Agent-Managed Skills (skill_manage tool)
The agent can create, update, and delete its own skills via the skill_manage tool. This is the agent's procedural memory - when it figures out a non-trivial workflow, it saves the approach as a skill for future reuse. Skills and memory work together in the self-improvement loop: memory stores small durable facts that should always be in context, while skills store longer procedures that should load only when relevant. The background review can suggest or stage skill changes after a session, but the write-approval gate below lets you require human review before those changes land.
From the official Hermes Agent documentation.