diff --git a/.github/scripts/update-homebrew-formula.sh b/.github/scripts/update-homebrew-formula.sh
new file mode 100755
index 0000000..d5412c6
--- /dev/null
+++ b/.github/scripts/update-homebrew-formula.sh
@@ -0,0 +1,128 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+VERSION="${VERSION:?VERSION is required}"
+REPOSITORY="${GITHUB_REPOSITORY:-muxx/redmine-cli}"
+DIST_DIR="${DIST_DIR:-dist}"
+TAP_REPOSITORY="${HOMEBREW_TAP_REPOSITORY:-muxx/homebrew-tap}"
+FORMULA_NAME="${HOMEBREW_FORMULA_NAME:-redmine-cli}"
+FORMULA_CLASS="${HOMEBREW_FORMULA_CLASS:-RedmineCli}"
+FORMULA_PATH="Formula/${FORMULA_NAME}.rb"
+
+version_number="${VERSION#v}"
+
+archive_name() {
+  local goos="$1"
+  local goarch="$2"
+  case "${goos}" in
+    windows)
+      printf 'redmine_%s_%s_%s.zip' "${VERSION}" "${goos}" "${goarch}"
+      ;;
+    *)
+      printf 'redmine_%s_%s_%s.tar.gz' "${VERSION}" "${goos}" "${goarch}"
+      ;;
+  esac
+}
+
+archive_sha() {
+  local archive="$1"
+  awk -v archive="${archive}" '$2 == archive { print $1 }' "${DIST_DIR}/checksums.txt"
+}
+
+download_url() {
+  local archive="$1"
+  printf 'https://github.com/%s/releases/download/%s/%s' "${REPOSITORY}" "${VERSION}" "${archive}"
+}
+
+required_archive_sha() {
+  local archive="$1"
+  local sha
+  sha="$(archive_sha "${archive}")"
+  if [[ -z "${sha}" ]]; then
+    echo "missing checksum for ${archive}" >&2
+    exit 1
+  fi
+  printf '%s' "${sha}"
+}
+
+darwin_amd64_archive="$(archive_name darwin amd64)"
+darwin_arm64_archive="$(archive_name darwin arm64)"
+linux_amd64_archive="$(archive_name linux amd64)"
+linux_arm64_archive="$(archive_name linux arm64)"
+
+darwin_amd64_sha="$(required_archive_sha "${darwin_amd64_archive}")"
+darwin_arm64_sha="$(required_archive_sha "${darwin_arm64_archive}")"
+linux_amd64_sha="$(required_archive_sha "${linux_amd64_archive}")"
+linux_arm64_sha="$(required_archive_sha "${linux_arm64_archive}")"
+
+tap_dir="${HOMEBREW_TAP_DIR:-}"
+if [[ -z "${tap_dir}" ]]; then
+  if [[ -z "${GH_TOKEN:-}" ]]; then
+    echo "GH_TOKEN with write access to ${TAP_REPOSITORY} is required" >&2
+    exit 1
+  fi
+  tap_dir="$(mktemp -d)"
+  trap 'rm -rf "${tap_dir}"' EXIT
+  git clone "https://x-access-token:${GH_TOKEN}@github.com/${TAP_REPOSITORY}.git" "${tap_dir}"
+else
+  mkdir -p "${tap_dir}"
+fi
+
+mkdir -p "${tap_dir}/Formula"
+cat >"${tap_dir}/${FORMULA_PATH}" <<EOF
+class ${FORMULA_CLASS} < Formula
+  desc "Redmine CLI generated from the Redmine OpenAPI specification"
+  homepage "https://github.com/${REPOSITORY}"
+  version "${version_number}"
+  license "MIT"
+
+  on_macos do
+    on_arm do
+      url "$(download_url "${darwin_arm64_archive}")"
+      sha256 "${darwin_arm64_sha}"
+    end
+
+    on_intel do
+      url "$(download_url "${darwin_amd64_archive}")"
+      sha256 "${darwin_amd64_sha}"
+    end
+  end
+
+  on_linux do
+    on_arm do
+      url "$(download_url "${linux_arm64_archive}")"
+      sha256 "${linux_arm64_sha}"
+    end
+
+    on_intel do
+      url "$(download_url "${linux_amd64_archive}")"
+      sha256 "${linux_amd64_sha}"
+    end
+  end
+
+  def install
+    bin.install "redmine"
+  end
+
+  test do
+    assert_match version.to_s, shell_output("#{bin}/redmine --version")
+  end
+end
+EOF
+
+if [[ -n "${HOMEBREW_TAP_DIR:-}" ]]; then
+  echo "Formula written to ${tap_dir}/${FORMULA_PATH}"
+  exit 0
+fi
+
+cd "${tap_dir}"
+git config user.name "github-actions[bot]"
+git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+git add "${FORMULA_PATH}"
+if git diff --cached --quiet; then
+  echo "Homebrew formula is already current"
+  exit 0
+fi
+
+git commit -m "Update ${FORMULA_NAME} to ${VERSION}"
+git push
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 68648d0..bcec1c9 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -69,3 +69,10 @@ jobs:
           GH_TOKEN: ${{ github.token }}
           VERSION: ${{ github.ref_name }}
         run: gh release create "$VERSION" dist/* --title "$VERSION" --generate-notes
+
+      - name: Publish Homebrew formula
+        env:
+          GH_TOKEN: ${{ secrets.HOMEBREW_TAP_TOKEN }}
+          VERSION: ${{ github.ref_name }}
+          HOMEBREW_TAP_REPOSITORY: muxx/homebrew-tap
+        run: .github/scripts/update-homebrew-formula.sh
diff --git a/AGENTS.md b/AGENTS.md
index 2dd9370..cdcfbc7 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -4,19 +4,19 @@
 
