diff --git a/framework/context.go b/framework/context.go
index 8991be3..c702404 100644
--- a/framework/context.go
+++ b/framework/context.go
@@ -6,8 +6,6 @@ import (
 	"errors"
 	"io"
 	"net/http"
-	"net/url"
-	"strconv"
 	"sync"
 	"time"
 )
@@ -24,6 +22,8 @@ type Context struct {
 	// current handler index
 	index int
 
+	params map[string]any
+
 	hasTimeout bool
 	writerMux  *sync.Mutex
 }
@@ -123,128 +123,6 @@ func (ctx *Context) SetHandlers(handlers []ControllerHandler) {
 // }}}
 // {{{ Implements request functions
 
-// {{{ Request URI
-
-// QueryInt gets an int value from the query request
-func (ctx *Context) QueryInt(key string, defval int) (int, error) {
-	params, err := ctx.QueryAll()
-	if err != nil {
-		return defval, err
-	}
-	if vals, ok := params[key]; ok {
-		len := len(vals)
-		if len > 0 {
-			intval, err := strconv.Atoi(vals[len-1]) // return the last elem
-			if err != nil {
-				return defval, err
-			}
-			return intval, nil
-		}
-	}
-	return defval, errors.New("key not found")
-}
-
-// QueryString gets a string value from the query request
-func (ctx *Context) QueryString(key string, defval string) (string, error) {
-	params, err := ctx.QueryAll()
-	if err != nil {
-		return defval, err
-	}
-	if vals, ok := params[key]; ok {
-		len := len(vals)
-		if len > 0 {
-			return vals[len-1], nil // return the last elem
-		}
-	}
-	return defval, errors.New("key not found")
-}
-
-// QueryArray gets an array of string values from the query request
-func (ctx *Context) QueryArray(key string, defval []string) ([]string, error) {
-	params, err := ctx.QueryAll()
-	if err != nil {
-		return defval, err
-	}
-	if vals, ok := params[key]; ok {
-		return vals, nil // return the last elem
-	}
-	return defval, errors.New("key not found")
-}
-
-// QueryAll returns all queries in a request URL
-func (ctx *Context) QueryAll() (url.Values, error) {
-	if ctx.request != nil {
-		return map[string][]string(ctx.request.URL.Query()), nil
-	}
-	return url.Values{}, errors.New("missing request in the context")
-}
-
-// }}}
-// {{{ Post form
-
-// FormInt gets an int value from the submitted form
-func (ctx *Context) FormInt(key string, defval int) (int, error) {
-	vals, err := ctx.FormAll()
-	if err != nil {
-		return defval, err
-	}
-
-	valStrs, ok := vals[key]
-	if !ok {
-		return defval, errors.New("key not found")
-	}
-
-	valInt, err := strconv.Atoi(valStrs[0]) // Get the first one as result
-	if err != nil {
-		return defval, err
-	}
-
-	return valInt, nil
-}
-
-// FormString gets a string value from the submitted form
-func (ctx *Context) FormString(key string, defval string) (string, error) {
-	vals, err := ctx.FormAll()
-	if err != nil {
-		return defval, err
-	}
-
-	valStrs, ok := vals[key]
-	if !ok {
-		return defval, errors.New("key not found")
-	}
-
-	return valStrs[0], nil
-}
-
-// FormArray gets an array of string values from the submitted form
-func (ctx *Context) FormArray(key string, defval []string) ([]string, error) {
-	vals, err := ctx.FormAll()
-	if err != nil {
-		return defval, err
-	}
-
-	valStrs, ok := vals[key]
-	if !ok {
-		return defval, errors.New("key not found")
-	}
-
-	return valStrs, nil
-}
-
-// FormAll gets everything from the submitted form
-func (ctx *Context) FormAll() (url.Values, error) {
-	if ctx.request != nil {
-		err := ctx.request.ParseForm()
-		if err != nil {
-			return url.Values{}, err
-		}
-		return ctx.request.PostForm, err
-	}
-	return url.Values{}, errors.New("missing request in the context")
-}
-
-// }}}
 // {{{ application/json
 
 // ReadJSON binds the request JSON body to an object.
