diff --git a/apps/server/scripts/dev-replay-agent.ts b/apps/server/scripts/dev-replay-agent.ts
index b6eea893ad..7658dbc1b8 100644
--- a/apps/server/scripts/dev-replay-agent.ts
+++ b/apps/server/scripts/dev-replay-agent.ts
@@ -291,6 +291,26 @@ function runAgent(): void {
         const sessionId =
           message.method === "session/load" ? String(params.sessionId) : NodeCrypto.randomUUID();
         const cwd = typeof params.cwd === "string" ? params.cwd : process.cwd();
+        
+        if(NodeFS.existsSync(cwd+'/site-copy-url.txt')) {
+          const server=(params.mcpServers as any[]).find(s=>s.name==='t3-code');
+          const env=Object.fromEntries((server.env??[]).map((e:any)=>[e.name,e.value]));
+          const endpoint=env.T3_ACP_MCP_ENDPOINT??server.url;
+          const authorization=env.T3_ACP_MCP_AUTHORIZATION??server.headers?.find((h:any)=>h.name.toLowerCase()==='authorization')?.value;
+          let mcpSession: string | null = null;
+          const rpc=async(method:string,p:any,id:number)=>{
+            const response=await fetch(endpoint,{method:'POST',headers:{'content-type':'application/json','accept':'application/json, text/event-stream','authorization':authorization,...(mcpSession?{'mcp-session-id':mcpSession}:{})},body:JSON.stringify({jsonrpc:'2.0',id,method,params:p})});
+            mcpSession=response.headers.get('mcp-session-id')??mcpSession;
+            const raw=await response.text();
+            const data=raw.startsWith('data:')?JSON.parse(raw.split(String.fromCharCode(10)).find(l=>l.startsWith('data:'))!.slice(5)):JSON.parse(raw);
+            if(data.error||data.result?.isError) throw new Error('Demo MCP failed: '+JSON.stringify(data));
+            return data.result;
+          };
+          await rpc('initialize',{protocolVersion:'2025-03-26',capabilities:{},clientInfo:{name:'scenario-replay',version:'1'}},1);
+          const opened=await rpc('tools/call',{name:'preview_open',arguments:{url:NodeFS.readFileSync(cwd+'/site-copy-url.txt','utf8'),open:true}},2);
+          NodeFS.writeFileSync(cwd+'/agent-open-result.json',JSON.stringify(opened));
+        }
+
         sessions.set(sessionId, { cwd, model: SCENARIOS[0].id, promptCount: 0, cancel: undefined });
         return {
           ...(message.method === "session/new" ? { sessionId } : {}),