diff --git a/src/routes/chatStream.ts b/src/routes/chatStream.ts
index 9676382..63a9ed0 100644
--- a/src/routes/chatStream.ts
+++ b/src/routes/chatStream.ts
@@ -772,6 +772,9 @@ export const streamPromptResponse = async ({
             detail: buildToolProgressDetail(
               part.tool,
               part.state.status,
+              toolParams,
+              reason,
+              part.state.status === "error" ? part.state.error : undefined,
             ),
           });
           if (
diff --git a/src/routes/chatStreamEvents.ts b/src/routes/chatStreamEvents.ts
index 58b2a03..10cf841 100644
--- a/src/routes/chatStreamEvents.ts
+++ b/src/routes/chatStreamEvents.ts
@@ -356,6 +356,37 @@ export const normalizeToolStatus = (status: string) => {
   return "running";
 };
 
+const formatProgressValue = (value: unknown): string => {
+  if (typeof value === "string") {
+    return value.length > 120 ? `${value.slice(0, 117)}...` : value;
+  }
+  if (
+    typeof value === "number" ||
+    typeof value === "boolean" ||
+    value === null ||
+    value === undefined
+  ) {
+    return String(value);
+  }
+  try {
+    const serialized = JSON.stringify(value);
+    return serialized.length > 120 ? `${serialized.slice(0, 117)}...` : serialized;
+  } catch {
+    return "[unserializable]";
+  }
+};
+
+const summarizeToolParams = (params: Record<string, unknown>) => {
+  const ignoredKeys = new Set(["reason", "request_reason", "why", "purpose", "rationale"]);
+  const summary = Object.entries(params)
+    .filter(([key]) => !ignoredKeys.has(key))
+    .slice(0, 4)
+    .map(([key, value]) => `${key}=${formatProgressValue(value)}`)
+    .join(", ");
+
+  return summary || "无附加参数";
+};
+
 export const buildSessionStatusDetail = (status: { type: string; message?: string }) => {
   if (status.type === "retry") {
     return status.message
@@ -382,19 +413,25 @@ export const buildReasoningProgressDetail = (
 export const buildToolProgressDetail = (
   tool: string,
   status: string,
+  params: Record<string, unknown>,
+  reason: string,
+  error?: string,
 ) => {
   const toolName = toolLabels[tool] ?? tool;
+  const reasonText = reason ? `；调用原因：${reason}` : "";
+  const paramsText = `；关键参数：${summarizeToolParams(params)}`;
 
   if (status === "error") {
-    return `${toolName} 调用失败。`;
+    const errorText = error ? `；错误：${error}` : "";
+    return `${toolName} 调用失败${reasonText}${paramsText}${errorText}`;
   }
   if (status === "completed") {
-    return `${toolName} 已执行完成。`;
+    return `${toolName} 已执行完成${reasonText}${paramsText}`;
   }
   if (status === "pending") {
-    return `${toolName} 等待执行。`;
+    return `${toolName} 已进入待执行状态${reasonText}${paramsText}`;
   }
-  return `${toolName} 正在执行。`;
+  return `${toolName} 正在执行${reasonText}${paramsText}`;
 };
 
 export const getToolProgressTitle = (tool: string, status: string) => {
diff --git a/tests/routes/chatStream.test.ts b/tests/routes/chatStream.test.ts
index e72393e..0466da5 100644
--- a/tests/routes/chatStream.test.ts
+++ b/tests/routes/chatStream.test.ts
@@ -168,7 +168,7 @@ describe("streamPromptResponse", () => {
     ).toBe("最终分析结果。");
   });
 
-  it("keeps reasoning, tool parameters, and raw errors out of progress details", async () => {
+  it("keeps reasoning generic while preserving tool execution details", async () => {
     const runtime = {
       subscribeEvents: async () =>
         createEventStream([
@@ -246,7 +246,9 @@ describe("streamPromptResponse", () => {
       (item) => item.event === "progress" && item.data.id === "tool-part-1",
     );
     expect(reasoningProgress?.data.detail).toBe("分析步骤已整理完成。");
-    expect(toolProgress?.data.detail).toBe("tjwater_cli 调用失败。");
+    expect(toolProgress?.data.detail).toBe(
+      "tjwater_cli 调用失败；调用原因：尝试突破分页限制；关键参数：command=network get-all-pipes-properties --limit 5000；错误：HTTP_422 raw backend payload with trace_id=secret-trace",
+    );
   });
 
   it("forwards opencode permission requests as SSE payloads", async () => {