diff --git a/auth/auth.go b/auth/auth.go
index cbd587b8..b88b72bf 100644
--- a/auth/auth.go
+++ b/auth/auth.go
@@ -19,7 +19,7 @@ const (
 )
 
 var (
-	DefaultAuth Auth = &NoopAuth{opts: NewOptions()}
+	DefaultAuth Auth = NewAuth()
 	// ErrInvalidToken is when the token provided is not valid
 	ErrInvalidToken = errors.New("invalid token provided")
 	// ErrForbidden is when a user does not have the necessary scope to access a resource
diff --git a/auth/noop.go b/auth/noop.go
index ed0f485f..87399126 100644
--- a/auth/noop.go
+++ b/auth/noop.go
@@ -4,29 +4,29 @@ import (
 	"github.com/google/uuid"
 )
 
-type NoopAuth struct {
+type noopAuth struct {
 	opts Options
 }
 
 // String returns the name of the implementation
-func (n *NoopAuth) String() string {
+func (n *noopAuth) String() string {
 	return "noop"
 }
 
 // Init the auth
-func (n *NoopAuth) Init(opts ...Option) {
+func (n *noopAuth) Init(opts ...Option) {
 	for _, o := range opts {
 		o(&n.opts)
 	}
 }
 
 // Options set for auth
-func (n *NoopAuth) Options() Options {
+func (n *noopAuth) Options() Options {
 	return n.opts
 }
 
 // Generate a new account
-func (n *NoopAuth) Generate(id string, opts ...GenerateOption) (*Account, error) {
+func (n *noopAuth) Generate(id string, opts ...GenerateOption) (*Account, error) {
 	options := NewGenerateOptions(opts...)
 
 	return &Account{
@@ -39,27 +39,27 @@ func (n *NoopAuth) Generate(id string, opts ...GenerateOption) (*Account, error)
 }
 
 // Grant access to a resource
-func (n *NoopAuth) Grant(rule *Rule) error {
+func (n *noopAuth) Grant(rule *Rule) error {
 	return nil
 }
 
 // Revoke access to a resource
-func (n *NoopAuth) Revoke(rule *Rule) error {
+func (n *noopAuth) Revoke(rule *Rule) error {
 	return nil
 }
 
 // Rules used to verify requests
-func (n *NoopAuth) Rules(opts ...RulesOption) ([]*Rule, error) {
+func (n *noopAuth) Rules(opts ...RulesOption) ([]*Rule, error) {
 	return []*Rule{}, nil
 }
 
 // Verify an account has access to a resource
-func (n *NoopAuth) Verify(acc *Account, res *Resource, opts ...VerifyOption) error {
+func (n *noopAuth) Verify(acc *Account, res *Resource, opts ...VerifyOption) error {
 	return nil
 }
 
 // Inspect a token
-func (n *NoopAuth) Inspect(token string) (*Account, error) {
+func (n *noopAuth) Inspect(token string) (*Account, error) {
 	uid, err := uuid.NewRandom()
 	if err != nil {
 		return nil, err
@@ -68,6 +68,11 @@ func (n *NoopAuth) Inspect(token string) (*Account, error) {
 }
 
 // Token generation using an account id and secret
-func (n *NoopAuth) Token(opts ...TokenOption) (*Token, error) {
+func (n *noopAuth) Token(opts ...TokenOption) (*Token, error) {
 	return &Token{}, nil
 }
+
+// NewAuth returns new noop auth
+func NewAuth(opts ...Option) Auth {
+	return &noopAuth{opts: NewOptions(opts...)}
+}
diff --git a/broker/broker.go b/broker/broker.go
index 2a68d9b8..e032f800 100644
--- a/broker/broker.go
+++ b/broker/broker.go
@@ -8,6 +8,7 @@ import (
 )
 
 var (
+	// DefaultBroker default broker
 	DefaultBroker Broker = NewBroker()
 )
 
diff --git a/broker/context.go b/broker/context.go
index 3420ad2c..893b8188 100644
--- a/broker/context.go
+++ b/broker/context.go
@@ -6,11 +6,13 @@ import (
 
 type brokerKey struct{}
 
+// FromContext returns broker from passed context
 func FromContext(ctx context.Context) (Broker, bool) {
 	c, ok := ctx.Value(brokerKey{}).(Broker)
 	return c, ok
 }
 
+// NewContext savess broker in context
 func NewContext(ctx context.Context, s Broker) context.Context {
 	return context.WithValue(ctx, brokerKey{}, s)
 }
diff --git a/broker/options.go b/broker/options.go
index 2295c23f..603f281f 100644
--- a/broker/options.go
+++ b/broker/options.go
@@ -181,7 +181,8 @@ func SubscribeErrorHandler(h Handler) SubscribeOption {
 	}
 }
 
-// Deprecated: Queue sets the subscribers sueue
+// Queue sets the subscribers queue
+// Deprecated
 func Queue(name string) SubscribeOption {
 	return func(o *SubscribeOptions) {
 		o.Group = name
diff --git a/client/context.go b/client/context.go
index 0a9d0e5c..a079ef11 100644
--- a/client/context.go
+++ b/client/context.go
@@ -6,11 +6,13 @@ import (
 
 type clientKey struct{}
 
+// FromContext get client from context
 func FromContext(ctx context.Context) (Client, bool) {
 	c, ok := ctx.Value(clientKey{}).(Client)
 	return c, ok
 }
 
