diff --git a/src/mcp/tool_adapter.rs b/src/mcp/tool_adapter.rs
index e28e587..1ce1ee2 100644
--- a/src/mcp/tool_adapter.rs
+++ b/src/mcp/tool_adapter.rs
@@ -8,6 +8,22 @@ use rmcp::model::Tool;
 use crate::mcp::client::McpClientManager;
 use crate::tools::traits::{Tool as PicoBotTool, ToolResult};
 
+/// Sanitize a tool name to comply with OpenAI's function name pattern `^[a-zA-Z0-9_-]+$`.
+/// Any character outside [a-zA-Z0-9_-] (e.g. '.', ':', '/') is replaced with '_'.
+/// This is applied to the LLM-facing name only; `McpToolWrapper` retains the original
+/// `server_key` and `tool_name` for routing tool calls to the correct MCP server.
+fn sanitize_tool_name(name: &str) -> String {
+    name.chars()
+        .map(|c| {
+            if c.is_ascii_alphanumeric() || c == '_' || c == '-' {
+                c
+            } else {
+                '_'
+            }
+        })
+        .collect()
+}
+
 /// Wrapper that adapts an MCP tool to PicoBot's Tool trait
 #[derive(Clone)]
 pub struct McpToolWrapper {
@@ -27,7 +43,18 @@ impl McpToolWrapper {
     /// Create a new tool wrapper
     pub fn new(manager: Arc<McpClientManager>, server_key: String, tool_info: Tool) -> Self {
         let tool_name = tool_info.name.clone().into_owned();
-        let full_name = format!("mcp_{}_{}", server_key, tool_name);
+        let raw_name = format!("mcp_{}_{}", server_key, tool_name);
+        let full_name = sanitize_tool_name(&raw_name);
+        if full_name != raw_name {
+            tracing::warn!(
+                original = %raw_name,
+                sanitized = %full_name,
+                server_key = %server_key,
+                tool_name = %tool_name,
+                "MCP tool name contained characters invalid for OpenAI function name pattern \
+                 (^[a-zA-Z0-9_-]+$); sanitized to comply"
+            );
+        }
         Self {
             manager,
             server_key,
@@ -176,4 +203,45 @@ mod tests {
         assert_eq!(wrapper.original_name(), "echo");
         assert_eq!(wrapper.server_key(), "filesystem");
     }
+
+    #[test]
+    fn test_mcp_tool_wrapper_name_sanitizes_invalid_chars() {
+        // OpenAI requires function names to match ^[a-zA-Z0-9_-]+$.
+        // server_key and tool_name from MCP servers may contain '.', ':', '/', etc.
+        let manager = Arc::new(McpClientManager::new());
+        let schema: serde_json::Map<String, serde_json::Value> =
+            serde_json::json!({"type": "object"})
+                .as_object()
+                .unwrap()
+                .clone();
+        let tool_info = Tool::new("tools.list:read", "Namespaced tool", schema);
+
+        let wrapper = McpToolWrapper::new(manager, "github.api".to_string(), tool_info);
+        // mcp_github.api_tools.list:read → mcp_github_api_tools_list_read
+        assert_eq!(wrapper.name(), "mcp_github_api_tools_list_read");
+        // Original identifiers preserved for routing
+        assert_eq!(wrapper.original_name(), "tools.list:read");
+        assert_eq!(wrapper.server_key(), "github.api");
+    }
+
+    #[test]
+    fn test_sanitize_tool_name_matches_openai_pattern() {
+        let re = regex::Regex::new(r"^[a-zA-Z0-9_-]+$").unwrap();
+        for input in [
+            "mcp_filesystem_echo",
+            "mcp_github.api_tools.list:read",
+            "mcp_a/b@c d",
+            "mcp_中文_tool",
+        ] {
+            let sanitized = sanitize_tool_name(input);
+            assert!(
+                re.is_match(&sanitized),
+                "sanitized name {:?} (from {:?}) does not match OpenAI pattern",
+                sanitized,
+                input
+            );
+        }
+        // Empty stays empty
+        assert_eq!(sanitize_tool_name(""), "");
+    }
 }
diff --git a/web/src/components/Settings/ConfigPage.tsx b/web/src/components/Settings/ConfigPage.tsx
index f29a5fa..bc7d9da 100644
--- a/web/src/components/Settings/ConfigPage.tsx
+++ b/web/src/components/Settings/ConfigPage.tsx
@@ -2062,13 +2062,22 @@ export function ConfigPage({ onClose, onSaveConnection, initialTab }: ConfigPage
     const entries = Object.entries(config.mcpServers);
     const statusFor = (key: string) => mcpStatus?.servers?.find((s) => s.key === key);
     const addMcp = () => {
-      const name = prompt('MCP 服务器名称:')?.trim();
-      if (name && !config.mcpServers[name]) {
