diff --git a/define.go b/define.go
index 825be93..7537fa8 100644
--- a/define.go
+++ b/define.go
@@ -1,12 +1,16 @@
 package nano
 
-var (
+const (
 	// StandardAPI 正式环境接口域名
 	StandardAPI = `https://api.sgroup.qq.com`
 	// SandboxAPI 沙箱环境接口域名
 	SandboxAPI = `https://sandbox.api.sgroup.qq.com`
 )
 
+var (
+	OpenAPI = StandardAPI // OpenAPI 实际使用的 API, 可自行配置
+)
+
 // CodeMessageBase 各种消息都有的 code + message 基类
 type CodeMessageBase struct {
 	C int    `json:"code"`
diff --git a/http.go b/http.go
index da08977..7f10810 100644
--- a/http.go
+++ b/http.go
@@ -17,7 +17,7 @@ import (
 )
 
 func newHTTPEndpointRequestWithAuth(method, contenttype, ep string, auth string, body io.Reader) (req *http.Request, err error) {
-	req, err = http.NewRequest(method, StandardAPI+ep, body)
+	req, err = http.NewRequest(method, OpenAPI+ep, body)
 	if err != nil {
 		return
 	}
diff --git a/http_test.go b/http_test.go
index e91b9f5..18e9a23 100644
--- a/http_test.go
+++ b/http_test.go
@@ -4,7 +4,7 @@ import "testing"
 
 func TestWriteHTTPQueryIfNotNil(t *testing.T) {
 	expstr := "https://api.sgroup.qq.com/testapi?b=1&d=0.5"
-	str := WriteHTTPQueryIfNotNil(StandardAPI+"/testapi", "a", 0, "b", 1, "c", "", "d", 0.5)
+	str := WriteHTTPQueryIfNotNil(OpenAPI+"/testapi", "a", 0, "b", 1, "c", "", "d", 0.5)
 	if str != expstr {
 		t.Fatal("expected", expstr, "but got", str)
 	}
diff --git a/openapi.go b/openapi.go
index e85f9ca..2231355 100644
--- a/openapi.go
+++ b/openapi.go
@@ -35,7 +35,7 @@ func (bot *Bot) GetOpenAPI(ep, contenttype string, ptr any) error {
 	if resp.StatusCode == http.StatusNoContent {
 		return nil
 	}
-	if resp.StatusCode != http.StatusOK {
+	if resp.StatusCode >= http.StatusBadRequest {
 		return errors.Wrap(errors.New("code: "+strconv.Itoa(resp.StatusCode)+", msg: "+resp.Status), getCallerFuncName())
 	}
 	if ptr == nil {
@@ -67,7 +67,7 @@ func (bot *Bot) PutOpenAPI(ep, contenttype string, ptr any, body io.Reader) erro
 	if resp.StatusCode == http.StatusNoContent {
 		return nil
 	}
-	if resp.StatusCode != http.StatusOK {
+	if resp.StatusCode >= http.StatusBadRequest {
 		return errors.Wrap(errors.New("code: "+strconv.Itoa(resp.StatusCode)+", msg: "+resp.Status), getCallerFuncName())
 	}
 	if ptr == nil {
@@ -97,7 +97,7 @@ func (bot *Bot) DeleteOpenAPI(ep, contenttype string, body io.Reader) error {
 	if resp.StatusCode == http.StatusNoContent {
 		return nil
 	}
-	if resp.StatusCode != http.StatusOK {
+	if resp.StatusCode >= http.StatusBadRequest {
 		return errors.Wrap(errors.New("code: "+strconv.Itoa(resp.StatusCode)+", msg: "+resp.Status), getCallerFuncName())
 	}
 	return nil
@@ -119,7 +119,7 @@ func (bot *Bot) PostOpenAPI(ep, contenttype string, ptr any, body io.Reader) err
 	if resp.StatusCode == http.StatusNoContent {
 		return nil
 	}
-	if resp.StatusCode != http.StatusOK {
+	if resp.StatusCode >= http.StatusBadRequest {
 		return errors.Wrap(errors.New("code: "+strconv.Itoa(resp.StatusCode)+", msg: "+resp.Status), getCallerFuncName())
 	}
 	if ptr == nil {
@@ -151,7 +151,7 @@ func (bot *Bot) PatchOpenAPI(ep, contenttype string, ptr any, body io.Reader) er
 	if resp.StatusCode == http.StatusNoContent {
 		return nil
 	}
-	if resp.StatusCode != http.StatusOK {
+	if resp.StatusCode >= http.StatusBadRequest {
 		return errors.Wrap(errors.New("code: "+strconv.Itoa(resp.StatusCode)+", msg: "+resp.Status), getCallerFuncName())
 	}
 	if ptr == nil {