+// NewContext put client in context
 func NewContext(ctx context.Context, c Client) context.Context {
 	return context.WithValue(ctx, clientKey{}, c)
 }
diff --git a/client/noop.go b/client/noop.go
index 3b78dc39..01224a2f 100644
--- a/client/noop.go
+++ b/client/noop.go
@@ -10,6 +10,7 @@ import (
 )
 
 var (
+	// DefaultCodecs will be used to encode/decode data
 	DefaultCodecs = map[string]codec.Codec{
 		//"application/json":         cjson.NewCodec,
 		//"application/json-rpc":     cjsonrpc.NewCodec,
diff --git a/client/options.go b/client/options.go
index 03450997..a84180eb 100644
--- a/client/options.go
+++ b/client/options.go
@@ -14,6 +14,7 @@ import (
 	"github.com/unistack-org/micro/v3/selector/random"
 )
 
+// Options holds client options
 type Options struct {
 	// Used to select codec
 	ContentType string
@@ -45,6 +46,7 @@ type Options struct {
 	Context context.Context
 }
 
+// NewCallOptions creates new call options struct
 func NewCallOptions(opts ...CallOption) CallOptions {
 	options := CallOptions{}
 	for _, o := range opts {
@@ -53,6 +55,7 @@ func NewCallOptions(opts ...CallOption) CallOptions {
 	return options
 }
 
+// CallOptions holds client call options
 type CallOptions struct {
 	// Address of remote hosts
 	Address []string
@@ -87,12 +90,14 @@ type CallOptions struct {
 	Context context.Context
 }
 
+// Context pass context to client
 func Context(ctx context.Context) Option {
 	return func(o *Options) {
 		o.Context = ctx
 	}
 }
 
+// NewPublishOptions create new PublishOptions struct from option
 func NewPublishOptions(opts ...PublishOption) PublishOptions {
 	options := PublishOptions{}
 	for _, o := range opts {
@@ -101,6 +106,7 @@ func NewPublishOptions(opts ...PublishOption) PublishOptions {
 	return options
 }
 
+// PublishOptions holds publish options
 type PublishOptions struct {
 	// Exchange is the routing exchange for the message
 	Exchange string
@@ -109,6 +115,7 @@ type PublishOptions struct {
 	Context context.Context
 }
 
+// NewMessageOptions creates message options struct
 func NewMessageOptions(opts ...MessageOption) MessageOptions {
 	options := MessageOptions{}
 	for _, o := range opts {
@@ -117,10 +124,12 @@ func NewMessageOptions(opts ...MessageOption) MessageOptions {
 	return options
 }
 
+// MessageOptions holds client message options
 type MessageOptions struct {
 	ContentType string
 }
 
+// NewRequestOptions creates new RequestOptions struct
 func NewRequestOptions(opts ...RequestOption) RequestOptions {
 	options := RequestOptions{}
 	for _, o := range opts {
@@ -129,6 +138,7 @@ func NewRequestOptions(opts ...RequestOption) RequestOptions {
 	return options
 }
 
+// RequestOptions holds client request options
 type RequestOptions struct {
 	ContentType string
 	Stream      bool
@@ -138,6 +148,7 @@ type RequestOptions struct {
 	Context context.Context
 }
 
+// NewOptions creates new options struct
 func NewOptions(opts ...Option) Options {
 	options := Options{
 		Context:     context.Background(),
@@ -172,6 +183,7 @@ func Broker(b broker.Broker) Option {
 	}
 }
 
+// Logger to be used for log mesages
 func Logger(l logger.Logger) Option {
 	return func(o *Options) {
 		o.Logger = l
@@ -272,7 +284,7 @@ func Lookup(l LookupFunc) Option {
 	}
 }
 
-// Number of retries when making the request.
+// Retries sets the retry count when making the request.
 // Should this be a Call Option?
 func Retries(i int) Option {
 	return func(o *Options) {
@@ -287,7 +299,7 @@ func Retry(fn RetryFunc) Option {
 	}
 }
 
-// The request timeout.
+// RequestTimeout is the request timeout.
 // Should this be a Call Option?
 func RequestTimeout(d time.Duration) Option {
 	return func(o *Options) {
@@ -422,6 +434,7 @@ func WithSelectOptions(sops ...selector.SelectOption) CallOption {
 	}
 }
 
+// WithMessageContentType sets the message content type
 func WithMessageContentType(ct string) MessageOption {
 	return func(o *MessageOptions) {
 		o.ContentType = ct
@@ -430,12 +443,14 @@ func WithMessageContentType(ct string) MessageOption {
 
 // Request Options
 
+// WithContentType specifies request content type
 func WithContentType(ct string) RequestOption {
 	return func(o *RequestOptions) {
 		o.ContentType = ct
 	}
 }
 