 * Cover implementation changes with tests
 * Add and generate documentation when adding or changing functionality
-* At the end of implementation, run `make fix test gen-docs`
+* At the end of implementation, run `make fix gen-docs check`
 
 ## Running Individual Checks
 
 ```bash
 make build     # compile
-make lint      # golangci-lint
-make fix       # auto-fix lint issues (gofmt + goimports)
+make lint      # verify all Go files with gofmt/goimports and run go vet
+make fix       # auto-fix all Go files formatting and imports
 make test      # all unit tests
 make gen       # regenerate OpenAPI command metadata and docs
 make gen-docs  # regenerate docs
 make check     # lint, test, and generated-file checks
-make check-docs # verify generated docs are current
+make check-gen # verify generated files are current
 ```
 
 ## Documentation conventions
diff --git a/Makefile b/Makefile
index 03582ba..6ca6d5a 100644
--- a/Makefile
+++ b/Makefile
@@ -6,22 +6,23 @@ BINARY ?= redmine
 BIN_DIR ?= bin
 VERSION ?= $(shell git describe --tags --always --dirty 2>/dev/null || echo dev)
 LDFLAGS ?= -s -w -X main.version=$(VERSION)
-GOFILES := $(shell find . -name '*.go' -not -path './vendor/*')
+ALL_GOFILES := $(shell find . -name '*.go' -not -path './vendor/*')
+GOIMPORTS := $(shell if command -v goimports >/dev/null 2>&1; then command -v goimports; fi)
+GOIMPORTS_PKG ?= golang.org/x/tools/cmd/goimports@v0.44.0
 
 .DEFAULT_GOAL := help
 
-.PHONY: help download-openapi-spec build install lint fix test gen gen-docs check-docs check-gen check clean
+.PHONY: help download-openapi-spec build install lint fix test gen gen-docs check-gen check clean
 help:
 	@echo "Targets:"
 	@echo "  download-openapi-spec  Download latest Redmine OpenAPI spec to $(OPENAPI_SPEC)"
 	@echo "  build                  Compile $(BINARY)"
 	@echo "  install                Install $(BINARY)"
-	@echo "  lint                   Run golangci-lint when available, otherwise go vet"
-	@echo "  fix                    Run gofmt and goimports"
+	@echo "  lint                   Verify gofmt/goimports on all Go files and run go vet"
+	@echo "  fix                    Run gofmt and goimports on all Go files"
 	@echo "  test                   Run unit tests"
 	@echo "  gen                    Regenerate OpenAPI command metadata and docs"
 	@echo "  gen-docs               Regenerate docs/usage.md and generated metadata"
-	@echo "  check-docs             Verify docs/usage.md is current"
 	@echo "  check-gen              Verify generated files are current"
 	@echo "  check                  Run lint, tests, and generated-file checks"
 
