diff --git a/claude-agent-sdk/app_oauth.py b/claude-agent-sdk/app_oauth.py
index edf0730..6728e7d 100644
--- a/claude-agent-sdk/app_oauth.py
+++ b/claude-agent-sdk/app_oauth.py
@@ -2,6 +2,7 @@
 import logging
 import os
 from pathlib import Path
+from urllib.parse import urljoin
 
 from dotenv import load_dotenv
 from slack_bolt.async_app import AsyncApp
@@ -120,4 +121,8 @@ async def _authorize_with_fallback_bot_token(
 
 if __name__ == "__main__":
     port = int(os.environ.get("PORT", 3000))
+    redirect_uri = os.environ.get("SLACK_REDIRECT_URI", "")
+    if redirect_uri:
+        install_url = urljoin(redirect_uri, "/slack/install")
+        logger.info("Connect the Slack MCP Server: %s", install_url)
     app.start(port=port)
diff --git a/openai-agents-sdk/app_oauth.py b/openai-agents-sdk/app_oauth.py
index b7bfd38..d11e8de 100644
--- a/openai-agents-sdk/app_oauth.py
+++ b/openai-agents-sdk/app_oauth.py
@@ -2,6 +2,7 @@
 import logging
 import os
 from pathlib import Path
+from urllib.parse import urljoin
 
 from dotenv import load_dotenv
 from slack_bolt import App
@@ -120,4 +121,8 @@ def _authorize_with_fallback_bot_token(
 
 if __name__ == "__main__":
     port = int(os.environ.get("PORT", 3000))
+    redirect_uri = os.environ.get("SLACK_REDIRECT_URI", "")
+    if redirect_uri:
+        install_url = urljoin(redirect_uri, "/slack/install")
+        logger.info("Connect the Slack MCP Server: %s", install_url)
     app.start(port=port)
diff --git a/pydantic-ai/app_oauth.py b/pydantic-ai/app_oauth.py
index 2f9eab1..5a37e04 100644
--- a/pydantic-ai/app_oauth.py
+++ b/pydantic-ai/app_oauth.py
@@ -2,6 +2,7 @@
 import logging
 import os
 from pathlib import Path
+from urllib.parse import urljoin
 
 from dotenv import load_dotenv
 from slack_bolt import App
@@ -122,4 +123,8 @@ def _authorize_with_fallback_bot_token(
 
 if __name__ == "__main__":
     port = int(os.environ.get("PORT", 3000))
+    redirect_uri = os.environ.get("SLACK_REDIRECT_URI", "")
+    if redirect_uri:
+        install_url = urljoin(redirect_uri, "/slack/install")
+        logger.info("Connect the Slack MCP Server: %s", install_url)
     app.start(port=port)