+// StreamingRequest specifies that request is streaming
 func StreamingRequest() RequestOption {
 	return func(o *RequestOptions) {
 		o.Stream = true
diff --git a/codec/codec.go b/codec/codec.go
index fa5c98e9..09caf920 100644
--- a/codec/codec.go
+++ b/codec/codec.go
@@ -9,6 +9,7 @@ import (
 )
 
 const (
+	// Message types
 	Error MessageType = iota
 	Request
 	Response
@@ -23,6 +24,7 @@ var (
 )
 
 var (
+	// DefaultMaxMsgSize specifies how much data codec can handle
 	DefaultMaxMsgSize = 1024 * 1024 * 4 // 4Mb
 )
 
@@ -59,18 +61,22 @@ type Message struct {
 	Body   []byte
 }
 
+// Option func
 type Option func(*Options)
 
+// Options contains codec options
 type Options struct {
 	MaxMsgSize int64
 }
 
+// MaxMsgSize sets the max message size
 func MaxMsgSize(n int64) Option {
 	return func(o *Options) {
 		o.MaxMsgSize = n
 	}
 }
 
+// NewMessage creates new codec message
 func NewMessage(t MessageType) *Message {
 	return &Message{Type: t, Header: metadata.New(0)}
 }
diff --git a/codec/noop.go b/codec/noop.go
index 9a0e6849..c232c087 100644
--- a/codec/noop.go
+++ b/codec/noop.go
@@ -74,11 +74,12 @@ func (c *noopCodec) String() string {
 	return "noop"
 }
 
+// NewCodec returns new noop codec
 func NewCodec() Codec {
 	return &noopCodec{}
 }
 
-func (n *noopCodec) Marshal(v interface{}) ([]byte, error) {
+func (c *noopCodec) Marshal(v interface{}) ([]byte, error) {
 	if v == nil {
 		return nil, nil
 	}
@@ -100,7 +101,7 @@ func (n *noopCodec) Marshal(v interface{}) ([]byte, error) {
 	return nil, ErrInvalidMessage
 }
 
-func (n *noopCodec) Unmarshal(d []byte, v interface{}) error {
+func (c *noopCodec) Unmarshal(d []byte, v interface{}) error {
 	if v == nil {
 		return nil
 	}
diff --git a/config/config.go b/config/config.go
index 9531c875..2337b847 100644
--- a/config/config.go
+++ b/config/config.go
@@ -7,6 +7,7 @@ import (
 )
 
 var (
+	// DefaultConfig default config
 	DefaultConfig Config = NewConfig()
 )
 
diff --git a/errors/errors.go b/errors/errors.go
index 971c3f87..95b65544 100644
--- a/errors/errors.go
+++ b/errors/errors.go
@@ -9,18 +9,30 @@ import (
 )
 
 var (
-	ErrBadRequest          = &Error{Code: 400}
-	ErrUnauthorized        = &Error{Code: 401}
-	ErrForbidden           = &Error{Code: 403}
-	ErrNotFound            = &Error{Code: 404}
-	ErrMethodNotAllowed    = &Error{Code: 405}
-	ErrTimeout             = &Error{Code: 408}
-	ErrConflict            = &Error{Code: 409}
+	// ErrBadRequest
+	ErrBadRequest = &Error{Code: 400}
+	// ErrUnauthorized
+	ErrUnauthorized = &Error{Code: 401}
+	// ErrForbidden
+	ErrForbidden = &Error{Code: 403}
+	// ErrNotFound
+	ErrNotFound = &Error{Code: 404}
+	// ErrMethodNotAllowed
+	ErrMethodNotAllowed = &Error{Code: 405}
+	// ErrTimeout
+	ErrTimeout = &Error{Code: 408}
+	// ErrConflict
+	ErrConflict = &Error{Code: 409}
+	// ErrInternalServerError
 	ErrInternalServerError = &Error{Code: 500}
-	ErNotImplemented       = &Error{Code: 501}
-	ErrBadGateway          = &Error{Code: 502}
-	ErrServiceUnavailable  = &Error{Code: 503}
-	ErrGatewayTimeout      = &Error{Code: 504}
+	// ErNotImplemented
+	ErNotImplemented = &Error{Code: 501}
+	// ErrBadGateway
+	ErrBadGateway = &Error{Code: 502}
+	// ErrServiceUnavailable
+	ErrServiceUnavailable = &Error{Code: 503}
+	// ErrGatewayTimeout
+	ErrGatewayTimeout = &Error{Code: 504}
 )
 