@@ -42,19 +43,29 @@ install:
 	$(GO) install -trimpath -ldflags "$(LDFLAGS)" ./cmd/redmine
 
 lint:
-	@if command -v golangci-lint >/dev/null 2>&1; then \
-		golangci-lint run; \
+	@tmp=$$(mktemp -d); \
+	trap 'rm -rf "$$tmp"' EXIT; \
+	for file in $(ALL_GOFILES); do \
+		mkdir -p "$$tmp/$$(dirname "$$file")"; \
+		cp "$$file" "$$tmp/$$file"; \
+	done; \
+	gofmt -w $$(find "$$tmp" -name '*.go'); \
+	if [ -n "$(GOIMPORTS)" ]; then \
+		"$(GOIMPORTS)" -w $$(find "$$tmp" -name '*.go'); \
 	else \
-		echo "golangci-lint not found; running go vet"; \
-		$(GO) vet ./...; \
-	fi
+		$(GO) run $(GOIMPORTS_PKG) -w $$(find "$$tmp" -name '*.go'); \
+	fi; \
+	for file in $(ALL_GOFILES); do \
+		diff -u "$$file" "$$tmp/$$file" || exit 1; \
+	done
+	$(GO) vet ./...
 
 fix:
-	@gofmt -w $(GOFILES)
-	@if command -v goimports >/dev/null 2>&1; then \
-		goimports -w $(GOFILES); \
+	@gofmt -w $(ALL_GOFILES)
+	@if [ -n "$(GOIMPORTS)" ]; then \
+		"$(GOIMPORTS)" -w $(ALL_GOFILES); \
 	else \
-		$(GO) run golang.org/x/tools/cmd/goimports@latest -w $(GOFILES); \
+		$(GO) run $(GOIMPORTS_PKG) -w $(ALL_GOFILES); \
 	fi
 
 test:
@@ -65,12 +76,6 @@ gen:
 
 gen-docs: gen
 
-check-docs:
-	@tmp=$$(mktemp -d); \
-	trap 'rm -rf "$$tmp"' EXIT; \
-	$(GO) run ./cmd/redmine-openapi-gen -spec "$(OPENAPI_SPEC)" -out "$$tmp/generated.go" -docs "$$tmp/usage.md"; \
-	diff -u docs/usage.md "$$tmp/usage.md"
-
 check-gen:
 	@tmp=$$(mktemp -d); \
 	trap 'rm -rf "$$tmp"' EXIT; \
diff --git a/README.md b/README.md
index 4896b9a..9b1e513 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,38 @@ A Redmine CLI tool bringing Redmine to your command line.
 
 Built based on https://d-yoshi.github.io/redmine-openapi/ ([repo](https://github.com/d-yoshi/redmine-openapi)).
 
+## Install
+
+### Homebrew
+
+```bash
+brew install muxx/tap/redmine-cli
+redmine --version
+```
+
+The Homebrew formula is named `redmine-cli`; it installs the `redmine` executable.
+
+### GitHub release archive
+
+Download the archive for your OS and architecture from the [latest release](https://github.com/muxx/redmine-cli/releases/latest).
+
+Archive names use this format:
+
+```text
+redmine_<version>_<os>_<arch>.tar.gz
+redmine_<version>_windows_<arch>.zip
+```
+
+Example for macOS Apple Silicon:
+
+```bash
+VERSION=v0.2.0
+curl -LO "https://github.com/muxx/redmine-cli/releases/download/${VERSION}/redmine_${VERSION}_darwin_arm64.tar.gz"
+tar -xzf "redmine_${VERSION}_darwin_arm64.tar.gz"
+sudo install -m 0755 "redmine_${VERSION}_darwin_arm64/redmine" /usr/local/bin/redmine
+redmine --version
+```
+
 ## Usage
 
 ```bash
diff --git a/internal/redmine/client.go b/internal/redmine/client.go
index 9bf70cf..528e587 100644
--- a/internal/redmine/client.go
+++ b/internal/redmine/client.go
@@ -64,7 +64,8 @@ func NewHTTPClient(timeout time.Duration, insecure bool) *http.Client {
 	}
 	transport := http.DefaultTransport.(*http.Transport).Clone()
 	if insecure {
-		transport.TLSClientConfig = &tls.Config{InsecureSkipVerify: true} //nolint:gosec
+		// Controlled by the explicit --insecure CLI flag.
+		transport.TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
 	}
 	return &http.Client{Timeout: timeout, Transport: transport}
 }