diff --git a/Library/Homebrew/cli/named_args.rb b/Library/Homebrew/cli/named_args.rb
index 1b30ef7d6b9f2..284c18aa9bbe4 100644
--- a/Library/Homebrew/cli/named_args.rb
+++ b/Library/Homebrew/cli/named_args.rb
@@ -256,11 +256,15 @@ def to_paths(only: parent&.only_formula_or_cask, recurse_tap: false)
               paths = []
 
               if formula_path.exist? ||
-                 (!CoreTap.instance.installed? && Homebrew::API::Formula.all_formulae.key?(path.basename.to_s))
+                 (!Homebrew::EnvConfig.no_install_from_api? &&
+                 !CoreTap.instance.installed? &&
+                 Homebrew::API::Formula.all_formulae.key?(path.basename.to_s))
                 paths << formula_path
               end
               if cask_path.exist? ||
-                 (!CoreCaskTap.instance.installed? && Homebrew::API::Cask.all_casks.key?(path.basename.to_s))
+                 (!Homebrew::EnvConfig.no_install_from_api? &&
+                 !CoreCaskTap.instance.installed? &&
+                 Homebrew::API::Cask.all_casks.key?(path.basename.to_s))
                 paths << cask_path
               end
 
diff --git a/Library/Homebrew/test/cask/info_spec.rb b/Library/Homebrew/test/cask/info_spec.rb
index 2c5a5aefc0195..8710a8ba70e21 100644
--- a/Library/Homebrew/test/cask/info_spec.rb
+++ b/Library/Homebrew/test/cask/info_spec.rb
@@ -3,6 +3,11 @@
 require "utils"
 
 RSpec.describe Cask::Info, :cask do
+  before do
+    # Prevent unnecessary network requests in `Utils::Analytics.cask_output`
+    ENV["HOMEBREW_NO_ANALYTICS"] = "1"
+  end
+
   it "displays some nice info about the specified Cask" do
     expect do
       described_class.info(Cask::CaskLoader.load("local-transmission"))
diff --git a/Library/Homebrew/test/formulary_spec.rb b/Library/Homebrew/test/formulary_spec.rb
index 3bc5c5ee05427..8e34f0fb42179 100644
--- a/Library/Homebrew/test/formulary_spec.rb
+++ b/Library/Homebrew/test/formulary_spec.rb
@@ -384,6 +384,10 @@ def formula_json_contents(extra_items = {})
       before do
         ENV.delete("HOMEBREW_NO_INSTALL_FROM_API")
 
+        # avoid unnecessary network calls
+        allow(Homebrew::API::Formula).to receive_messages(all_aliases: {}, all_renames: {})
+        allow(CoreTap.instance).to receive(:tap_migrations).and_return({})
+
         # don't try to load/fetch gcc/glibc
         allow(DevelopmentTools).to receive_messages(needs_libc_formula?: false, needs_compiler_formula?: false)
       end
diff --git a/Library/Homebrew/test/tap_spec.rb b/Library/Homebrew/test/tap_spec.rb
index 8ea9116037af9..44a771fc31a17 100644
--- a/Library/Homebrew/test/tap_spec.rb
+++ b/Library/Homebrew/test/tap_spec.rb
@@ -192,7 +192,7 @@ def setup_completion(link:)
   end
 
   describe "#remote" do
-    it "returns the remote URL" do
+    it "returns the remote URL", :needs_network do
       setup_git_repo
 
       expect(homebrew_foo_tap.remote).to eq("https://github.com/Homebrew/homebrew-foo")