diff --git a/boot/common-framework/src/main/java/com/klaro/acquirecore/framework/TxContext.java b/boot/common-framework/src/main/java/com/klaro/acquirecore/framework/TxContext.java
index 1a56634..35e5443 100644
--- a/boot/common-framework/src/main/java/com/klaro/acquirecore/framework/TxContext.java
+++ b/boot/common-framework/src/main/java/com/klaro/acquirecore/framework/TxContext.java
@@ -1,31 +1,90 @@
 package com.klaro.acquirecore.framework;
 
-import java.util.HashMap;
+import java.io.Serializable;
+import java.time.Instant;
 import java.util.Map;
+import java.util.UUID;
 
 /**
- * 레거시 TxCore {@code TXBUF} (고정 슬롯 키/값 버퍼) 의 Spring 대체 자리표시자.
- *
- * <p>실 전환에서는 요청/응답 DTO(record) 가 정형 필드를 담고, 이 컨텍스트는
- * 서비스 체인({@code tx_call}) 간 전달되는 느슨한 키/값 상태만 보관한다.
+ * Transaction context DTO carrying runtime state across service calls.
+ * Mirrors the C tx_context struct fields.
  */
-public final class TxContext {
+public class TxContext implements Serializable {
 
-    private final Map<String, Object> slots = new HashMap<>();
+    private static final long serialVersionUID = 1L;
 
-    /** TXBUF 필드 설정 (레거시 {@code Fchg} 상당). */
-    public TxContext put(String key, Object value) {
-        slots.put(key, value);
-        return this;
+    private String transactionId;
+    private String serviceName;
+    private TxStatus status;
+    private Instant startedAt;
+    private Instant committedAt;
+    private Map<String, Object> metadata;
+
+    public TxContext() {
+        this.transactionId = UUID.randomUUID().toString();
+        this.status = TxStatus.INITIAL;
+        this.startedAt = Instant.now();
     }
 
-    /** TXBUF 필드 조회 (레거시 {@code Fget} 상당). */
-    public Object get(String key) {
-        return slots.get(key);
+    public TxContext(String serviceName) {
+        this();
+        this.serviceName = serviceName;
     }
 
-    /** 적재된 슬롯 개수. */
-    public int size() {
-        return slots.size();
+    public String getTransactionId() {
+        return transactionId;
+    }
+
+    public void setTransactionId(String transactionId) {
+        this.transactionId = transactionId;
+    }
+
+    public String getServiceName() {
+        return serviceName;
+    }
+
+    public void setServiceName(String serviceName) {
+        this.serviceName = serviceName;
+    }
+
+    public TxStatus getStatus() {
+        return status;
+    }
+
+    public void setStatus(TxStatus status) {
+        this.status = status;
+    }
+
+    public Instant getStartedAt() {
+        return startedAt;
+    }
+
+    public void setStartedAt(Instant startedAt) {
+        this.startedAt = startedAt;
+    }
+
+    public Instant getCommittedAt() {
+        return committedAt;
+    }
+
+    public void setCommittedAt(Instant committedAt) {
+        this.committedAt = committedAt;
+    }
+
+    public Map<String, Object> getMetadata() {
+        return metadata;
+    }
+
+    public void setMetadata(Map<String, Object> metadata) {
+        this.metadata = metadata;
+    }
+
+    public void markCommitted() {
+        this.status = TxStatus.COMMITTED;
+        this.committedAt = Instant.now();
+    }
+
+    public void markRolledBack() {
+        this.status = TxStatus.ROLLED_BACK;
     }
 }