diff --git a/jerry-core/debugger/debugger.c b/jerry-core/debugger/debugger.c
index bb40071ce..649f36571 100644
--- a/jerry-core/debugger/debugger.c
+++ b/jerry-core/debugger/debugger.c
@@ -40,7 +40,7 @@ typedef struct
  */
 JERRY_STATIC_ASSERT (JERRY_DEBUGGER_MESSAGES_OUT_MAX_COUNT == 32
                      && JERRY_DEBUGGER_MESSAGES_IN_MAX_COUNT == 21
-                     && JERRY_DEBUGGER_VERSION == 7,
+                     && JERRY_DEBUGGER_VERSION == 8,
                      debugger_version_correlates_to_message_type_count);
 
 /**
@@ -529,12 +529,17 @@ jerry_debugger_send_eval (const lit_utf8_byte_t *eval_string_p, /**< evaluated s
   JERRY_ASSERT (!(JERRY_CONTEXT (debugger_flags) & JERRY_DEBUGGER_VM_IGNORE));
 
   JERRY_DEBUGGER_SET_FLAGS (JERRY_DEBUGGER_VM_IGNORE);
-  ecma_value_t result = ecma_op_eval_chars_buffer (eval_string_p + 1, eval_string_size - 1, ECMA_PARSE_DIRECT_EVAL);
+
+  uint32_t chain_index;
+  memcpy (&chain_index, eval_string_p, sizeof (uint32_t));
+  uint32_t parse_opts = ECMA_PARSE_DIRECT_EVAL | (chain_index << ECMA_PARSE_CHAIN_INDEX_SHIFT);
+
+  ecma_value_t result = ecma_op_eval_chars_buffer (eval_string_p + 5, eval_string_size - 5, parse_opts);
   JERRY_DEBUGGER_CLEAR_FLAGS (JERRY_DEBUGGER_VM_IGNORE);
 
   if (!ECMA_IS_VALUE_ERROR (result))
   {
-    if (eval_string_p[0] != JERRY_DEBUGGER_EVAL_EVAL)
+    if (eval_string_p[4] != JERRY_DEBUGGER_EVAL_EVAL)
     {
       JERRY_DEBUGGER_SET_FLAGS (JERRY_DEBUGGER_VM_EXCEPTION_THROWN);
       JERRY_CONTEXT (error_value) = result;
@@ -543,7 +548,7 @@ jerry_debugger_send_eval (const lit_utf8_byte_t *eval_string_p, /**< evaluated s
       JERRY_DEBUGGER_SET_FLAGS (JERRY_DEBUGGER_VM_STOP);
       JERRY_CONTEXT (debugger_stop_context) = NULL;
 
-      if (eval_string_p[0] == JERRY_DEBUGGER_EVAL_THROW)
+      if (eval_string_p[4] == JERRY_DEBUGGER_EVAL_THROW)
       {
         JERRY_CONTEXT (status_flags) |= ECMA_STATUS_EXCEPTION;
       }
@@ -918,7 +923,7 @@ jerry_debugger_process_message (const uint8_t *recv_buffer_p, /**< pointer to th
 
     case JERRY_DEBUGGER_EVAL:
     {
-      if (message_size < sizeof (jerry_debugger_receive_eval_first_t) + 1)
+      if (message_size < sizeof (jerry_debugger_receive_eval_first_t) + 5)
       {
         JERRY_ERROR_MSG ("Invalid message size\n");
         jerry_debugger_transport_close ();
diff --git a/jerry-core/ecma/base/ecma-globals.h b/jerry-core/ecma/base/ecma-globals.h
index dfe1abf1d..375e7d17d 100644
--- a/jerry-core/ecma/base/ecma-globals.h
+++ b/jerry-core/ecma/base/ecma-globals.h
@@ -80,10 +80,18 @@ typedef enum
   ECMA_TYPE___MAX = ECMA_TYPE_ERROR /** highest value for ecma types */
 } ecma_type_t;
 
+#ifdef JERRY_DEBUGGER
+/**
+ * Shift for scope chain index part in ecma_parse_opts
+ */
+#define ECMA_PARSE_CHAIN_INDEX_SHIFT 16
+#endif
+
 /**
  * Option flags for script parsing.
  * Note:
  *      The enum members must be kept in sync with parser_general_flags_t
+ *      The last 16 bits are reserved for scope chain index
  */
 typedef enum
 {
diff --git a/jerry-core/include/jerryscript-debugger.h b/jerry-core/include/jerryscript-debugger.h
index 26a074961..735d61e16 100644
--- a/jerry-core/include/jerryscript-debugger.h
+++ b/jerry-core/include/jerryscript-debugger.h
@@ -31,7 +31,7 @@ extern "C"
 /**
  * JerryScript debugger protocol version.
  */
-#define JERRY_DEBUGGER_VERSION (7)
+#define JERRY_DEBUGGER_VERSION (8)
 
