diff --git a/CHANGELOG.md b/CHANGELOG.md
index e011889..180e312 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,22 @@
 # Changelog
 
+## v2.5.5 (2026-03-12)
+
+### 🐛 修复长响应误判为拒绝
+
+- **问题**：工具模式下，模型输出长文本（如 8654 字符的深度分析报告），正文中碰巧包含 `无法提供...信息`、`工具调用场景`、`即报错` 等拒绝检测关键词，导致整个响应被替换为无意义的引导文本 `"I understand the request..."`，进而 Claude Code 陷入死循环
+- **修复策略**：
+  - 截断响应（`stop_reason=max_tokens`）完全跳过拒绝检测 — 8654 字符的响应不可能是拒绝
+  - 长响应（≥ 500 字符）仅检查**前 300 字符**是否包含拒绝模式 — 拒绝一定在开头
+  - 短响应（< 500 字符）保持全文检测 — 真正的拒绝回复通常很短
+- 流式和非流式处理均已修复
+
+### 🔇 减少 tolerantParse 日志噪音
+
+- 模型输出中的普通 JSON 代码块（如含正则 `[\s\S]*?` 的代码示例）不再打印 `error` 级别日志
+- 仅当内容包含 `"tool"` / `"name"` 键（疑似工具调用）时才报 error，其余降为 `warn` 级别
+
+---
 ## v2.5.4 (2026-03-11)
 
 ### 🌐 内网代理支持 (Issue #17)
diff --git a/package.json b/package.json
index 7b953a8..d0c3086 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cursor2api",
-  "version": "2.5.4",
+  "version": "2.5.5",
   "description": "Proxy Cursor docs AI to Anthropic Messages API for Claude Code",
   "type": "module",
   "scripts": {
diff --git a/src/converter.ts b/src/converter.ts
index 03a6345..2c238f6 100644
--- a/src/converter.ts
+++ b/src/converter.ts
@@ -640,7 +640,13 @@ export function parseToolCalls(responseText: string): {
                     blocksToRemove.push({ start: blockStart, end: closingPos + 3 });
                 }
             } catch (e) {
-                console.error('[Converter] tolerantParse 失败:', e);
+                // 仅当内容看起来像工具调用时才报 error，否则可能只是普通 JSON 代码块（代码示例等）
+                const looksLikeToolCall = /["'](?:tool|name)["']\s*:/.test(jsonContent);
+                if (looksLikeToolCall) {
+                    console.error('[Converter] tolerantParse 失败（疑似工具调用）:', e);
+                } else {
+                    console.warn(`[Converter] 跳过非工具调用的 json 代码块 (${jsonContent.length} chars)`);
+                }
             }
         } else {
             // 没有闭合 ``` — 代码块被截断，尝试解析已有内容
diff --git a/src/handler.ts b/src/handler.ts
index d5129fd..e1a4f55 100644
--- a/src/handler.ts
+++ b/src/handler.ts
@@ -728,7 +728,14 @@ Continue EXACTLY from where you stopped. DO NOT repeat any content already gener
                 // We must send the remaining unsent fullResponse.
                 let textToSend = fullResponse;
 
-                if (isRefusal(fullResponse)) {
+                // ★ 仅对短响应或开头明确匹配拒绝模式的响应进行压制
+                // 长响应（如模型在写报告）中可能碰巧包含某个宽泛的拒绝关键词，不应被误判
+                // 截断响应（stopReason=max_tokens）一定不是拒绝
+                const isShortResponse = fullResponse.trim().length < 500;
+                const startsWithRefusal = isRefusal(fullResponse.substring(0, 300));
+                const isActualRefusal = stopReason !== 'max_tokens' && (isShortResponse ? isRefusal(fullResponse) : startsWithRefusal);
+
+                if (isActualRefusal) {
                     console.log(`[Handler] Supressed complete refusal without tools: ${fullResponse.substring(0, 100)}...`);
                     textToSend = 'I understand the request. Let me proceed with the appropriate action. Could you clarify what specific task you would like me to perform?';
                 }
@@ -859,7 +866,11 @@ async function handleNonStream(res: Response, cursorReq: CursorChatRequest, body
             }
         } else {
             let textToSend = fullText;
-            if (isRefusal(fullText)) {
+            // ★ 同样仅对短响应或开头匹配的进行拒绝压制
+            const isShort = fullText.trim().length < 500;
+            const startsRefusal = isRefusal(fullText.substring(0, 300));
+            const isRealRefusal = stopReason !== 'max_tokens' && (isShort ? isRefusal(fullText) : startsRefusal);
+            if (isRealRefusal) {
                 console.log(`[Handler] Supressed pure text refusal (non-stream): ${fullText.substring(0, 100)}...`);
                 textToSend = 'Let me proceed with the task.';
             }