    tap = CoreTap.instance
-    raise TapUnavailableError, tap.name unless tap.installed?
-
-    unless args.dry_run?
-      directories = ["_data/formula", "api/formula", "formula", "api/internal/v3"]
-      FileUtils.rm_rf directories + ["_data/formula_canonical.json"]
-      FileUtils.mkdir_p directories
-    end
-
-    Homebrew.with_no_api_env do
-      tap_migrations_json = JSON.dump(tap.tap_migrations)
-      File.write("api/formula_tap_migrations.json", tap_migrations_json) unless args.dry_run?
-
-      Formulary.enable_factory_cache!
-      Formula.generating_hash!
-
-      tap.formula_names.each do |name|
-        formula = Formulary.factory(name)
-        name = formula.name
-        json = JSON.pretty_generate(formula.to_hash_with_variations)
-        html_template_name = html_template(name)
-
-        unless args.dry_run?
-          File.write("_data/formula/#{name.tr("+", "_")}.json", "#{json}\n")
-          File.write("api/formula/#{name}.json", FORMULA_JSON_TEMPLATE)
-          File.write("formula/#{name}.html", html_template_name)
-        end
-      rescue
-        onoe "Error while generating data for formula '#{name}'."
-        raise
+        named_args :none
       end
 
-      homebrew_core_tap_json = JSON.generate(tap.to_internal_api_hash)
-      File.write("api/internal/v3/homebrew-core.json", homebrew_core_tap_json) unless args.dry_run?
-      canonical_json = JSON.pretty_generate(tap.formula_renames.merge(tap.alias_table))
-      File.write("_data/formula_canonical.json", "#{canonical_json}\n") unless args.dry_run?
+      sig { override.void }
+      def run
+        tap = CoreTap.instance
+        raise TapUnavailableError, tap.name unless tap.installed?
+
+        unless args.dry_run?
+          directories = ["_data/formula", "api/formula", "formula", "api/internal/v3"]
+          FileUtils.rm_rf directories + ["_data/formula_canonical.json"]
+          FileUtils.mkdir_p directories
+        end
+
+        Homebrew.with_no_api_env do
+          tap_migrations_json = JSON.dump(tap.tap_migrations)
+          File.write("api/formula_tap_migrations.json", tap_migrations_json) unless args.dry_run?
+
+          Formulary.enable_factory_cache!
+          Formula.generating_hash!
+
+          tap.formula_names.each do |name|
+            formula = Formulary.factory(name)
+            name = formula.name
+            json = JSON.pretty_generate(formula.to_hash_with_variations)
+            html_template_name = html_template(name)
+
+            unless args.dry_run?
+              File.write("_data/formula/#{name.tr("+", "_")}.json", "#{json}\n")
+              File.write("api/formula/#{name}.json", FORMULA_JSON_TEMPLATE)
+              File.write("formula/#{name}.html", html_template_name)
+            end
+          rescue
+            onoe "Error while generating data for formula '#{name}'."
+            raise
+          end
+
+          homebrew_core_tap_json = JSON.generate(tap.to_internal_api_hash)
+          File.write("api/internal/v3/homebrew-core.json", homebrew_core_tap_json) unless args.dry_run?
+          canonical_json = JSON.pretty_generate(tap.formula_renames.merge(tap.alias_table))
+          File.write("_data/formula_canonical.json", "#{canonical_json}\n") unless args.dry_run?
+        end
+      end
+
+      private
+
+      def html_template(title)
+        <<~EOS
+          ---
+          title: #{title}
+          layout: formula
+          redirect_from: /formula-linux/#{title}
+          ---
+          {{ content }}
+        EOS
+      end
     end
   end
 end
diff --git a/Library/Homebrew/test/dev-cmd/generate-formula-api_spec.rb b/Library/Homebrew/test/dev-cmd/generate-formula-api_spec.rb
index 26958bffa6..74136d6645 100644
--- a/Library/Homebrew/test/dev-cmd/generate-formula-api_spec.rb
+++ b/Library/Homebrew/test/dev-cmd/generate-formula-api_spec.rb
@@ -1,7 +1,8 @@
 # frozen_string_literal: true
 
 require "cmd/shared_examples/args_parse"
+require "dev-cmd/generate-formula-api"
 
-RSpec.describe "brew generate-formula-api" do
+RSpec.describe Homebrew::DevCmd::GenerateFormulaApi do
   it_behaves_like "parseable arguments"
 end