diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
deleted file mode 100644
index d82cbec6..00000000
--- a/.github/workflows/release.yaml
+++ /dev/null
@@ -1,25 +0,0 @@
-on:
-  release:
-    types: [created]
-
-jobs:
-  releases-matrix:
-    name: Release goctl binary
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        # build and publish in parallel: linux/386, linux/amd64, linux/arm64,
-        # windows/386, windows/amd64, windows/arm64, darwin/amd64, darwin/arm64
-        goos: [linux, windows, darwin]
-        goarch: [amd64, arm64]
-    steps:
-      - uses: actions/checkout@v2
-      - uses: wangyoucao577/go-release-action@v1.22
-        with:
-          github_token: ${{ secrets.GITHUB_TOKEN }}
-          goos: ${{ matrix.goos }}
-          goarch: ${{ matrix.goarch }}
-          goversion: "https://dl.google.com/go/go1.17.5.linux-amd64.tar.gz"
-          project_path: "tools/goctl"
-          binary_name: "goctl"
-          extra_files: tools/goctl/goctl.md
diff --git a/core/discov/accountregistry.go b/core/discov/accountregistry.go
index 5e8481ee..bbb1d4a9 100644
--- a/core/discov/accountregistry.go
+++ b/core/discov/accountregistry.go
@@ -2,6 +2,7 @@ package discov
 
 import "github.com/tal-tech/go-zero/core/discov/internal"
 
+// RegisterAccount registers the username/password to the given etcd cluster.
 func RegisterAccount(endpoints []string, user, pass string) {
 	internal.AddAccount(endpoints, user, pass)
 }
diff --git a/core/discov/internal/accountmanager.go b/core/discov/internal/accountmanager.go
index f0791292..4b84c9de 100644
--- a/core/discov/internal/accountmanager.go
+++ b/core/discov/internal/accountmanager.go
@@ -2,16 +2,18 @@ package internal
 
 import "sync"
 
-type Account struct {
-	User string
-	Pass string
-}
-
 var (
 	accounts = make(map[string]Account)
 	lock     sync.RWMutex
 )
 
+// Account holds the username/password for an etcd cluster.
+type Account struct {
+	User string
+	Pass string
+}
+
+// AddAccount adds the username/password for the given etcd cluster.
 func AddAccount(endpoints []string, user, pass string) {
 	lock.Lock()
 	defer lock.Unlock()
@@ -22,6 +24,7 @@ func AddAccount(endpoints []string, user, pass string) {
 	}
 }
 
+// GetAccount gets the username/password for the given etcd cluster.
 func GetAccount(endpoints []string) (Account, bool) {
 	lock.RLock()
 	defer lock.RUnlock()
diff --git a/core/discov/subscriber.go b/core/discov/subscriber.go
index b70e76b2..7b70bb45 100644
--- a/core/discov/subscriber.go
+++ b/core/discov/subscriber.go
@@ -58,6 +58,7 @@ func Exclusive() SubOption {
 	}
 }
 
+// WithSubEtcdAccount customizes the Subscriber with given etcd username/password.
 func WithSubEtcdAccount(user, pass string) SubOption {
 	return func(sub *Subscriber) {
 		internal.AddAccount(sub.endpoints, user, pass)
diff --git a/tools/goctl/api/parser/g4/gen/api/apiparser_parser.go b/tools/goctl/api/parser/g4/gen/api/apiparser_parser.go
old mode 100755
new mode 100644
index fbb26a9a..8599337c
--- a/tools/goctl/api/parser/g4/gen/api/apiparser_parser.go
+++ b/tools/goctl/api/parser/g4/gen/api/apiparser_parser.go
@@ -1,4 +1,5 @@
-package api // ApiParser
+package api
+
 import (
 	"fmt"
 	"reflect"
diff --git a/tools/goctl/api/spec/spec.go b/tools/goctl/api/spec/spec.go
index 199e2251..1410843e 100644
--- a/tools/goctl/api/spec/spec.go
+++ b/tools/goctl/api/spec/spec.go
@@ -1,5 +1,6 @@
 package spec
 
+// RoutePrefixKey is the prefix keyword for the routes.
 const RoutePrefixKey = "prefix"
 
 type (
diff --git a/tools/goctl/model/sql/parser/parser.go b/tools/goctl/model/sql/parser/parser.go
index e220dd06..28f69a43 100644
--- a/tools/goctl/model/sql/parser/parser.go
+++ b/tools/goctl/model/sql/parser/parser.go
@@ -371,6 +371,7 @@ func getTableFields(table *model.Table) (map[string]*Field, error) {
 	return fieldM, nil
 }
 
+// GetSafeTables escapes the golang keywords from sql tables.
 func GetSafeTables(tables []*parser.Table) []*parser.Table {
 	var list []*parser.Table
 	for _, t := range tables {
@@ -381,6 +382,7 @@ func GetSafeTables(tables []*parser.Table) []*parser.Table {
 	return list
 }
 
+// GetSafeTable escapes the golang keywords from sql table.
 func GetSafeTable(table *parser.Table) *parser.Table {
 	table.Name = su.EscapeGolangKeyword(table.Name)
 	for _, c := range table.Columns {
diff --git a/tools/goctl/util/string.go b/tools/goctl/util/string.go
index 0aa93845..8422e4e4 100644
--- a/tools/goctl/util/string.go
+++ b/tools/goctl/util/string.go
@@ -96,6 +96,7 @@ func isNumber(r rune) bool {
 	return '0' <= r && r <= '9'
 }
 
+// EscapeGolangKeyword escapes the golang keywords.
 func EscapeGolangKeyword(s string) string {
 	if !isGolangKeyword(s) {
 		return s