openclaw - 💡(How to fix) Fix Session closure metadata leaking into user-visible messages

TL;DR

The issue can be fixed by modifying the message processing pipeline to filter out internal session closure messages before they are displayed to the user.

Guidance

• Investigate the message processing pipeline to identify where internal session closure messages are being appended to user messages.
• Check the implementation of the session closure mechanism to ensure it is not inadvertently sending closure messages as part of the user's outbound messages.
• Consider adding a message filtering mechanism to remove internal metadata and session lifecycle information from user-facing messages.
• Review the OpenClaw v2026.4.14 documentation to see if there are any configuration options or APIs that can be used to control the visibility of internal session metadata.

Example

# Pseudo-code example of a message filtering function
def filter_internal_messages(message):
    if message.startswith("SESSION FULLY ARCHIVED"):
        return None  # Filter out internal session closure messages
    return message

Notes

The provided information suggests that the issue is related to the message processing pipeline, but the exact cause and solution may depend on the specific implementation details of OpenClaw and the Slack channel integration.

Recommendation

Apply a workaround by implementing a message filtering mechanism to remove internal session closure messages from user-facing messages, as the root cause of the issue is likely related to the message processing pipeline and may require a code change to fix.