diff --git a/examples/postman_echo/request_methods/validate_with_functions.yml b/examples/postman_echo/request_methods/validate_with_functions.yml
index 8de9242b..41aca935 100644
--- a/examples/postman_echo/request_methods/validate_with_functions.yml
+++ b/examples/postman_echo/request_methods/validate_with_functions.yml
@@ -25,5 +25,5 @@ teststeps:
         session_foo2: "body.args.foo2"
     validate:
         - eq: ["status_code", 200]
-        - eq: ["body.args.sum_v", "3"]
+        - eq: ["body.args.sum_v", 3]
         - less_than: ["body.args.sum_v", "${sum_two(2, 2)}"]
diff --git a/examples/postman_echo/request_methods/validate_with_variables_test.py b/examples/postman_echo/request_methods/validate_with_variables_test.py
index 14cd2e71..840e5ce1 100644
--- a/examples/postman_echo/request_methods/validate_with_variables_test.py
+++ b/examples/postman_echo/request_methods/validate_with_variables_test.py
@@ -95,4 +95,5 @@ class TestCaseRequestMethodsValidateWithVariables(TestCaseRunner):
 
 
 if __name__ == '__main__':
-    TestCaseRequestMethodsValidateWithVariables().run()
+    runner = TestCaseRequestMethodsValidateWithVariables().run()
+    print(runner.meta_datas)
diff --git a/httprunner/v3/runner.py b/httprunner/v3/runner.py
index 53b27d11..297aac63 100644
--- a/httprunner/v3/runner.py
+++ b/httprunner/v3/runner.py
@@ -1,20 +1,26 @@
 from typing import List
 
-import requests
 from loguru import logger
 
+from httprunner.client import HttpSession
 from httprunner.v3.parser import build_url, parse_data, parse_variables_mapping
 from httprunner.v3.response import ResponseObject
-from httprunner.v3.schema import TestsConfig, TestStep, VariablesMapping
+from httprunner.v3.schema import TestsConfig, TestStep, VariablesMapping, TestCase
 
 
 class TestCaseRunner(object):
 
     config: TestsConfig = {}
     teststeps: List[TestStep] = []
-    session: requests.Session = None
+    session: HttpSession = None
+    meta_datas: List = []
 
-    def with_session(self, s: requests.Session) -> "TestCaseRunner":
+    def init(self, testcase: TestCase) -> "TestCaseRunner":
+        self.config = testcase.config
+        self.teststeps = testcase.teststeps
+        return self
+
+    def with_session(self, s: HttpSession) -> "TestCaseRunner":
         self.session = s
         return self
 
@@ -40,8 +46,8 @@ class TestCaseRunner(object):
         logger.debug(f"request kwargs(raw): {parsed_request_dict}")
 
         # request
-        session = self.session or requests.Session()
-        resp = session.request(method, url, **parsed_request_dict)
+        self.session = self.session or HttpSession()
+        resp = self.session.request(method, url, **parsed_request_dict)
         resp_obj = ResponseObject(resp)
 
         # extract
@@ -59,6 +65,7 @@ class TestCaseRunner(object):
 
     def test_start(self):
         """main entrance"""
+        self.meta_datas.clear()
         session_variables = {}
         for step in self.teststeps:
             # update with config variables
@@ -71,6 +78,10 @@ class TestCaseRunner(object):
             extract_mapping = self.run_step(step)
             # save extracted variables to session variables
             session_variables.update(extract_mapping)
+            # save request & response meta data
+            self.meta_datas.append(self.session.meta_data)
+
+        return self
 
     def run(self):
         """main entrance alias for test_start"""
diff --git a/httprunner/v3/schema/__init__.py b/httprunner/v3/schema/__init__.py
index ae426451..5d75ac71 100644
--- a/httprunner/v3/schema/__init__.py
+++ b/httprunner/v3/schema/__init__.py
@@ -1,6 +1,7 @@
 from enum import Enum
 from typing import Any
-from typing import Dict, List, Text, Union, Callable
+from typing import Dict, Text, Union, Callable
+from typing import List
 
 from pydantic import BaseModel, Field
 from pydantic import HttpUrl
@@ -56,7 +57,27 @@ class Request(BaseModel):
 
 class TestStep(BaseModel):
     name: Name
+    times: int = 1
     request: Request
     variables: VariablesMapping = {}
     extract: Dict[Text, Text] = {}
     validators: Validators = Field([], alias="validate")
+
+
+class TestCase(BaseModel):
+    config: TestsConfig
+    teststeps: List[TestStep]
+
+
+class ProjectMeta(BaseModel):
+    debugtalk_py: Text = ""
+    variables: VariablesMapping = {}
+    functions: FunctionsMapping = {}
+    env: Env = {}
+    PWD: Text
+    test_path: Text
+
+
+class TestsMapping(BaseModel):
+    project_mapping: ProjectMeta    # TODO: rename to project_meta
+    testcases: List[TestCase]