 /**
  * Types for the client source wait and run method.
diff --git a/jerry-core/vm/vm.c b/jerry-core/vm/vm.c
index b8567bd4f..71a5dfaf6 100644
--- a/jerry-core/vm/vm.c
+++ b/jerry-core/vm/vm.c
@@ -252,6 +252,26 @@ vm_run_eval (ecma_compiled_code_t *bytecode_data_p, /**< byte-code data */
   {
     this_binding = ecma_copy_value (JERRY_CONTEXT (vm_top_context_p)->this_binding);
     lex_env_p = JERRY_CONTEXT (vm_top_context_p)->lex_env_p;
+
+#ifdef JERRY_DEBUGGER
+    uint32_t chain_index = parse_opts >> ECMA_PARSE_CHAIN_INDEX_SHIFT;
+
+    while (chain_index != 0)
+    {
+      lex_env_p = ecma_get_lex_env_outer_reference (lex_env_p);
+
+      if (JERRY_UNLIKELY (lex_env_p == NULL))
+      {
+        return ecma_raise_range_error (ECMA_ERR_MSG ("Invalid scope chain index for eval"));
+      }
+
+      if ((ecma_get_lex_env_type (lex_env_p) == ECMA_LEXICAL_ENVIRONMENT_THIS_OBJECT_BOUND)
+          || (ecma_get_lex_env_type (lex_env_p) == ECMA_LEXICAL_ENVIRONMENT_DECLARATIVE))
+      {
+        chain_index--;
+      }
+    }
+#endif
   }
   else
   {
diff --git a/jerry-debugger/jerry_client.py b/jerry-debugger/jerry_client.py
index cc1777245..e56ca96c6 100755
--- a/jerry-debugger/jerry_client.py
+++ b/jerry-debugger/jerry_client.py
@@ -171,6 +171,29 @@ class DebuggerPrompt(Cmd):
         self.stop = True
     do_e = do_eval
 
+    def do_eval_at(self, args):
+        """ Evaluate JavaScript source code at a scope chain level """
+
+        code = ''
+        index = 0
+        try:
+            args = args.split(" ", 1)
+
+            index = int(args[0])
+
+            if len(args) == 2:
+                code = args[1]
+
+            if index < 0 or index > 65535:
+                raise ValueError("Invalid scope chain index: %d (must be between 0 and 65535)" % index)
+
+        except ValueError as val_errno:
+            print("Error: %s" % (val_errno))
+            return
+
+        self.debugger.eval_at(code, index)
+        self.stop = True
+
     def do_memstats(self, _):
         """ Memory statistics """
         self.debugger.memstats()
diff --git a/jerry-debugger/jerry_client_ws.py b/jerry-debugger/jerry_client_ws.py
index 203590b7a..defee5b7d 100644
--- a/jerry-debugger/jerry_client_ws.py
+++ b/jerry-debugger/jerry_client_ws.py
@@ -24,7 +24,7 @@ import struct
 import sys
 
 # Expected debugger protocol version.
-JERRY_DEBUGGER_VERSION = 7
+JERRY_DEBUGGER_VERSION = 8
 
 # Messages sent by the server to client.
 JERRY_DEBUGGER_CONFIGURATION = 1
@@ -553,6 +553,10 @@ class JerryDebugger(object):
         self._send_string(JERRY_DEBUGGER_EVAL_EVAL + code, JERRY_DEBUGGER_EVAL)
         self.prompt = False
 
+    def eval_at(self, code, index):
+        self._send_string(JERRY_DEBUGGER_EVAL_EVAL + code, JERRY_DEBUGGER_EVAL, index)
+        self.prompt = False
+
     def throw(self, code):
         self._send_string(JERRY_DEBUGGER_EVAL_THROW + code, JERRY_DEBUGGER_EVAL)
         self.prompt = False
@@ -587,12 +591,18 @@ class JerryDebugger(object):
 
         return "Stop at exception disabled\n"
 
-    def _send_string(self, args, message_type):
-        size = len(args)
+    def _send_string(self, args, message_type, index=0):
 