-        update('mcpServers', {
-          ...config.mcpServers,
-          [name]: { type: 'stdio', is_active: true, command: '', args: [] },
-        });
+      const name = prompt('MCP 服务器名称（仅字母、数字、下划线、连字符）:')?.trim();
+      if (!name) return;
+      if (!/^[a-zA-Z0-9_-]+$/.test(name)) {
+        setToast('名称只能包含字母、数字、下划线和连字符');
+        setTimeout(() => setToast(''), 3000);
+        return;
       }
+      if (config.mcpServers[name]) {
+        setToast('该名称已存在');
+        setTimeout(() => setToast(''), 3000);
+        return;
+      }
+      update('mcpServers', {
+        ...config.mcpServers,
+        [name]: { type: 'stdio', is_active: true, command: '', args: [] },
+      });
     };
     const delMcp = (name: string) => {
       if (confirm(`删除 MCP 服务器 "${name}"?`)) {
@@ -2076,6 +2085,26 @@ export function ConfigPage({ onClose, onSaveConnection, initialTab }: ConfigPage
         update('mcpServers', rest);
       }
     };
+    const renameMcp = (oldName: string, newName: string) => {
+      const trimmed = newName.trim();
+      if (trimmed === oldName || !trimmed) return;
+      if (!/^[a-zA-Z0-9_-]+$/.test(trimmed)) {
+        setToast('名称只能包含字母、数字、下划线和连字符');
+        setTimeout(() => setToast(''), 3000);
+        return;
+      }
+      if (config.mcpServers[trimmed]) {
+        setToast('该名称已存在');
+        setTimeout(() => setToast(''), 3000);
+        return;
+      }
+      const entries = Object.entries(config.mcpServers);
+      const newMap: Record<string, McpServerConfig> = {};
+      for (const [k, v] of entries) {
+        newMap[k === oldName ? trimmed : k] = v;
+      }
+      update('mcpServers', newMap);
+    };
     const updMcp = (name: string, patch: Partial<McpServerConfig>) =>
       update('mcpServers', {
         ...config.mcpServers,
@@ -2114,9 +2143,9 @@ export function ConfigPage({ onClose, onSaveConnection, initialTab }: ConfigPage
               key={name}
               className="rounded-xl border border-[var(--border-color)] bg-[var(--bg-secondary)]/60 overflow-hidden"
             >
-              <div className="flex items-center gap-2 p-3 border-b border-[var(--border-color)]">
-                {st ? (
-                  st.connected ? (
+              {st && (
+                <div className="flex items-center gap-2 px-4 py-2">
+                  {st.connected ? (
                     <span className="inline-flex items-center gap-1 text-xs text-green-400">
                       <span className="w-2 h-2 rounded-full bg-green-400" /> {st.tool_count} 工具
                     </span>
@@ -2131,18 +2160,14 @@ export function ConfigPage({ onClose, onSaveConnection, initialTab }: ConfigPage
                     <span className="inline-flex items-center gap-1 text-xs text-gray-400">
                       <span className="w-2 h-2 rounded-full bg-gray-400" /> 未连接
                     </span>
-                  )
-                ) : null}
-                <span className="flex-1 text-sm font-medium text-[var(--text-primary)]">
-                  {name}
-                </span>
-                <button
-                  onClick={() => delMcp(name)}
-                  className="p-1 rounded text-[var(--text-muted)] hover:text-red-400 transition-colors"
-                >
-                  <Trash2 className="h-3.5 w-3.5" />
-                </button>
-              </div>
+                  )}
+                </div>
+              )}
+              <MapEntryHeader
+                name={name}
+                onDelete={() => delMcp(name)}
+                onRename={(n) => renameMcp(name, n)}
+              />
               <div className="p-4 space-y-3">
                 <Field label="传输类型">
                   <select
diff --git a/web/src/components/Settings/ui.tsx b/web/src/components/Settings/ui.tsx
index cf791dd..2d41d97 100644
--- a/web/src/components/Settings/ui.tsx
+++ b/web/src/components/Settings/ui.tsx
@@ -388,7 +388,12 @@ export function MapEntryHeader({
       ) : (
         <span
           className="text-sm font-mono text-[var(--accent-cyan)] cursor-pointer"
-          onClick={() => onRename && setEditing(true)}
+          onClick={() => {
+            if (onRename) {
+              setVal(name);
+              setEditing(true);
+            }
+          }}
         >
           {name}
         </span>