 // Error tpye
diff --git a/go.mod b/go.mod
index d5c9bd1c..091ca8f4 100644
--- a/go.mod
+++ b/go.mod
@@ -9,12 +9,16 @@ require (
 	github.com/go-acme/lego/v3 v3.4.0
 	github.com/golang/protobuf v1.4.3
 	github.com/google/uuid v1.1.2
-	github.com/micro/cli/v2 v2.1.2
+	github.com/kr/text v0.2.0 // indirect
 	github.com/miekg/dns v1.1.31
+	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
 	github.com/oxtoacart/bpool v0.0.0-20190530202638-03653db5a59c
 	github.com/stretchr/testify v1.5.1
-	github.com/unistack-org/micro-config-cmd v0.0.0-20201028144621-5a55f1aad70a
 	golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a
 	golang.org/x/net v0.0.0-20200904194848-62affa334b73
+	golang.org/x/sys v0.0.0-20200615200032-f1bc736245b1 // indirect
 	google.golang.org/protobuf v1.25.0
+	gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f // indirect
+	gopkg.in/square/go-jose.v2 v2.4.1 // indirect
+	gopkg.in/yaml.v2 v2.3.0 // indirect
 )
diff --git a/go.sum b/go.sum
index f5bec3b4..61bb68a6 100644
--- a/go.sum
+++ b/go.sum
@@ -42,7 +42,6 @@ github.com/baiyubin/aliyun-sts-go-sdk v0.0.0-20180326062324-cfa1a18b161f/go.mod
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
-github.com/bradfitz/gomemcache v0.0.0-20190913173617-a41fca850d0b/go.mod h1:H0wQNHz2YrLsuXOZozoeDmnHXkNCRmMW0gwFWDfEZDA=
 github.com/caddyserver/certmagic v0.10.6 h1:sCya6FmfaN74oZE46kqfaFOVoROD/mF36rTQfjN7TZc=
 github.com/caddyserver/certmagic v0.10.6/go.mod h1:Y8jcUBctgk/IhpAzlHKfimZNyXCkfGgRTC0orl8gROQ=
 github.com/cenkalti/backoff/v4 v4.0.0 h1:6VeaLF9aI+MAUQ95106HwWzYZgJJpZ4stumjj6RFYAU=
@@ -53,8 +52,6 @@ github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDk
 github.com/cloudflare/cloudflare-go v0.10.2/go.mod h1:qhVI5MKwBGhdNU89ZRz2plgYutcJ5PCekLxXn56w6SY=
 github.com/cpu/goacmedns v0.0.1/go.mod h1:sesf/pNnCYwUevQEQfEwY0Y3DydlQWSGZbaMElOWxok=
 github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
-github.com/cpuguy83/go-md2man/v2 v2.0.0 h1:EoUDS0afbrsXAZ9YQ9jdu/mZ2sXgT1/2yyNng4PGlyM=
-github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
@@ -71,9 +68,6 @@ github.com/ef-ds/deque v1.0.4-0.20190904040645-54cb57c252a1 h1:jFGzikHboUMRXmMBt
 github.com/ef-ds/deque v1.0.4-0.20190904040645-54cb57c252a1/go.mod h1:HvODWzv6Y6kBf3Ah2WzN1bHjDUezGLaAhwuWVwfpEJs=
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
-github.com/evanphx/json-patch/v5 v5.0.0/go.mod h1:G79N1coSVB93tBe7j6PhzjmR3/2VvlbKOFpnXhI9Bw4=
-github.com/evanphx/json-patch/v5 v5.1.0 h1:B0aXl1o/1cP8NbviYiBMkcHBtUjIJ1/Ccg6b+SwCLQg=
-github.com/evanphx/json-patch/v5 v5.1.0/go.mod h1:G79N1coSVB93tBe7j6PhzjmR3/2VvlbKOFpnXhI9Bw4=
 github.com/exoscale/egoscale v0.18.1/go.mod h1:Z7OOdzzTOz1Q1PjQXumlz9Wn/CddH0zSYdCF3rnBKXE=
 github.com/fatih/structs v1.1.0/go.mod h1:9NiDSp5zOcgEDl+j00MP/WkGVPOlPRLejGD8Ga6PJ7M=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
@@ -89,12 +83,6 @@ github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
-github.com/gobwas/httphead v0.0.0-20180130184737-2c6c146eadee h1:s+21KNqlpePfkah2I+gwHF8xmJWRjooY+5248k6m4A0=
-github.com/gobwas/httphead v0.0.0-20180130184737-2c6c146eadee/go.mod h1:L0fX3K22YWvt/FAX9NnzrNzcI4wNYi9Yku4O0LKYflo=
-github.com/gobwas/pool v0.2.1 h1:xfeeEhW7pwmX8nuLVlqbzVc7udMDrwetjEv+TZIz1og=
-github.com/gobwas/pool v0.2.1/go.mod h1:q8bcK0KcYlCgd9e7WYLm9LpyS+YeLd8JVDW6WezmKEw=
-github.com/gobwas/ws v1.0.3 h1:ZOigqf7iBxkA4jdQ3am7ATzdlOFp9YzA6NmuvEEZc9g=
-github.com/gobwas/ws v1.0.3/go.mod h1:szmBTxLgaFppYjEmNtny/v3w89xOydFnnZMcgRRu/EM=
 github.com/gofrs/uuid v3.2.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
 github.com/gogo/protobuf v1.2.0/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
@@ -112,7 +100,6 @@ github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrU
 github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w=
