diff --git a/README.md b/README.md
index 3117fc8..de42975 100644
--- a/README.md
+++ b/README.md
@@ -150,7 +150,7 @@ session_end
   ├─ finalize (LLM): EVENT → SKILL promotion
   └─ maintenance: dedup → PageRank → community detection
 
-Next session → before_agent_start
+Next session → before_prompt_build
   ├─ Dual-path recall (precise + generalized)
   └─ Personalized PageRank ranking → inject into context
 ```
@@ -404,4 +404,4 @@ graph-memory/
 
 ## License
 
-MIT
\ No newline at end of file
+MIT
diff --git a/README_CN.md b/README_CN.md
index 91d1192..1d1f335 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -152,7 +152,7 @@ session_end
   ├─ finalize（LLM）：EVENT → SKILL 升级
   └─ maintenance：去重 → PageRank → 社区检测
 
-下次新对话 → before_agent_start
+下次新对话 → before_prompt_build
   ├─ 双路径召回（精确 + 泛化）
   └─ 个性化 PageRank 排序 → 注入上下文
 ```
@@ -406,4 +406,4 @@ graph-memory/
 
 ## 许可证
 
-MIT
\ No newline at end of file
+MIT
diff --git a/index.ts b/index.ts
index 6b57f18..16f2f31 100755
--- a/index.ts
+++ b/index.ts
@@ -232,9 +232,9 @@ const graphMemoryPlugin = {
       return next;
     }
 
-    // ── before_agent_start：召回 ────────────────────────────
+    // ── before_prompt_build：召回 ────────────────────────────
 
-    api.on("before_agent_start", async (event: any, ctx: any) => {
+    api.on("before_prompt_build", async (event: any, ctx: any) => {
       try {
         const rawPrompt = typeof event?.prompt === "string" ? event.prompt : "";
         const prompt = cleanPrompt(rawPrompt);
@@ -854,4 +854,4 @@ function sliceLastTurn(
   return { messages: kept, tokens, dropped };
 }
 
-export default graphMemoryPlugin;
\ No newline at end of file
+export default graphMemoryPlugin;