diff --git a/server/routes/agent-chat.js b/server/routes/agent-chat.js
index 539fbb1..1c2f668 100644
--- a/server/routes/agent-chat.js
+++ b/server/routes/agent-chat.js
@@ -2872,3 +2872,10 @@ ${resultsText.join('\n\n')}
 });
 
 module.exports = router;
+// 供 open-api.js 的 invoke 端点复用——外部 API 调用也要写进同一份会话存储，
+// 否则网页 AgentChat 看不到 API 触发的对话（见 docs/done/open-api-manual.md 的 invoke 端点）。
+module.exports.loadMeta = loadMeta;
+module.exports.saveMeta = saveMeta;
+module.exports.appendHistory = appendHistory;
+module.exports.logMessage = logMessage;
+module.exports.flushLogBufferForConv = flushLogBufferForConv;
diff --git a/server/routes/open-api.js b/server/routes/open-api.js
index 7ce23b0..2d5ad0e 100644
--- a/server/routes/open-api.js
+++ b/server/routes/open-api.js
@@ -607,9 +607,26 @@ async function _executeAgentInvocation(job, { agentDir, namespacedId, task, cont
   const { loadConfigFromSkills } = require('../src/core/skill-config-loader');
   const AgentManager = require('../src/core/agent-manager');
   const config = require('../config');
+  // 复用 agent-chat.js 的会话存储，让 API 调用也能在网页 AgentChat 里追溯
+  // （否则 job 结果只落 .data/jobs-openapi.json，网页永远看不到）。
+  const agentChat = require('./agent-chat');
+  const convId = `conv-${Date.now().toString(36)}`;
 
   jobManager.updateJob(job.jobId, { status: 'running', progress: 'Initializing agent session...' });
 
+  agentChat.saveMeta(namespacedId, convId, {
+    conversationId: convId,
+    agentId: namespacedId,
+    title: task.slice(0, 50),
+    type: 'api_invoke',
+    createdAt: new Date().toISOString(),
+    status: 'running',
+    stats: { messageCount: 1, toolCallCount: 0 },
+    jobId: job.jobId,
+  });
+  agentChat.logMessage(namespacedId, convId, 'user', task);
+  agentChat.appendHistory(namespacedId, convId, { role: 'user', content: task, messageId: `job-${job.jobId}`, timestamp: new Date().toISOString() });
+
   let enrichedTask = task;
 
   // Process Context Files
@@ -662,18 +679,28 @@ async function _executeAgentInvocation(job, { agentDir, namespacedId, task, cont
 
   try {
     const result = await manager.callAgent(namespacedId, enrichedTask, { onData: onData(namespacedId) });
-    
-    jobManager.updateJob(job.jobId, { 
-      status: 'completed', 
-      progress: 'Invocation completed', 
-      result: { 
-        output: result.output || fullOutput || '(Empty Output)' 
+    const output = result.output || fullOutput || '(Empty Output)';
+
+    jobManager.updateJob(job.jobId, {
+      status: 'completed',
+      progress: 'Invocation completed',
+      result: {
+        output
       }
     });
 
+    agentChat.logMessage(namespacedId, convId, 'agent', output);
+    agentChat.appendHistory(namespacedId, convId, { role: 'assistant', content: output, messageId: `job-${job.jobId}-out`, timestamp: new Date().toISOString() });
+    const meta = agentChat.loadMeta(namespacedId, convId);
+    if (meta) { meta.status = 'completed'; agentChat.saveMeta(namespacedId, convId, meta); }
+    agentChat.flushLogBufferForConv(namespacedId, convId);
+
     try { await manager.closeAllSessions(); } catch {}
   } catch (err) {
     jobManager.updateJob(job.jobId, { status: 'failed', error: err.message, progress: `Agent execution failed: ${err.message}` });
+    const meta = agentChat.loadMeta(namespacedId, convId);
+    if (meta) { meta.status = 'failed'; agentChat.saveMeta(namespacedId, convId, meta); }
+    agentChat.flushLogBufferForConv(namespacedId, convId);
     try { await manager.closeAllSessions(); } catch {}
     throw err;
   }