         # 1: length of type byte
         # 4: length of an uint32 value
         message_header = 1 + 4
+
+        # Add scope chain index
+        if message_type == JERRY_DEBUGGER_EVAL:
+            args = struct.pack(self.byte_order + "I", index) + args
+
+        size = len(args)
+
         max_fragment = min(self.max_message_size - message_header, size)
 
         message = struct.pack(self.byte_order + "BBIBI",
@@ -601,6 +611,7 @@ class JerryDebugger(object):
                               0,
                               message_type,
                               size)
+
         if size == max_fragment:
             self.send_message(message + args)
             return
diff --git a/tests/debugger/do_eval_at.cmd b/tests/debugger/do_eval_at.cmd
new file mode 100644
index 000000000..85bb5d431
--- /dev/null
+++ b/tests/debugger/do_eval_at.cmd
@@ -0,0 +1,20 @@
+eval_at 0
+eval_at 0 b
+n
+eval_at 0 b
+b do_eval_at.js:20
+n
+scopes
+eval_at 0 b
+eval_at 1 b
+eval_at 0 b=20
+eval_at 1 b=100
+n
+eval_at 0 a
+scopes
+eval_at 0 b
+eval_at -1 b
+eval_at 65536 b
+eval_at b
+eval_at 200
+c
diff --git a/tests/debugger/do_eval_at.expected b/tests/debugger/do_eval_at.expected
new file mode 100644
index 000000000..b0db16fe3
--- /dev/null
+++ b/tests/debugger/do_eval_at.expected
@@ -0,0 +1,44 @@
+Connecting to: localhost:5001
+Stopped at tests/debugger/do_eval_at.js:15
+(jerry-debugger) eval_at 0
+undefined
+(jerry-debugger) eval_at 0 b
+undefined
+(jerry-debugger) n
+Stopped at tests/debugger/do_eval_at.js:23
+(jerry-debugger) eval_at 0 b
+2
+(jerry-debugger) b do_eval_at.js:20
+Breakpoint 1 at tests/debugger/do_eval_at.js:20 (in f() at line:17, col:1)
+(jerry-debugger) n
+Stopped at breakpoint:1 tests/debugger/do_eval_at.js:20 (in f() at line:17, col:1)
+(jerry-debugger) scopes
+level | type   
+0     | local  
+1     | global 
+(jerry-debugger) eval_at 0 b
+6
+(jerry-debugger) eval_at 1 b
+2
+(jerry-debugger) eval_at 0 b=20
+20
+(jerry-debugger) eval_at 1 b=100
+100
+(jerry-debugger) n
+Stopped at tests/debugger/do_eval_at.js:25
+(jerry-debugger) eval_at 0 a
+23
+(jerry-debugger) scopes
+level | type   
+0     | global 
+(jerry-debugger) eval_at 0 b
+100
+(jerry-debugger) eval_at -1 b
+Error: Invalid scope chain index: -1 (must be between 0 and 65535)
+(jerry-debugger) eval_at 65536 b
+Error: Invalid scope chain index: 65536 (must be between 0 and 65535)
+(jerry-debugger) eval_at b
+Error: invalid literal for int() with base 10: 'b'
+(jerry-debugger) eval_at 200
+Uncaught exception: Error
+(jerry-debugger) c
diff --git a/tests/debugger/do_eval_at.js b/tests/debugger/do_eval_at.js
new file mode 100644
index 000000000..80eb998fe
--- /dev/null
+++ b/tests/debugger/do_eval_at.js
@@ -0,0 +1,25 @@
+// Copyright JS Foundation and other contributors, http://js.foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+var b = 2;
+
+function f(a)
+{
+  var b = 6;
+  return a + b;
+}
+
+var a = f(3);
+
+null;
diff --git a/tests/debugger/do_help.expected b/tests/debugger/do_help.expected
index 60fb65430..26cde448b 100644
--- a/tests/debugger/do_help.expected
+++ b/tests/debugger/do_help.expected
@@ -4,9 +4,10 @@ Stopped at tests/debugger/do_help.js:15
 
 Documented commands (type help <topic>):
 ========================================
-abort      bt        display  exception  list      next     s       src      
-b          c         dump     f          memstats  quit     scopes  step     
-backtrace  continue  e        finish     ms        res      scroll  throw    
-break      delete    eval     help       n         restart  source  variables
+abort      c         e          finish    n        s       step     
+b          continue  eval       help      next     scopes  throw    
+backtrace  delete    eval_at    list      quit     scroll  variables
+break      display   exception  memstats  res      source
+bt         dump      f          ms        restart  src   
 
 (jerry-debugger) quit