 github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
 github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8=
-github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
 github.com/golang/protobuf v1.4.3 h1:JjCZWpVbqXDqFVmTfYWEVTMIYrL/NPdPSCHPJ0T/raM=
 github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
 github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
@@ -145,11 +132,8 @@ github.com/h2non/parth v0.0.0-20190131123155-b4df798d6542/go.mod h1:Ow0tF8D4Kplb
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/golang-lru v0.5.3/go.mod h1:iADmTwqILo4mZ8BN3D2Q6+9jd8WM5uGBxy+E8yxSoD4=
-github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
-github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
 github.com/iij/doapi v0.0.0-20190504054126-0bbf12d6d7df/go.mod h1:QMZY7/J/KSQEhKWFeDesPjMj+wCHReeknARU3wqlyN4=
-github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
 github.com/jmespath/go-jmespath v0.0.0-20180206201540-c2b33e8439af/go.mod h1:Nht3zPeWKUH0NzdCt2Blrr5ys8VGpn0CEB0cQHVjt7k=
 github.com/json-iterator/go v1.1.5/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
 github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
@@ -165,7 +149,6 @@ github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxv
 github.com/konsorten/go-windows-terminal-sequences v1.0.2/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFBFZlji/RkVcI2GknAs/DXo4wKdlNEc=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
-github.com/kr/pretty v0.2.0/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
@@ -179,10 +162,7 @@ github.com/mattn/go-runewidth v0.0.2/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzp
 github.com/mattn/go-runewidth v0.0.4/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzpuz5H//U1FU=
 github.com/mattn/go-tty v0.0.0-20180219170247-931426f7535a/go.mod h1:XPvLUNfbS4fJH25nqRHfWLMa1ONC8Amw+mIA639KxkE=
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
-github.com/micro/cli/v2 v2.1.2 h1:43J1lChg/rZCC1rvdqZNFSQDrGT7qfMrtp6/ztpIkEM=
-github.com/micro/cli/v2 v2.1.2/go.mod h1:EguNh6DAoWKm9nmk+k/Rg0H3lQnDxqzu5x5srOtGtYg=
 github.com/miekg/dns v1.1.15/go.mod h1:W1PPwlIAgtquWBMBEV9nkV9Cazfe8ScdGz/Lj7v3Nrg=
-github.com/miekg/dns v1.1.27/go.mod h1:KNUDUusw/aVsxyTYZM1oqvCicbwhgbNgztCETuNZ7xM=
 github.com/miekg/dns v1.1.31 h1:sJFOl9BgwbYAWOGEwr61FU28pqsBNdpRBnhGXtO06Oo=
 github.com/miekg/dns v1.1.31/go.mod h1:KNUDUusw/aVsxyTYZM1oqvCicbwhgbNgztCETuNZ7xM=
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
@@ -210,12 +190,9 @@ github.com/oracle/oci-go-sdk v7.0.0+incompatible/go.mod h1:VQb79nF8Z2cwLkLS35ukw
 github.com/ovh/go-ovh v0.0.0-20181109152953-ba5adb4cf014/go.mod h1:joRatxRJaZBsY3JAOEMcoOp05CnZzsx4scTxi95DHyQ=
 github.com/oxtoacart/bpool v0.0.0-20190530202638-03653db5a59c h1:rp5dCmg/yLR3mgFuSOe4oEnDDmGLROTvMragMUXpTQw=
 github.com/oxtoacart/bpool v0.0.0-20190530202638-03653db5a59c/go.mod h1:X07ZCGwUbLaax7L0S3Tw4hpejzu63ZrrQiUe6W0hcy0=
-github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTKqZju1ZixQ/KpMGzzAfe6+WQ=
 github.com/pierrec/lz4 v2.0.5+incompatible/go.mod h1:pdkljMzZIN41W+lC3N2tnIh5sFi+IEE17M5jbnwPHcY=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
-github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
-github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
@@ -258,17 +235,6 @@ github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5
 github.com/timewasted/linode v0.0.0-20160829202747-37e84520dcf7/go.mod h1:imsgLplxEC/etjIhdr3dNzV3JeT27LbVu5pYWm0JCBY=
 github.com/transip/gotransip v0.0.0-20190812104329-6d8d9179b66f/go.mod h1:i0f4R4o2HM0m3DZYQWsj6/MEowD57VzoH0v3d7igeFY=
 github.com/uber-go/atomic v1.3.2/go.mod h1:/Ct5t2lcmbJ4OSe/waGBoaVvVqtO0bmtfVNex1PFV8g=
-github.com/unistack-org/micro-codec-bytes v0.0.0-20200828083432-4e49e953d844 h1:5b1yuSllbsMm/9fUIlIXSr8DbsKT/sAKSCgOx6+SAfI=
