diff --git a/.github/workflows/contrib-openai.yml b/.github/workflows/contrib-openai.yml
index a8cedb29a3c5..6443aa62de69 100644
--- a/.github/workflows/contrib-openai.yml
+++ b/.github/workflows/contrib-openai.yml
@@ -4,7 +4,7 @@
 name: OpenAI4ContribTests
 
 on:
-  pull_request_target:
+  pull_request:
     branches: ['main']
     paths:
       - 'autogen/**'
@@ -173,7 +173,7 @@ jobs:
           AZURE_OPENAI_API_BASE: ${{ secrets.AZURE_OPENAI_API_BASE }}
           OAI_CONFIG_LIST: ${{ secrets.OAI_CONFIG_LIST }}
         run: |
-          coverage run -a -m pytest test/agentchat/contrib/test_teachable_agent.py
+          coverage run -a -m pytest test/agentchat/contrib/capabilities/test_teachable_agent.py
           coverage xml
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v3
diff --git a/.github/workflows/contrib-tests.yml b/.github/workflows/contrib-tests.yml
index b82fe1baf032..c4d698655d9b 100644
--- a/.github/workflows/contrib-tests.yml
+++ b/.github/workflows/contrib-tests.yml
@@ -172,7 +172,7 @@ jobs:
       - name: Coverage
         run: |
           pip install coverage>=5.3
-          coverage run -a -m pytest test/agentchat/contrib/test_teachable_agent.py --skip-openai
+          coverage run -a -m pytest test/agentchat/contrib/capabilities/test_teachable_agent.py --skip-openai
           coverage xml
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v3
diff --git a/.github/workflows/deploy-website.yml b/.github/workflows/deploy-website.yml
index c9c7deede620..13180d504ba7 100644
--- a/.github/workflows/deploy-website.yml
+++ b/.github/workflows/deploy-website.yml
@@ -37,7 +37,7 @@ jobs:
       - name: pydoc-markdown install
         run: |
           python -m pip install --upgrade pip
-          pip install pydoc-markdown pyyaml colored
+          pip install pydoc-markdown pyyaml termcolor
       - name: pydoc-markdown run
         run: |
           pydoc-markdown
@@ -83,7 +83,7 @@ jobs:
       - name: pydoc-markdown install
         run: |
           python -m pip install --upgrade pip
-          pip install pydoc-markdown pyyaml colored
+          pip install pydoc-markdown pyyaml termcolor
       - name: pydoc-markdown run
         run: |
           pydoc-markdown
diff --git a/.github/workflows/openai.yml b/.github/workflows/openai.yml
index be2840c2dc67..2018aa8e6c0b 100644
--- a/.github/workflows/openai.yml
+++ b/.github/workflows/openai.yml
@@ -4,7 +4,7 @@
 name: OpenAI
 
 on:
-  pull_request_target:
+  pull_request:
     branches: ["main"]
     paths:
       - "autogen/**"
diff --git a/autogen/agentchat/chat.py b/autogen/agentchat/chat.py
index 6d2858c18c2e..8c9ed1ee2ef3 100644
--- a/autogen/agentchat/chat.py
+++ b/autogen/agentchat/chat.py
@@ -3,15 +3,9 @@
 from collections import defaultdict
 from typing import Dict, List, Any, Set, Tuple
 from dataclasses import dataclass
-from .utils import consolidate_chat_info
 import warnings
-
-try:
-    from termcolor import colored
-except ImportError:
-
-    def colored(x, *args, **kwargs):
-        return x
+from termcolor import colored
+from .utils import consolidate_chat_info
 
 
 logger = logging.getLogger(__name__)
diff --git a/autogen/agentchat/contrib/capabilities/context_handling.py b/autogen/agentchat/contrib/capabilities/context_handling.py
index ebbc00e1097c..1510ae5fcd64 100644
--- a/autogen/agentchat/contrib/capabilities/context_handling.py
+++ b/autogen/agentchat/contrib/capabilities/context_handling.py
@@ -25,10 +25,9 @@ class TransformChatHistory:
     2. Second, it limits the number of message to keep
     3. Third, it limits the total number of tokens in the chat history
 
