diff --git a/Gemfile b/Gemfile
new file mode 100644
index 0000000..0bd1d80
--- /dev/null
+++ b/Gemfile
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+group :development do
+  gem "rubocop"
+end
diff --git a/Gemfile.lock b/Gemfile.lock
new file mode 100644
index 0000000..715786a
--- /dev/null
+++ b/Gemfile.lock
@@ -0,0 +1,39 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    ast (2.4.2)
+    json (2.7.2)
+    language_server-protocol (3.17.0.3)
+    parallel (1.24.0)
+    parser (3.3.0.5)
+      ast (~> 2.4.1)
+      racc
+    racc (1.7.3)
+    rainbow (3.1.1)
+    regexp_parser (2.9.0)
+    rexml (3.2.6)
+    rubocop (1.63.1)
+      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 (1.31.2)
+      parser (>= 3.3.0.4)
+    ruby-progressbar (1.13.0)
+    unicode-display_width (2.5.0)
+
+PLATFORMS
+  arm64-darwin-22
+  ruby
+
+DEPENDENCIES
+  rubocop
+
+BUNDLED WITH
+   2.5.6
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..1feca93
--- /dev/null
+++ b/README.md
@@ -0,0 +1,47 @@
+# deploy-tools
+
+## Development
+
+Install dependencies.
+
+```shell
+bundle install
+```
+
+Run rubocop (including on the `.gemspec` file).
+
+```shell
+bundle exec rubocop
+```
+
+Build the gem. (Example for `v0.2.0`)
+
+```shell
+$ gem build deploy-tools.gemspec
+WARNING:  licenses is empty, but is recommended. Use an license identifier from
+https://spdx.org/licenses or 'Nonstandard' for a nonstandard license,
+or set it to nil if you don't want to specify a license.
+WARNING:  See https://guides.rubygems.org/specification-reference/ for help
+  Successfully built RubyGem
+  Name: deploy-tools
+  Version: 0.2.0
+  File: deploy-tools-0.2.0.gem
+```
+
+Create a [release on the Github repo](https://github.com/simplepractice/deploy-tools/releases). Attach the built gem file as a release asset.
+
+## Usage
+
+To see installation and usage of the `deploy-tools` gem, see examples in `Makefile`s in deployable repos.
+
+Example: [simplepractice/simplepractice Makefile L6L16-L20 (ff81396)](https://github.com/simplepractice/simplepractice/blob/ff8139631c546804aae9a9577ee04bc18b21c987/Makefile#L6-L20)
+
+```shell
+DEPLOY_TOOLS_VERSION = 0.1.4
+# ...
+echo "Downloading deploy-tools gem"
+wget -O deploy-tools.gem https://github.com/simplepractice/deploy-tools/releases/download/$(DEPLOY_TOOLS_VERSION)/deploy-tools-$(DEPLOY_TOOLS_VERSION).gem
+echo "Installing gem"
+gem install deploy-tools.gem
+rm deploy-tools.gem
+```
diff --git a/bin/prompt_for_unusual_local_git_state b/bin/prompt_for_unusual_local_git_state
new file mode 100755
index 0000000..c23ff9c
--- /dev/null
+++ b/bin/prompt_for_unusual_local_git_state
@@ -0,0 +1,7 @@
+#!/usr/bin/env ruby
+# Hacky wrapper file to call the corresponding shell script. By default, installed gems run scripts as if they are Ruby,
+# and do not respect the shebang line (e.g. a bash shebang). This file is a workaround to call the shell script directly.
+# Hack source: https://stackoverflow.com/a/27988355/2291928
+
+system("#{__FILE__}.sh #{ARGV.join(' ')}")
+exit $?.exitstatus
diff --git a/bin/prompt_for_unusual_local_git_state.sh b/bin/prompt_for_unusual_local_git_state.sh
new file mode 100755
index 0000000..80f048f
--- /dev/null
+++ b/bin/prompt_for_unusual_local_git_state.sh
@@ -0,0 +1,89 @@
+#!/usr/bin/env bash
+# Checks local git state for unusual conditions and prompts the user to confirm before deploying.
+#
+# This is a safety measure to prevent accidental deployments of unintended target commits.
+# The purpose is to draw attention to unusual conditions to be reviewed carefully.
+#
+# This script is intended to be used as a pre-deploy hook in a deployment script for manual/local deployments.
+# It is not intended for automated deployments. Set CI=true to skip.
+#
+# Releases typically deploy the HEAD of the release branch. The conditions in this script favor that typical case.
+# There are valid situations (rollback, hotfix, temporary config changes) which trigger warnings. That's OK/expected.
+# In such situations, the user should review carefully and confirm the deployment at their discretion.
+#
+# Usage: $0 <GIT_REMOTE> <GIT_RELEASE_BRANCH> <REVISION>
+# - git_remote: The remote to fetch the release branch from e.g. "origin".
+# - git_release_branch: The release branch to compare the target REVISION against e.g. "main".
+# - revision: The specific commit hash being deployed e.g. "41af8fa0fc80b7f590a0f46eccd4956b4a45c932".