-github.com/unistack-org/micro-codec-bytes v0.0.0-20200828083432-4e49e953d844/go.mod h1:g5sOI8TWgGZiVHe8zoUPdtz7+0oLnqTnfBoai6Qb7jE=
-github.com/unistack-org/micro-config-cmd v0.0.0-20200909210346-ec89783dc46c/go.mod h1:6pm1cadbwsFcEW1ZbV5Fp0i3goR3TNfROMNSPih3I8k=
-github.com/unistack-org/micro-config-cmd v0.0.0-20200909210755-6e7e85eeab34/go.mod h1:fT1gYn+TtfVZZ5tNx56bZIncJjmlji66g7GKdWua5hE=
-github.com/unistack-org/micro-config-cmd v0.0.0-20200920140133-0853deb2e5dc/go.mod h1:il8nz4ZEcX3Usyfrtwy+YtQcb7xSUSFJdSe8PBJ9gOA=
-github.com/unistack-org/micro-config-cmd v0.0.0-20201028144621-5a55f1aad70a h1:VjlqP1qZkjC0Chmx5MKFPIbtSCigeICFDf8vaLZGh9o=
-github.com/unistack-org/micro-config-cmd v0.0.0-20201028144621-5a55f1aad70a/go.mod h1:MzMg+qh1wORZwYtg5AVgFkNFrXVVbdPKW7s/Is+A994=
-github.com/unistack-org/micro/v3 v3.0.0-20200827083227-aa99378adc6e/go.mod h1:rPQbnry3nboAnMczj8B1Gzlcyv/HYoMZLgd3/3nttJ4=
-github.com/unistack-org/micro/v3 v3.0.0-gamma.0.20200909210629-caec730248b1/go.mod h1:mmqHR9WelHUXqg2mELjsQ+FJHcWs6mNmXg+wEYO2T3c=
-github.com/unistack-org/micro/v3 v3.0.0-gamma.0.20200920135754-1cbd1d2bad83/go.mod h1:HUzMG4Mcy97958VxWTg8zuazZgwQ/aoLZ8wtBVONwRE=
-github.com/unistack-org/micro/v3 v3.0.0-gamma.0.20200922103357-4c4fa00a5d94/go.mod h1:aL+8VhSXpx0SuEeXPOWUo5BgS7kyvWYobeXFay90UUM=
 github.com/urfave/cli v1.22.1/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
 github.com/vultr/govultr v0.1.4/go.mod h1:9H008Uxr/C4vFNGLqKx232C206GL0PBHzOP0809bGNA=
 github.com/xeipuuv/gojsonpointer v0.0.0-20180127040702-4e3ac2762d5f/go.mod h1:N2zxlSyiKSe5eX1tZViRH5QA0qijqEDrYZiPEAiq3wU=
@@ -290,7 +256,6 @@ golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200302210943-78000ba7a073/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/crypto v0.0.0-20200709230013-948cd5f35899/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a h1:vclmkQCjlDX5OydZ9wv8rBCcS0QyQY66Mpf/7BZbInM=
 golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
@@ -332,7 +297,6 @@ golang.org/x/net v0.0.0-20190724013045-ca1201d0de80/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190930134127-c5a3c61f89f3/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20191027093000-83d349e8ac1a/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20200707034311-ab3426394381/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/net v0.0.0-20200904194848-62affa334b73 h1:MXfv8rhZWmFeqX3GNZRsd6vOLoaCHjYEX3qkRo3YBUA=
 golang.org/x/net v0.0.0-20200904194848-62affa334b73/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
@@ -419,8 +383,6 @@ google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98
 google.golang.org/genproto v0.0.0-20190911173649-1774047e7e51/go.mod h1:IbNlFCBrqXvoKpeg0TB2l7cyZUmoaFKYIwrEpbDKLA8=
 google.golang.org/genproto v0.0.0-20191216164720-4f79533eabd1/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc=
 google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
-google.golang.org/genproto v0.0.0-20200904004341-0bd0a958aa1d h1:92D1fum1bJLKSdr11OJ+54YeCMCGYIygTA7R/YZxH5M=
-google.golang.org/genproto v0.0.0-20200904004341-0bd0a958aa1d/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.19.1/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
@@ -436,13 +398,11 @@ google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzi
 google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
-google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4=
 google.golang.org/protobuf v1.25.0 h1:Ejskq+SyPohKW+1uil0JJMtmHCgJPJ/qWTxr8qp+R4c=
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU=
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
diff --git a/logger/level.go b/logger/level.go
index 6f07e2ff..37bb9c0a 100644
--- a/logger/level.go
+++ b/logger/level.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 )
 