-    Args:
-        max_tokens_per_message (Optional[int]): Maximum number of tokens to keep in each message.
-        max_messages (Optional[int]): Maximum number of messages to keep in the context.
-        max_tokens (Optional[int]): Maximum number of tokens to keep in the context.
+    When adding this capability to an agent, the following are modified:
+    - A hook is added to the hookable method `process_all_messages_before_reply` to transform the received messages for possible truncation.
+    Not modifying the stored message history.
     """
 
     def __init__(
@@ -38,6 +37,12 @@ def __init__(
         max_messages: Optional[int] = None,
         max_tokens: Optional[int] = None,
     ):
+        """
+        Args:
+            max_tokens_per_message (Optional[int]): Maximum number of tokens to keep in each message.
+            max_messages (Optional[int]): Maximum number of messages to keep in the context.
+            max_tokens (Optional[int]): Maximum number of tokens to keep in the context.
+        """
         self.max_tokens_per_message = max_tokens_per_message if max_tokens_per_message else sys.maxsize
         self.max_messages = max_messages if max_messages else sys.maxsize
         self.max_tokens = max_tokens if max_tokens else sys.maxsize
diff --git a/autogen/agentchat/contrib/capabilities/teachability.py b/autogen/agentchat/contrib/capabilities/teachability.py
index e90612fa53b2..9e18f99a3454 100644
--- a/autogen/agentchat/contrib/capabilities/teachability.py
+++ b/autogen/agentchat/contrib/capabilities/teachability.py
@@ -1,18 +1,12 @@
 import os
-from autogen.agentchat.assistant_agent import ConversableAgent
-from autogen.agentchat.contrib.capabilities.agent_capability import AgentCapability
-from autogen.agentchat.contrib.text_analyzer_agent import TextAnalyzerAgent
-from typing import Dict, Optional, Union, List, Tuple, Any
+from typing import Dict, Optional, Union
 import chromadb
 from chromadb.config import Settings
 import pickle
-
-try:
-    from termcolor import colored
-except ImportError:
-
-    def colored(x, *args, **kwargs):
-        return x
+from autogen.agentchat.assistant_agent import ConversableAgent
+from autogen.agentchat.contrib.capabilities.agent_capability import AgentCapability
+from autogen.agentchat.contrib.text_analyzer_agent import TextAnalyzerAgent
+from autogen.agentchat.conversable_agent import colored
 
 
 class Teachability(AgentCapability):
@@ -23,6 +17,13 @@ class Teachability(AgentCapability):
     To make any conversable agent teachable, instantiate both the agent and the Teachability class,
     then pass the agent to teachability.add_to_agent(agent).
     Note that teachable agents in a group chat must be given unique path_to_db_dir values.
+
+    When adding Teachability to an agent, the following are modified:
+    - The agent's system message is appended with a note about the agent's new ability.
+    - A hook is added to the agent's `process_last_received_message` hookable method,
+    and the hook potentially modifies the last of the received messages to include earlier teachings related to the message.
+    Added teachings do not propagate into the stored message history.
+    If new user teachings are detected, they are added to new memos in the vector database.
     """
 
     def __init__(
diff --git a/autogen/agentchat/contrib/llava_agent.py b/autogen/agentchat/contrib/llava_agent.py
index 376c6c88f249..c26f576ab398 100644
--- a/autogen/agentchat/contrib/llava_agent.py
+++ b/autogen/agentchat/contrib/llava_agent.py
@@ -1,25 +1,14 @@
 import json
 import logging
-import os
-import pdb
-import re
-from typing import Any, Dict, List, Optional, Tuple, Union
-
+from typing import List, Optional, Tuple
 import replicate
 import requests
-from regex import R
 
 from autogen.agentchat.agent import Agent
 from autogen.agentchat.contrib.img_utils import get_image_data, llava_formatter
 from autogen.agentchat.contrib.multimodal_conversable_agent import MultimodalConversableAgent
 from autogen.code_utils import content_str
-
-try:
-    from termcolor import colored
-except ImportError:
-
-    def colored(x, *args, **kwargs):
-        return x
+from autogen.agentchat.conversable_agent import colored
 
 
 logger = logging.getLogger(__name__)
diff --git a/autogen/agentchat/contrib/multimodal_conversable_agent.py b/autogen/agentchat/contrib/multimodal_conversable_agent.py
index a978e8fb722d..2355c630f9cc 100644
--- a/autogen/agentchat/contrib/multimodal_conversable_agent.py
+++ b/autogen/agentchat/contrib/multimodal_conversable_agent.py
@@ -1,26 +1,16 @@
 import copy
-from typing import Any, Callable, Dict, List, Optional, Tuple, Union
+from typing import Dict, List, Optional, Tuple, Union
 
 from autogen import OpenAIWrapper
 from autogen.agentchat import Agent, ConversableAgent
 from autogen.agentchat.contrib.img_utils import (
-    convert_base64_to_data_uri,
     gpt4v_formatter,
     message_formatter_pil_to_b64,
-    pil_to_data_uri,
 )
+from autogen.code_utils import content_str
 
 from ..._pydantic import model_dump
 
-try:
-    from termcolor import colored
-except ImportError:
-
-    def colored(x, *args, **kwargs):
-        return x
-
-
-from autogen.code_utils import content_str
 
