diff --git a/src/sidebarProvider.ts b/src/sidebarProvider.ts
index 83e6ea8..e83fc72 100644
--- a/src/sidebarProvider.ts
+++ b/src/sidebarProvider.ts
@@ -130,6 +130,12 @@ export class SidebarChatProvider implements vscode.WebviewViewProvider, BridgeIn
                 case 'setBrainProfile':
                     await this._setActiveBrainProfile(data.id);
                     break;
+                case 'getAgentContent':
+                    await this._sendAgentContent(data.path);
+                    break;
+                case 'updateAgent':
+                    await this._updateAgent(data.path, data.content);
+                    break;
                 case 'refreshModels':
                     await this._sendModels();
                     break;
@@ -622,6 +628,24 @@ export class SidebarChatProvider implements vscode.WebviewViewProvider, BridgeIn
         await this._sendAgentsList();
     }
 
+    private async _sendAgentContent(agentPath: string) {
+        if (!this._view || !agentPath || agentPath === 'none') return;
+        if (fs.existsSync(agentPath)) {
+            const content = fs.readFileSync(agentPath, 'utf8');
+            this._view.webview.postMessage({ type: 'agentContent', value: content });
+        }
+    }
+
+    private async _updateAgent(agentPath: string, content: string) {
+        if (!agentPath || agentPath === 'none') return;
+        try {
+            fs.writeFileSync(agentPath, content, 'utf8');
+            vscode.window.showInformationMessage('Agent skill updated successfully.');
+        } catch (err: any) {
+            vscode.window.showErrorMessage(`Failed to update agent: ${err.message}`);
+        }
+    }
+
     private async _handlePrompt(data: any) {
         if (!this._view) return;
 
@@ -1001,8 +1025,14 @@ export class SidebarChatProvider implements vscode.WebviewViewProvider, BridgeIn
     </div>
 
     <div class="input-wrap">
-        <div id="agentConfigPanel" style="display:none; padding-bottom:8px;">
-            <textarea id="negativePrompt" rows="2" placeholder="Negative Prompt (What NOT to do)..." style="font-size:11.5px; padding:8px; border-radius:8px; border:1px solid var(--border); background:var(--input-bg); color:var(--text-bright); width:100%; resize:vertical; font-family:inherit; outline:none;"></textarea>
+        <div id="agentConfigPanel" style="display:none; padding-bottom:8px; flex-direction: column; gap: 8px;">
+            <div style="font-size: 10px; color: var(--text-dim); margin-bottom: -4px;">Agent Persona/Instructions</div>
+            <textarea id="agentPrompt" rows="5" placeholder="Agent Persona & Instructions..." style="font-size:11.5px; padding:8px; border-radius:8px; border:1px solid var(--border); background:var(--input-bg); color:var(--text-bright); width:100%; resize:vertical; font-family:inherit; outline:none;"></textarea>
+            
+            <div style="font-size: 10px; color: var(--text-dim); margin-bottom: -4px;">Negative Prompt (Strict Rules)</div>
+            <textarea id="negativePrompt" rows="2" placeholder="What NOT to do..." style="font-size:11.5px; padding:8px; border-radius:8px; border:1px solid var(--border); background:var(--input-bg); color:var(--text-bright); width:100%; resize:vertical; font-family:inherit; outline:none;"></textarea>
+            
+            <button id="updateAgentBtn" style="background: var(--surface); border: 1px solid var(--border); color: var(--text-primary); padding: 6px; font-size: 10px; border-radius: 6px; cursor: pointer; transition: 0.2s;">Update Agent Skill</button>
         </div>
         <div class="input-box">
             <div id="attachPreview" class="attachment-preview"></div>
@@ -1036,7 +1066,9 @@ export class SidebarChatProvider implements vscode.WebviewViewProvider, BridgeIn
         const agentSel = document.getElementById('agentSel');
         const addAgentBtn = document.getElementById('addAgentBtn');
         const agentConfigPanel = document.getElementById('agentConfigPanel');
+        const agentPrompt = document.getElementById('agentPrompt');
         const negativePrompt = document.getElementById('negativePrompt');
+        const updateAgentBtn = document.getElementById('updateAgentBtn');
 
         let streamBody = null;
         let internetEnabled = false;
@@ -1163,6 +1195,9 @@ export class SidebarChatProvider implements vscode.WebviewViewProvider, BridgeIn
                         agentSel.appendChild(o);
                     });
                     break;
+                case 'agentContent':
+                    agentPrompt.value = msg.value;
+                    break;
                 case 'error':
                     thinkingBar.classList.remove('active'); sendBtn.disabled = false;
                     addMsg(msg.value, 'error');
@@ -1242,13 +1277,25 @@ export class SidebarChatProvider implements vscode.WebviewViewProvider, BridgeIn
 
         agentSel.onchange = () => {
             if (agentSel.value !== 'none') {
-                agentConfigPanel.style.display = 'block';
+                agentConfigPanel.style.display = 'flex';
+                vscode.postMessage({ type: 'getAgentContent', path: agentSel.value });
             } else {
                 agentConfigPanel.style.display = 'none';
+                agentPrompt.value = '';
                 negativePrompt.value = '';
             }
         };
 
+        updateAgentBtn.onclick = () => {
+            if (agentSel.value !== 'none') {
+                vscode.postMessage({ 
+                    type: 'updateAgent', 
+                    path: agentSel.value, 
+                    content: agentPrompt.value 
+                });
+            }
+        };
+
         addAgentBtn.onclick = () => vscode.postMessage({ type: 'createAgent' });
 
         vscode.postMessage({ type: 'getModels' });