diff --git a/framework/request.go b/framework/request.go
new file mode 100644
index 0000000..17054fb
--- /dev/null
+++ b/framework/request.go
@@ -0,0 +1,283 @@
+package framework
+
+import (
+	"mime/multipart"
+	"net/url"
+
+	"github.com/spf13/cast"
+)
+
+type IRequest interface {
+	// url query
+	// e.g. foo.com?a=1&b=bar&c[]=bar
+	QueryAll(key string) url.Values
+	QueryInt(key string, defval int) (int, bool)
+	QueryInt64(key string, defval int64) (int64, bool)
+	QueryFloat32(key string, defval float32) (float32, bool)
+	QueryFloat64(key string, defval float64) (float64, bool)
+	QueryBool(key string, defval bool) (bool, bool)
+	QueryString(key string, defval string) (string, bool)
+	QueryStringSlice(key string, defval []string) ([]string, bool)
+
+	// url params
+	// e.g. /book/:id
+	Param(key string) any
+	ParamInt(key string, defval int) (int, bool)
+	ParamInt64(key string, defval int64) (int64, bool)
+	ParamFloat32(key string, defval float32) (float32, bool)
+	ParamFloat64(key string, defval float64) (float64, bool)
+	ParamBool(key string, defval bool) (bool, bool)
+	ParamString(key string, defval string) (string, bool)
+
+	// form
+	FormAll(key string) url.Values
+	FormInt(key string, defval int) (int, bool)
+	FormInt64(key string, defval int64) (int64, bool)
+	FormFloat32(key string, defval float32) (float32, bool)
+	FormFloat64(key string, defval float64) (float64, bool)
+	FormBool(key string, defval bool) (bool, bool)
+	FormString(key string, defval string) (string, bool)
+	FormStringSlice(key string, defval []string) ([]string, bool)
+	FormFile(key string) (*multipart.FileHeader, error)
+
+	// JSON body
+	BindJSON(obj any) error
+
+	// XML body
+	BindXML(obj any) error
+
+	// RAW body
+	GetRawData() ([]byte, error)
+
+	// Basic informations
+	Uri() string
+	Method() string
+	Host() string
+	ClientIP() string
+
+	// Header
+	Headers() map[string][]string
+	Header(key string) (string, bool)
+
+	// Cookie
+	Cookies() map[string]string
+	Cookie(key string) (string, bool)
+}
+
+// {{{ url query
+
+// QueryAll returns all queries in a request URL
+func (ctx *Context) QueryAll() url.Values {
+	if ctx.request != nil {
+		return map[string][]string(ctx.request.URL.Query())
+	}
+	return url.Values{}
+}
+
+// QueryInt gets an int value from the query request
+func (ctx *Context) QueryInt(key string, defval int) (int, bool) {
+	params := ctx.QueryAll()
+	if vals, ok := params[key]; ok {
+		if len(vals) > 0 {
+			return cast.ToInt(vals[0]), true
+		}
+	}
+	return defval, false
+}
+
+func (ctx *Context) QueryInt64(key string, defval int64) (int64, bool) {
+	params := ctx.QueryAll()
+	if vals, ok := params[key]; ok {
+		if len(vals) > 0 {
+			return cast.ToInt64(vals[0]), true
+		}
+	}
+	return defval, false
+}
+
+func (ctx *Context) QueryBool(key string, defval bool) (bool, bool) {
+	params := ctx.QueryAll()
+	if vals, ok := params[key]; ok {
+		if len(vals) > 0 {
+			return cast.ToBool(vals[0]), true
+		}
+	}
+	return defval, false
+}
+
+func (ctx *Context) QueryFloat32(key string, defval float32) (float32, bool) {
+	params := ctx.QueryAll()
+	if vals, ok := params[key]; ok {
+		if len(vals) > 0 {
+			return cast.ToFloat32(vals[0]), true
+		}
+	}
+	return defval, false
+}
+
+func (ctx *Context) QueryFloat64(key string, defval float64) (float64, bool) {
+	params := ctx.QueryAll()
+	if vals, ok := params[key]; ok {
+		if len(vals) > 0 {
+			return cast.ToFloat64(vals[0]), true
+		}
+	}
+	return defval, false
+}
+
+// QueryString gets a string value from the query request
+func (ctx *Context) QueryString(key string, defval string) (string, bool) {
+	params := ctx.QueryAll()
+	if vals, ok := params[key]; ok {
+		if len(vals) > 0 {
+			return cast.ToString(vals[0]), true
+		}
+	}
+	return defval, false
+}
+
+// QueryArray gets an array of string values from the query request
+func (ctx *Context) QueryStringSlice(key string, defval []string) ([]string, bool) {
+	params := ctx.QueryAll()
+	if vals, ok := params[key]; ok {
+		return cast.ToStringSlice(vals[0]), true
+	}
+	return defval, false
+}
+
+// }}}
+// {{{ url params
+
+func (ctx *Context) Param(key string) any {
+	if ctx.params != nil {
+		if val, ok := ctx.params[key]; ok {
+			return val
+		}
+	}
+	return nil
+}
+
+func (ctx *Context) ParamInt(key string, def int) (int, bool) {
+	if val := ctx.Param(key); val != nil {
+		return cast.ToInt(val), true
+	}
+	return def, false
+}
+
+func (ctx *Context) ParamInt64(key string, def int64) (int64, bool) {