 DEFAULT_LMM_SYS_MSG = """You are a helpful AI assistant."""
 DEFAULT_MODEL = "gpt-4-vision-preview"
diff --git a/autogen/agentchat/contrib/retrieve_user_proxy_agent.py b/autogen/agentchat/contrib/retrieve_user_proxy_agent.py
index facb64d07efa..b6ec63630964 100644
--- a/autogen/agentchat/contrib/retrieve_user_proxy_agent.py
+++ b/autogen/agentchat/contrib/retrieve_user_proxy_agent.py
@@ -1,4 +1,6 @@
 import re
+from typing import Callable, Dict, Optional, Union, List, Tuple, Any
+from IPython import get_ipython
 
 try:
     import chromadb
@@ -10,16 +12,7 @@
 from autogen.token_count_utils import count_token
 from autogen.code_utils import extract_code
 from autogen import logger
-
-from typing import Callable, Dict, Optional, Union, List, Tuple, Any
-from IPython import get_ipython
-
-try:
-    from termcolor import colored
-except ImportError:
-
-    def colored(x, *args, **kwargs):
-        return x
+from autogen.agentchat.conversable_agent import colored
 
 
 PROMPT_DEFAULT = """You're a retrieve augmented chatbot. You answer user's questions based on your own knowledge and the
diff --git a/autogen/coding/local_commandline_code_executor.py b/autogen/coding/local_commandline_code_executor.py
index 25f4e5ebe4f5..0ed4ce1ae828 100644
--- a/autogen/coding/local_commandline_code_executor.py
+++ b/autogen/coding/local_commandline_code_executor.py
@@ -3,21 +3,14 @@
 import uuid
 import warnings
 from typing import Any, ClassVar, List, Optional
-
 from pydantic import BaseModel, Field, field_validator
 
+from autogen.agentchat.conversable_agent import colored
 from ..agentchat.agent import LLMAgent
 from ..code_utils import execute_code
 from .base import CodeBlock, CodeExtractor, CodeResult
 from .markdown_code_extractor import MarkdownCodeExtractor
 
-try:
-    from termcolor import colored
-except ImportError:
-
-    def colored(x: Any, *args: Any, **kwargs: Any) -> str:  # type: ignore[misc]
-        return x  # type: ignore[no-any-return]
-
 
 __all__ = (
     "LocalCommandlineCodeExecutor",
diff --git a/notebook/agentchat_teachability.ipynb b/notebook/agentchat_teachability.ipynb
index 0f9550bd7b03..3785f01fe93f 100644
--- a/notebook/agentchat_teachability.ipynb
+++ b/notebook/agentchat_teachability.ipynb
@@ -161,14 +161,6 @@
     "# Now add the Teachability capability to the agent.\n",
     "teachability.add_to_agent(teachable_agent)\n",
     "\n",
-    "try:\n",
-    "    from termcolor import colored\n",
-    "except ImportError:\n",
-    "\n",
-    "    def colored(x, *args, **kwargs):\n",
-    "        return x\n",
-    "\n",
-    "\n",
     "# Instantiate a UserProxyAgent to represent the user. But in this notebook, all user input will be simulated.\n",
     "user = UserProxyAgent(\n",
     "    name=\"user\",\n",
diff --git a/test/agentchat/contrib/chat_with_teachable_agent.py b/test/agentchat/contrib/capabilities/chat_with_teachable_agent.py
similarity index 93%
rename from test/agentchat/contrib/chat_with_teachable_agent.py
rename to test/agentchat/contrib/capabilities/chat_with_teachable_agent.py
index 44449091a42b..66d61386d615 100755
--- a/test/agentchat/contrib/chat_with_teachable_agent.py
+++ b/test/agentchat/contrib/capabilities/chat_with_teachable_agent.py
@@ -1,24 +1,16 @@
 #!/usr/bin/env python3 -m pytest
 
+import os
+import sys
+from termcolor import colored
 from autogen import UserProxyAgent, config_list_from_json
 from autogen.agentchat.contrib.capabilities.teachability import Teachability
 from autogen import ConversableAgent
 
-import os
-import sys
-
-sys.path.append(os.path.join(os.path.dirname(__file__), ".."))
+sys.path.append(os.path.join(os.path.dirname(__file__), "../.."))
 from test_assistant_agent import OAI_CONFIG_LIST, KEY_LOC  # noqa: E402
 
