diff --git a/minimal_example.py b/minimal_example.py
new file mode 100644
index 0000000..8010054
--- /dev/null
+++ b/minimal_example.py
@@ -0,0 +1,133 @@
+import json
+import os
+import re
+import subprocess
+import time
+
+SLEEP = 1.5
+# set the URLs of each website, we use the demo sites as an example
+os.environ["SHOPPING"] = "http://ec2-3-131-244-37.us-east-2.compute.amazonaws.com:7770"
+os.environ["SHOPPING_ADMIN"] = "http://ec2-3-131-244-37.us-east-2.compute.amazonaws.com:7780/admin"
+os.environ["REDDIT"] = "http://ec2-3-131-244-37.us-east-2.compute.amazonaws.com:9999"
+os.environ["GITLAB"] = "http://ec2-3-131-244-37.us-east-2.compute.amazonaws.com:8023"
+os.environ["MAP"] = "http://ec2-3-131-244-37.us-east-2.compute.amazonaws.com:3000"
+os.environ["WIKIPEDIA"] = "http://ec2-3-131-244-37.us-east-2.compute.amazonaws.com:8888/wikipedia_en_all_maxi_2022-05/A/User:The_other_Kiwix_guy/Landing"
+os.environ["HOMEPAGE"] = "PASS" # The home page is not currently hosted in the demo site
+print("Done setting up URLs")
+
+# First, run `python scripts/generate_test_data.py` to generate the config files
+p = subprocess.run(["python", "scripts/generate_test_data.py"], capture_output=True)
+
+# It will generate individual config file for each test example in config_files
+assert os.path.exists("config_files/0.json")
+
+# Make sure the URLs in the config files are replaced properly
+with open("config_files/0.json", "r") as f:
+    config = json.load(f)
+    assert os.environ["SHOPPING_ADMIN"] in config["start_url"], (os.environ["SHOPPING_ADMIN"], config["start_url"])
+
+print("Done generating config files with the correct URLs")
+
+# run bash prepare.sh to save all account cookies
+# subprocess.run(["bash", "prepare.sh"])
+# print("Done saving account cookies")
+
+# Init an environment
+from browser_env import (
+    Action,
+    ActionTypes,
+    ObservationMetadata,
+    ScriptBrowserEnv,
+    StateInfo,
+    action2str,
+    create_id_based_action,
+    create_stop_action,
+)
+
+from agent.utils import Trajectory
+from evaluation_harness.evaluators import evaluator_router
+
+# Init the environment
+env = ScriptBrowserEnv(
+    headless=False,
+    slow_mo=100,
+    observation_type="accessibility_tree",
+    current_viewport_only=True,
+    viewport_size={
+        "width": 1280,
+        "height": 720
+    })
+
+# example 156 as an example
+config_file = "config_files/156.json"
+# maintain a trajectory 
+trajectory: Trajectory = []
+
+# set the environment for the current example
+obs, info = env.reset(options={"config_file": config_file})
+actree_obs = obs["text"]
+print(actree_obs)
+
+# You should see some output like this:
+"""
+[4] RootWebArea 'Projects · Dashboard · GitLab' focused: True
+        [12] link 'Skip to content'
+        [28] link 'Dashboard'
+        [2266] button '' hasPopup: menu expanded: False
+        [63] textbox 'Search GitLab' required: False
+        [61] generic 'Use the shortcut key <kbd>/</kbd> to start a search'
+        [79] link 'Create new...'
+        [95] link 'Issues'
+                [97] generic '13 assigned issues'
+        [101] link 'Merge requests'
+                [104] generic '8 merge requests'"""
+
+# save the state info to the trajectory
+state_info: StateInfo = {"observation": obs, "info": info}
+trajectory.append(state_info)
+                
+# Now let's try to perform the action of clicking the "Merge request" link
+# As the element ID is dynamic each time, we use regex to match the element as the demo
+match = re.search(r"\[(\d+)\] link 'Merge requests'", actree_obs).group(1)
+# Create the action click [ELEMENT_ID]
+click_action = create_id_based_action(f"click [{match}]")
+# Add the action to the trajectory
+trajectory.append(click_action)
+
+# Step and get the new observation
+obs, _, terminated, _, info = env.step(click_action)
+# New observation
+actree_obs = obs["text"]
+print(actree_obs)
+time.sleep(SLEEP)
+
+state_info = {"observation": obs, "info": info}
+trajectory.append(state_info)
+
+# Next click "assign to you"
+match = re.search(r"\[(\d+)\] link 'Assigned to you", actree_obs).group(1)
+click_action = create_id_based_action(f"click [{match}]")
+trajectory.append(click_action)
+
+obs, _, terminated, _, info = env.step(click_action)
+actree_obs = obs["text"]
+print(actree_obs)
+time.sleep(SLEEP)
+state_info = {"observation": obs, "info": info}
+trajectory.append(state_info)
+
+# add a stop action to mark the end of the trajectory
+trajectory.append(create_stop_action(""))
+
+
+# Demo evaluation 
+evaluator = evaluator_router(config_file)
+score = evaluator(
+    trajectory=trajectory,
+    config_file=config_file,
+    page=env.page,
+    client=env.get_page_client(env.page),
+)
+
+# as we manually perform the task, the task should be judged as correct
+assert score == 1.0