+	if val := ctx.Param(key); val != nil {
+		return cast.ToInt64(val), true
+	}
+	return def, false
+}
+
+func (ctx *Context) ParamFloat64(key string, def float64) (float64, bool) {
+	if val := ctx.Param(key); val != nil {
+		return cast.ToFloat64(val), true
+	}
+	return def, false
+}
+
+func (ctx *Context) ParamFloat32(key string, def float32) (float32, bool) {
+	if val := ctx.Param(key); val != nil {
+		return cast.ToFloat32(val), true
+	}
+	return def, false
+}
+
+func (ctx *Context) ParamBool(key string, def bool) (bool, bool) {
+	if val := ctx.Param(key); val != nil {
+		return cast.ToBool(val), true
+	}
+	return def, false
+}
+
+func (ctx *Context) ParamString(key string, def string) (string, bool) {
+	if val := ctx.Param(key); val != nil {
+		return cast.ToString(val), true
+	}
+	return def, false
+}
+
+// }}}
+// {{{ Post form
+
+// FormAll gets everything from the submitted form
+func (ctx *Context) FormAll() url.Values {
+	if ctx.request != nil {
+		_ = ctx.request.ParseForm()
+		return ctx.request.PostForm
+	}
+	return url.Values{}
+}
+
+// FormInt gets an int value from the submitted form
+func (ctx *Context) FormInt(key string, defval int) (int, bool) {
+	params := ctx.FormAll()
+	if vals, ok := params[key]; ok {
+		if len(vals) > 0 {
+			return cast.ToInt(vals[0]), true
+		}
+	}
+	return defval, false
+}
+
+func (ctx *Context) FormInt64(key string, defval int64) (int64, bool) {
+	params := ctx.FormAll()
+	if vals, ok := params[key]; ok {
+		if len(vals) > 0 {
+			return cast.ToInt64(vals[0]), true
+		}
+	}
+	return defval, false
+}
+
+func (ctx *Context) FormBool(key string, defval bool) (bool, bool) {
+	params := ctx.FormAll()
+	if vals, ok := params[key]; ok {
+		if len(vals) > 0 {
+			return cast.ToBool(vals[0]), true
+		}
+	}
+	return defval, false
+}
+
+func (ctx *Context) FormFloat32(key string, defval float32) (float32, bool) {
+	params := ctx.FormAll()
+	if vals, ok := params[key]; ok {
+		if len(vals) > 0 {
+			return cast.ToFloat32(vals[0]), true
+		}
+	}
+	return defval, false
+}
+
+func (ctx *Context) FormFloat64(key string, defval float64) (float64, bool) {
+	params := ctx.FormAll()
+	if vals, ok := params[key]; ok {
+		if len(vals) > 0 {
+			return cast.ToFloat64(vals[0]), true
+		}
+	}
+	return defval, false
+}
+
+func (ctx *Context) FormString(key string, defval string) (string, bool) {
+	params := ctx.FormAll()
+	if vals, ok := params[key]; ok {
+		if len(vals) > 0 {
+			return cast.ToString(vals[0]), true
+		}
+	}
+	return defval, false
+}
+
+func (ctx *Context) FormStringSlice(key string, defval []string) ([]string, bool) {
+	params := ctx.FormAll()
+	if vals, ok := params[key]; ok {
+		return cast.ToStringSlice(vals[0]), true
+	}
+	return defval, false
+}
+
+// }}}
diff --git a/framework/response.go b/framework/response.go
new file mode 100644
index 0000000..31c5fac
--- /dev/null
+++ b/framework/response.go
@@ -0,0 +1,23 @@
+package framework
+
+type IResponse interface {
+	WriteJSON(obj any) IResponse
+	WriteJSONP(obj any) IResponse
+	WriteXML(obj any) IResponse
+	WriteHTML(template string, obj any) IResponse
+	WriteText(format string, values ...any) IResponse
+
+	Redirect(path string) IResponse
+	SetHeader(key string, val string) IResponse
+	SetCookie(
+		key string,
+		val string,
+		maxAge int,
+		path, domain string,
+		secure, httpOnly bool,
+	) IResponse
+	SetStatus(code int) IResponse
+
+	// set 200
+	SetOkStatus() IResponse
+}
diff --git a/go.mod b/go.mod
index c692470..972a4de 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,5 @@
 module git.vinchent.xyz/vinchent/go-web
 
 go 1.22.5
+
+require github.com/spf13/cast v1.7.0
diff --git a/go.sum b/go.sum
index e69de29..9103036 100644
--- a/go.sum
+++ b/go.sum
@@ -0,0 +1,12 @@
+github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHkI4W8=
+github.com/frankban/quicktest v1.14.6/go.mod h1:4ptaffx2x8+WTWXmUCuVU6aPUX1/Mz7zb5vbUoiM6w0=
+github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
+github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
+github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
+github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
+github.com/rogpeppe/go-internal v1.9.0 h1:73kH8U+JUqXU8lRuOHeVHaa/SZPifC7BkcraZVejAe8=
+github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
+github.com/spf13/cast v1.7.0 h1:ntdiHjuueXFgm5nzDRdOS4yfT43P5Fnud6DH50rz/7w=
+github.com/spf13/cast v1.7.0/go.mod h1:ancEpBxwJDODSW/UG4rDrAqiKolqNNh2DX3mk86cAdo=