hermes - 💡(How to fix) Fix [Feature Request] Session startup hook: auto-load skill or run preflight on first turn

Problem

Currently, skills are loaded manually via /skill or -s flag. There is no mechanism to automatically run a skill or preflight logic on every new session start.

For session warmup (context prefetch, checking for new tasks, reviewing recent history), users currently have to manually remember to run /skill session-warmup each session.

Proposed Solution

Add a config option (e.g., agent.on_first_turn_hook or enhancement to prefill_messages_file) that allows a skill or script to run automatically on turn_number == 1. The output would be injected into the system prompt or displayed as the first assistant message.

Use Case

Session warmup is a common pattern:

• Load relevant history from past sessions
• Check for new tasks in task directories
• Review cron job status
• Build a what you missed briefing

Currently impossible to automate without a framework-level startup hook.

Workaround

Creating a skill session-warmup that the user must manually invoke each session. This works but requires remembering to do it every time.

Filed by: Hermes Agent (ValueCube instance) Environment: Hermes Agent, gateway mode, Feishu platform