diff --git a/adapter/chatgpt/chat.go b/adapter/chatgpt/chat.go
index 653615d..d71f2ce 100644
--- a/adapter/chatgpt/chat.go
+++ b/adapter/chatgpt/chat.go
@@ -122,10 +122,14 @@ func (c *ChatInstance) Test() bool {
 	return err == nil && len(result) > 0
 }
 
-func FilterKeys(v string) string {
+func FilterKeys(v string) []string {
 	endpoint := viper.GetString(fmt.Sprintf("openai.%s.endpoint", v))
 	keys := strings.Split(viper.GetString(fmt.Sprintf("openai.%s.apikey", v)), "|")
 
+	return FilterKeysNative(endpoint, keys)
+}
+
+func FilterKeysNative(endpoint string, keys []string) []string {
 	stack := make(chan string, len(keys))
 	for _, key := range keys {
 		go func(key string) {
@@ -140,5 +144,5 @@ func FilterKeys(v string) string {
 			result = append(result, res)
 		}
 	}
-	return strings.Join(result, "|")
+	return result
 }
diff --git a/app/src/assets/markdown/all.less b/app/src/assets/markdown/all.less
index 666155e..94d9fe2 100644
--- a/app/src/assets/markdown/all.less
+++ b/app/src/assets/markdown/all.less
@@ -27,18 +27,54 @@
   }
 }
 
-.markdown-body pre code {
-  color: #c9d1d9;
-}
+.markdown-body {
+  pre code {
+    color: #c9d1d9;
+  }
 
-.markdown-body pre.file-block,
-.markdown-body pre.file-block > div {
-  padding: 0;
-  margin: 0;
-  background: none !important;
-  box-shadow: none !important;
+  pre.file-block,
+  pre.file-block > div {
+    padding: 0;
+    margin: 0;
+    background: none !important;
+    box-shadow: none !important;
 
-  &:before {
-    content: none !important;
+    &:before {
+      content: none !important;
+    }
+  }
+
+  .markdown-syntax {
+    position: relative;
+
+    .markdown-syntax-header {
+      position: absolute;
+      display: flex;
+      flex-direction: row;
+      align-items: center;
+      justify-content: center;
+      z-index: 1;
+      top: -30px;
+      right: 2px;
+      user-select: none;
+
+      p {
+        font-size: 12px;
+        line-height: 1;
+        margin: 0 0 0 6px;
+        padding: 0;
+        transform: translateY(-2px);
+      }
+
+      svg {
+        cursor: pointer;
+        color: hsl(var(--text-secondary));
+        transition: .2s;
+
+        &:hover {
+          color: hsl(var(--text));
+        }
+      }
+    }
   }
 }
diff --git a/app/src/components/Markdown.tsx b/app/src/components/Markdown.tsx
index 275cc9d..f3f705f 100644
--- a/app/src/components/Markdown.tsx
+++ b/app/src/components/Markdown.tsx
@@ -11,6 +11,10 @@ import { useDispatch } from "react-redux";
 import { openDialog as openQuotaDialog } from "../store/quota.ts";
 import { openDialog as openSubscriptionDialog } from "../store/subscription.ts";
 import { AppDispatch } from "../store";
+import {Copy} from "lucide-react";
+import {copyClipboard} from "../utils.ts";
+import {useToast} from "./ui/use-toast.ts";
+import {useTranslation} from "react-i18next";
 
 type MarkdownProps = {
   children: string;
@@ -30,6 +34,9 @@ function doAction(dispatch: AppDispatch, url: string): boolean {
 
 function Markdown({ children, className }: MarkdownProps) {
   const dispatch = useDispatch();
+  const { t } = useTranslation();
+  const { toast } = useToast();
+
 
   useEffect(() => {
     document.querySelectorAll(".file-instance").forEach((el) => {
@@ -67,17 +74,27 @@ function Markdown({ children, className }: MarkdownProps) {
           if (match && match[1] === "file")
             return parseFile(children.toString());
           return !inline && match ? (
-            <SyntaxHighlighter
-              {...props}
-              children={String(children).replace(/\n$/, "")}
-              style={style}
-              language={match[1]}
-              PreTag="div"
-              wrapLongLines={true}
-              wrapLines={true}
-              className={`code-block`}
-              lang={match[1]}
-            />
+            <div className={`markdown-syntax`}>
+              <div className={`markdown-syntax-header`}>
+                <Copy className={`h-3 w-3`} onClick={async () => {
+                  await copyClipboard(children.toString());
+                  toast({
+                    title: t("share.copied"),
+                  });
+                }} />
+                <p>{match[1]}</p>
+              </div>
+              <SyntaxHighlighter
+                {...props}
+                children={String(children).replace(/\n$/, "")}
+                style={style}
+                language={match[1]}
+                PreTag="div"
+                wrapLongLines={true}
+                wrapLines={true}
+                className={`code-block`}
+              />
+            </div>
           ) : (
             <code className={`code-inline ${className}`} {...props}>
               {children}
diff --git a/app/src/conf.ts b/app/src/conf.ts
index f686cd1..b56a972 100644
--- a/app/src/conf.ts
+++ b/app/src/conf.ts
@@ -1,7 +1,7 @@
 import axios from "axios";
 import { Model } from "./conversation/types.ts";
 
-export const version = "3.5.19";
+export const version = "3.5.20";
 export const dev: boolean = window.location.hostname === "localhost";
 export const deploy: boolean = true;
 export let rest_api: string = "http://localhost:8094";
diff --git a/app/src/store/api.ts b/app/src/store/api.ts
index 5ad7fd8..fc0984e 100644
--- a/app/src/store/api.ts
+++ b/app/src/store/api.ts
@@ -22,6 +22,7 @@ export const apiSlice = createSlice({
       state.dialog = false;
     },
     setKey: (state, action) => {
+      if (!action.payload.length) return;
       state.key = action.payload as string;
     },
   },
diff --git a/cli/exec.go b/cli/exec.go
index 6a33a7a..b791c7a 100644
--- a/cli/exec.go
+++ b/cli/exec.go
@@ -13,6 +13,9 @@ func Run() bool {
 	case "invite":
 		CreateInvitationCommand(args[1:])
 		return true
+	case "filter":
+		FilterApiKeyCommand(args[1:])
+		return true
 	default:
 		return false
 	}
diff --git a/cli/filter.go b/cli/filter.go
new file mode 100644
index 0000000..4b5a433
--- /dev/null
+++ b/cli/filter.go
@@ -0,0 +1,18 @@
+package cli
+
+import (
+	"chat/adapter/chatgpt"
+	"fmt"
+	"github.com/spf13/viper"
+	"strings"
+)
+
+func FilterApiKeyCommand(args []string) {
+	data := strings.Trim(strings.TrimSpace(GetArgString(args, 0)), "\"")
+	endpoint := viper.GetString("openai.test")
+	keys := strings.Split(data, "|")
+
+	available := chatgpt.FilterKeysNative(endpoint, keys)
+	fmt.Println(fmt.Sprintf("[cli] filtered %d keys, %d available, %d unavailable", len(keys), len(available), len(keys)-len(available)))
+	fmt.Println(strings.Join(available, "|"))
+}