 
-try:
-    from termcolor import colored
-except ImportError:
-
-    def colored(x, *args, **kwargs):
-        return x
-
-
 # Specify the model to use. GPT-3.5 is less reliable than GPT-4 at learning from user input.
 filter_dict = {"model": ["gpt-4-0125-preview"]}
 # filter_dict = {"model": ["gpt-3.5-turbo-1106"]}
diff --git a/test/agentchat/contrib/capabilities/test_context_handling.py b/test/agentchat/contrib/capabilities/test_context_handling.py
index d1692cc4b7ff..6d7a774118de 100755
--- a/test/agentchat/contrib/capabilities/test_context_handling.py
+++ b/test/agentchat/contrib/capabilities/test_context_handling.py
@@ -10,7 +10,7 @@
 
 # from test_assistant_agent import KEY_LOC, OAI_CONFIG_LIST
 
-sys.path.append(os.path.join(os.path.dirname(__file__), ".."))
+sys.path.append(os.path.join(os.path.dirname(__file__), "../../.."))
 from conftest import skip_openai  # noqa: E402
 
 sys.path.append(os.path.join(os.path.dirname(__file__), "..", ".."))
diff --git a/test/agentchat/contrib/test_teachable_agent.py b/test/agentchat/contrib/capabilities/test_teachable_agent.py
similarity index 96%
rename from test/agentchat/contrib/test_teachable_agent.py
rename to test/agentchat/contrib/capabilities/test_teachable_agent.py
index e12921379238..44904b26d362 100755
--- a/test/agentchat/contrib/test_teachable_agent.py
+++ b/test/agentchat/contrib/capabilities/test_teachable_agent.py
@@ -3,28 +3,21 @@
 import pytest
 import os
 import sys
+from termcolor import colored
 from autogen import ConversableAgent, config_list_from_json
 
-sys.path.append(os.path.join(os.path.dirname(__file__), "../.."))
+sys.path.append(os.path.join(os.path.dirname(__file__), "../../.."))
 from conftest import skip_openai  # noqa: E402
 
-sys.path.append(os.path.join(os.path.dirname(__file__), ".."))
+sys.path.append(os.path.join(os.path.dirname(__file__), "../.."))
 from test_assistant_agent import OAI_CONFIG_LIST, KEY_LOC  # noqa: E402
 
 try:
-    from openai import OpenAI
     from autogen.agentchat.contrib.capabilities.teachability import Teachability
 except ImportError:
     skip = True
 else:
-    skip = False or skip_openai
-
-try:
-    from termcolor import colored
-except ImportError:
-
-    def colored(x, *args, **kwargs):
-        return x
+    skip = skip_openai
 
 
 # Specify the model to use by uncommenting one of the following lines.
@@ -141,7 +134,7 @@ def use_task_advice_pair_phrasing():
 
 @pytest.mark.skipif(
     skip,
-    reason="do not run if dependency is not installed",
+    reason="do not run if dependency is not installed or requested to skip",
 )
 def test_teachability_code_paths():
     """Runs this file's unit tests."""
@@ -172,7 +165,7 @@ def test_teachability_code_paths():
 
 @pytest.mark.skipif(
     skip,
-    reason="do not run if dependency is not installed",
+    reason="do not run if dependency is not installed or requested to skip",
 )
 def test_teachability_accuracy():
     """A very cheap and fast test of teachability accuracy."""
diff --git a/website/process_notebooks.py b/website/process_notebooks.py
index 56f1f190abb4..2fd70a19479b 100755
--- a/website/process_notebooks.py
+++ b/website/process_notebooks.py
@@ -14,12 +14,10 @@
 import typing
 import concurrent.futures
 import os
-
-from typing import Any, Dict, Optional, Tuple, Union
+from typing import Dict, Optional, Tuple, Union
 from dataclasses import dataclass
-
-
 from multiprocessing import current_process
+from termcolor import colored
 
 try:
     import yaml
@@ -27,7 +25,6 @@
     print("pyyaml not found.\n\nPlease install pyyaml:\n\tpip install pyyaml\n")
     sys.exit(1)
 
-
 try:
     import nbclient
     from nbclient.client import (
@@ -49,14 +46,6 @@
         print("test won't work without nbclient")
 
 
-try:
-    from termcolor import colored
-except ImportError:
-
-    def colored(x, *args, **kwargs):
-        return x
-
-
 class Result:
     def __init__(self, returncode: int, stdout: str, stderr: str):
         self.returncode = returncode