diff --git a/xiaoqu-agent-service/src/main/java/me/iiv/agent/mcp/ScopeToolSyncService.java b/xiaoqu-agent-service/src/main/java/me/iiv/agent/mcp/ScopeToolSyncService.java
index ece1aaf..2d02fb4 100644
--- a/xiaoqu-agent-service/src/main/java/me/iiv/agent/mcp/ScopeToolSyncService.java
+++ b/xiaoqu-agent-service/src/main/java/me/iiv/agent/mcp/ScopeToolSyncService.java
@@ -82,8 +82,12 @@ public class ScopeToolSyncService implements ApplicationRunner {
                 if (toolName.isEmpty()) {
                     continue;
                 }
+                // soft_delete 在历史数据里可能是 NULL（建表默认 0 但早期插入未写），
+                // 只按 =0 过滤会把已注册的工具误判为"不存在"而跳过绑定
+                // （2026-10-21 district.paper.statistics.query 即因此未绑上）。
                 Tool tool = toolMapper.selectOne(new LambdaQueryWrapper<Tool>()
-                        .eq(Tool::getName, toolName).eq(Tool::getSoftDelete, 0));
+                        .eq(Tool::getName, toolName)
+                        .and(w -> w.eq(Tool::getSoftDelete, 0).or().isNull(Tool::getSoftDelete)));
                 if (tool == null) {
                     log.warn("scope-tool binding 跳过：工具不存在 name={}", toolName);
                     skipped++;
diff --git a/xiaoqu-agent-service/src/test/java/me/iiv/agent/mcp/ScopeToolSyncServiceTest.java b/xiaoqu-agent-service/src/test/java/me/iiv/agent/mcp/ScopeToolSyncServiceTest.java
index c8c9178..466b356 100644
--- a/xiaoqu-agent-service/src/test/java/me/iiv/agent/mcp/ScopeToolSyncServiceTest.java
+++ b/xiaoqu-agent-service/src/test/java/me/iiv/agent/mcp/ScopeToolSyncServiceTest.java
@@ -65,6 +65,25 @@ class ScopeToolSyncServiceTest {
         verify(scopeToolMapper, times(1)).insert(any(ScopeTool.class));
     }
 
+    @Test
+    void bindsToolWhoseSoftDeleteColumnIsNull() {
+        service.rawBindings = "sync=tool.c";
+        AgentScope scope = new AgentScope();
+        scope.setId(4L);
+        scope.setCode("sync");
+        when(scopeMapper.selectOne(any())).thenReturn(scope);
+        Tool toolC = new Tool();
+        toolC.setId(12L);
+        toolC.setName("tool.c");
+        // softDelete 为 NULL 的历史记录也要能绑上
+        when(toolMapper.selectOne(any())).thenReturn(toolC);
+        when(scopeToolMapper.selectCount(any())).thenReturn(0L);
+
+        service.run(null);
+
+        verify(scopeToolMapper, times(1)).insert(any(ScopeTool.class));
+    }
+
     @Test
     void skipsUnknownScopeWithoutFailing() {
         service.rawBindings = "nope=tool.a";