+// Level means logger level
 type Level int8
 
 const (
@@ -22,6 +23,7 @@ const (
 	FatalLevel
 )
 
+// String returns logger level string representation
 func (l Level) String() string {
 	switch l {
 	case TraceLevel:
diff --git a/logger/logger.go b/logger/logger.go
index 8e808653..6dcf8ef5 100644
--- a/logger/logger.go
+++ b/logger/logger.go
@@ -44,54 +44,67 @@ type Logger interface {
 	String() string
 }
 
+// Info writes msg to default logger on info level
 func Info(args ...interface{}) {
 	DefaultLogger.Info(args...)
 }
 
+// Error writes msg to default logger on error level
 func Error(args ...interface{}) {
 	DefaultLogger.Error(args...)
 }
 
+// Debug writes msg to default logger on debug level
 func Debug(args ...interface{}) {
 	DefaultLogger.Debug(args...)
 }
 
+// Warn writes msg to default logger on warn level
 func Warn(args ...interface{}) {
 	DefaultLogger.Warn(args...)
 }
 
+// Trace writes msg to default logger on trace level
 func Trace(args ...interface{}) {
 	DefaultLogger.Trace(args...)
 }
 
+// Fatal writes msg to default logger on fatal level
 func Fatal(args ...interface{}) {
 	DefaultLogger.Fatal(args...)
 }
 
+// Infof writes formatted msg to default logger on info level
 func Infof(msg string, args ...interface{}) {
 	DefaultLogger.Infof(msg, args...)
 }
 
+// Errorf writes formatted msg to default logger on error level
 func Errorf(msg string, args ...interface{}) {
 	DefaultLogger.Errorf(msg, args...)
 }
 
+// Debugf writes formatted msg to default logger on debug level
 func Debugf(msg string, args ...interface{}) {
 	DefaultLogger.Debugf(msg, args...)
 }
 
+// Warnf writes formatted msg to default logger on warn level
 func Warnf(msg string, args ...interface{}) {
 	DefaultLogger.Warnf(msg, args...)
 }
 
+// Tracef writes formatted msg to default logger on trace level
 func Tracef(msg string, args ...interface{}) {
 	DefaultLogger.Tracef(msg, args...)
 }
 
+// Fatalf writes formatted msg to default logger on fatal level
 func Fatalf(msg string, args ...interface{}) {
 	DefaultLogger.Fatalf(msg, args...)
 }
 
+// V returns true if passed level enabled in default logger
 func V(level Level) bool {
 	return DefaultLogger.V(level)
 }
diff --git a/logger/options.go b/logger/options.go
index 0bfd2a42..73d43554 100644
--- a/logger/options.go
+++ b/logger/options.go
@@ -6,8 +6,10 @@ import (
 	"os"
 )
 
+// Option func
 type Option func(*Options)
 
+// Options holds logger options
 type Options struct {
 	// The logging level the logger should log at. default is `InfoLevel`
 	Level Level
@@ -21,6 +23,7 @@ type Options struct {
 	Context context.Context
 }
 
+// NewOptions creates new options struct
 func NewOptions(opts ...Option) Options {
 	options := Options{
 		Level:           InfoLevel,
diff --git a/metadata/metadata.go b/metadata/metadata.go
index b2216217..1b467247 100644
--- a/metadata/metadata.go
+++ b/metadata/metadata.go
@@ -54,6 +54,7 @@ func Copy(md Metadata) Metadata {
 	return nmd
 }
 
+// Del deletes key from metadata
 func Del(ctx context.Context, key string) context.Context {
 	md, ok := FromContext(ctx)
 	if !ok {
diff --git a/network/transport/context.go b/network/transport/context.go
index eace44a4..86649f81 100644
--- a/network/transport/context.go
+++ b/network/transport/context.go
@@ -6,11 +6,13 @@ import (
 
 type transportKey struct{}
 
+// FromContext get transport from context
 func FromContext(ctx context.Context) (Transport, bool) {
 	c, ok := ctx.Value(transportKey{}).(Transport)
 	return c, ok
 }
 
+// NewContext put transport in context
 func NewContext(ctx context.Context, c Transport) context.Context {
 	return context.WithValue(ctx, transportKey{}, c)
 }
diff --git a/network/transport/noop.go b/network/transport/noop.go
index 646c42e2..e5fac7b4 100644
--- a/network/transport/noop.go
+++ b/network/transport/noop.go
@@ -6,6 +6,7 @@ type noopTransport struct {
 	opts Options
 }
 
+// NewTransport creates new noop transport
 func NewTransport(opts ...Option) Transport {
 	return &noopTransport{opts: NewOptions(opts...)}
 }
diff --git a/registry/context.go b/registry/context.go
index ee7c4ec1..9ad7c8a6 100644
--- a/registry/context.go
+++ b/registry/context.go
@@ -6,11 +6,13 @@ import (
 
 type registryKey struct{}
 
+// FromContext get registry from context
 func FromContext(ctx context.Context) (Registry, bool) {
 	c, ok := ctx.Value(registryKey{}).(Registry)
 	return c, ok
 }
 
+// NewContext put registry in context
 func NewContext(ctx context.Context, c Registry) context.Context {
 	return context.WithValue(ctx, registryKey{}, c)
 }
diff --git a/registry/registry.go b/registry/registry.go
index 70dc4e49..25b9fcea 100644
--- a/registry/registry.go
+++ b/registry/registry.go
@@ -24,7 +24,7 @@ var (
 	ErrWatcherStopped = errors.New("watcher stopped")
 )
 
-// The registry provides an interface for service discovery
+// Registry provides an interface for service discovery
 // and an abstraction over varying implementations
 // {consul, etcd, zookeeper, ...}
 type Registry interface {
@@ -64,7 +64,7 @@ type Endpoint struct {
 	Metadata metadata.Metadata `json:"metadata"`
 }
 