+
+if [ "${CI}" = "true" ]; then
+  echo "CI environment detected. Skipping check for unusual local git state."
+  exit 0
+fi
+
+git_remote="$1"
+git_release_branch="$2"
+revision="$3"
+
+if [ -z "${git_remote}" ] || [ -z "${git_release_branch}" ] || [ -z "${revision}" ]; then
+  echo "ERROR: Missing required arguments. Usage: $0 <GIT_REMOTE> <GIT_RELEASE_BRANCH> <REVISION>"
+  exit 1
+fi
+
+set -euo pipefail
+
+git fetch "${git_remote}" "${git_release_branch}" || { echo "ERROR: git fetch failed."; exit 1; }
+
+show_warning_prompt='false'
+
+echo "Checking if there are any uncommitted changes..."
+if [ -z "$(git status --porcelain)" ]; then
+  echo "(check passed) Git state is clean. There are no uncommitted changes."
+else
+  show_warning_prompt='true'
+  echo "WARNING: Uncommitted changes detected!"
+  echo "⬇ Review the git status. ⬇"
+  git status
+  echo
+fi
+
+echo "Checking if the currently checked out branch is the release branch ${git_release_branch}..."
+current_branch=$(git rev-parse --abbrev-ref HEAD)
+if [ "${current_branch}" = "${git_release_branch}" ]; then
+  echo "(check passed) On ${current_branch} branch."
+else
+  show_warning_prompt='true'
+  echo "WARNING: Not on ${git_release_branch} branch! Currently on ${current_branch} branch."
+  echo "⬇ Review the git log for the currently checked out commit. ⬇"
+  git --no-pager log -1
+  echo
+fi
+
+echo "Checking if REVISION=${revision} is the HEAD of the up-to-date remote release branch ${git_remote}/${git_release_branch}..."
+remote_release_branch_head="$(git rev-parse "${git_remote}/${git_release_branch}")"
+if [ "${revision}" = "${remote_release_branch_head}" ]; then
+  echo "(check passed) REVISION=${revision} is the HEAD of the up-to-date remote release branch ${git_remote}/${git_release_branch}."
+else
+  show_warning_prompt='true'
+
+  remote_release_branch_relative_time="$(git --no-pager log -1 --pretty=format:'%cr' "${remote_release_branch_head}")"
+  revision_relative_time="$(git --no-pager log -1 --pretty=format:'%cr' "${revision}")"
+
+  echo "WARNING: REVISION is not the HEAD of the remote release branch ${git_remote}/${git_release_branch}!"
+  echo "- ${remote_release_branch_head} ${git_remote}/${git_release_branch} (${remote_release_branch_relative_time})"
+  echo "- ${revision} REVISION (${revision_relative_time})"
+  echo "⬇ Review the git log for ${git_remote}/${git_release_branch} (committed ${remote_release_branch_relative_time}). ⬇"
+  git --no-pager log -1 "${git_remote}/${git_release_branch}"
+  echo "⬇ Review the git log for REVISION (committed ${revision_relative_time}). ⬇"
+  git --no-pager log -1 "${revision}"
+  echo
+fi
+
+if [ "${show_warning_prompt}" = 'true' ]; then
+  printf "WARNING: Unusual conditions detected! Are you sure you want to deploy? (y/n) "
+  read -r prompt_answer
+  if [ "${prompt_answer}" != "y" ]; then
+    echo "Aborting."
+    exit 1
+  fi
+fi
diff --git a/deploy-tools.gemspec b/deploy-tools.gemspec
index 1223a24..7963f8b 100644
--- a/deploy-tools.gemspec
+++ b/deploy-tools.gemspec
@@ -1,13 +1,18 @@
 Gem::Specification.new do |s|
-  s.name        = 'deploy-tools'
-  s.version     = '0.1.4'
-  s.date        = '2022-06-28'
+  s.name        = "deploy-tools"
+  s.version     = "0.2.0"
+  s.required_ruby_version = ">= 2.7"
   s.summary     = "Deploy tools"
   s.description = "A set of script used for deployment"
-  s.authors     = ["Tony Nyurkin", "Serhii Voronoi"]
-  s.email       = 'tony@simplepractice.com'
-  s.files       = `git ls-files `.split("\n")
+  s.authors     = ["Tony Nyurkin", "Serhii Voronoi", "George Pantazes"]
+  s.email       = "infra@simplepractice.com"
+  s.homepage    = "https://github.com/simplepractice/deploy-tools"
+  s.files       = ["README.md", *Dir.glob("bin/*")]
   s.bindir      = "bin"
-  s.executables = ["blue_green_switch", "detect_inactive_color"]
-  s.add_runtime_dependency 'aws-sdk-elasticloadbalancingv2', '~>1.44'
+  s.executables = [
+    "blue_green_switch",
+    "detect_inactive_color",
+    "prompt_for_unusual_local_git_state"
+  ]
+  s.add_runtime_dependency "aws-sdk-elasticloadbalancingv2", "~>1.44"
 end