-// Valud holds additional kv stuff
+// Value holds additional kv stuff
 type Value struct {
 	Name   string   `json:"name"`
 	Type   string   `json:"type"`
diff --git a/server/noop.go b/server/noop.go
index 1279b11b..1721f5e5 100644
--- a/server/noop.go
+++ b/server/noop.go
@@ -17,6 +17,7 @@ import (
 )
 
 var (
+	// DefaultCodecs will be used to encode/decode
 	DefaultCodecs = map[string]codec.Codec{
 		//"application/json":         cjson.NewCodec,
 		//"application/json-rpc":     cjsonrpc.NewCodec,
diff --git a/server/options.go b/server/options.go
index fb4a31e1..0690d634 100644
--- a/server/options.go
+++ b/server/options.go
@@ -16,6 +16,7 @@ import (
 	"github.com/unistack-org/micro/v3/tracer"
 )
 
+// Option func
 type Option func(*Options)
 
 // Options server struct
diff --git a/server/server.go b/server/server.go
index 9badf18e..f4e97973 100644
--- a/server/server.go
+++ b/server/server.go
@@ -12,21 +12,33 @@ import (
 )
 
 var (
+	// DefaultServer default server
 	DefaultServer Server = NewServer()
 )
 
 var (
-	DefaultAddress          = ":0"
-	DefaultName             = "server"
-	DefaultVersion          = "latest"
-	DefaultId               = uuid.New().String()
-	DefaultRegisterCheck    = func(context.Context) error { return nil }
+	// DefaultAddress will be used if no address passed
+	DefaultAddress = ":0"
+	// DefaultName will be used if no name passed
+	DefaultName = "server"
+	// DefaultVersion will be used if no version passed
+	DefaultVersion = "latest"
+	// DefaultId will be used if no id passed
+	DefaultId = uuid.New().String()
+	// DefaultRegisterCheck holds func that run before register server
+	DefaultRegisterCheck = func(context.Context) error { return nil }
+	// DefaultRegisterInterval holds interval for register
 	DefaultRegisterInterval = time.Second * 30
-	DefaultRegisterTTL      = time.Second * 90
-	DefaultNamespace        = "micro"
-	DefaultMaxMsgSize       = 1024 * 1024 * 4 // 4Mb
-	DefaultMaxMsgRecvSize   = 1024 * 1024 * 4 // 4Mb
-	DefaultMaxMsgSendSize   = 1024 * 1024 * 4 // 4Mb
+	// DefaultRegisterTTL holds registry record ttl, must be multiple of DefaultRegisterInterval
+	DefaultRegisterTTL = time.Second * 90
+	// DefaultNamespace will be used if no namespace passed
+	DefaultNamespace = "micro"
+	// DefaultMaxMsgSize holds default max msg ssize
+	DefaultMaxMsgSize = 1024 * 1024 * 4 // 4Mb
+	// DefaultMaxMsgRecvSize holds default max recv size
+	DefaultMaxMsgRecvSize = 1024 * 1024 * 4 // 4Mb
+	// DefaultMaxMsgSendSize holds default max send size
+	DefaultMaxMsgSendSize = 1024 * 1024 * 4 // 4Mb
 )
 
 // Server is a simple micro server abstraction
diff --git a/store/context.go b/store/context.go
index 10d495ce..f0bdcb98 100644
--- a/store/context.go
+++ b/store/context.go
@@ -6,11 +6,13 @@ import (
 
 type storeKey struct{}
 
-func storeContext(ctx context.Context) (Store, bool) {
+// FromContext get store from context
+func FromContext(ctx context.Context) (Store, bool) {
 	c, ok := ctx.Value(storeKey{}).(Store)
 	return c, ok
 }
 
+// NewContext put store in context
 func NewContext(ctx context.Context, c Store) context.Context {
 	return context.WithValue(ctx, storeKey{}, c)
 }
diff --git a/store/options.go b/store/options.go
index 27d8b645..92f8a91c 100644
--- a/store/options.go
+++ b/store/options.go
@@ -23,6 +23,7 @@ type Options struct {
 	Context context.Context
 }
 
+// NewOptions creates options struct
 func NewOptions(opts ...Option) Options {
 	options := Options{
 		Logger:  logger.DefaultLogger,
@@ -37,6 +38,7 @@ func NewOptions(opts ...Option) Options {
 // Option sets values in Options
 type Option func(o *Options)
 
+// Context pass context to store
 func Context(ctx context.Context) Option {
 	return func(o *Options) {
 		o.Context = ctx
diff --git a/tracer/context.go b/tracer/context.go
index 8bbaab66..271a6653 100644
--- a/tracer/context.go
+++ b/tracer/context.go
@@ -1,4 +1,4 @@
-// Package trace provides an interface for distributed tracing
+// Package tracer provides an interface for distributed tracing
 package tracer
 
 import (
diff --git a/tracer/options.go b/tracer/options.go
index 88f51d0b..33e90fd1 100644
--- a/tracer/options.go
+++ b/tracer/options.go
@@ -23,7 +23,7 @@ type ReadOptions struct {
 // ReadOption func
 type ReadOption func(o *ReadOptions)
 
-// ReadTracer read the given trace
+// ReadTrace read the given trace
 func ReadTrace(t string) ReadOption {
 	return func(o *ReadOptions) {
 		o.Trace = t