Plugins
Hermes has a plugin system for adding custom tools, hooks, and integrations without modifying core code. If you want to create a custom tool for yourself, your
Hermes has a plugin system for adding custom tools, hooks, and integrations without modifying core code. If you want to create a custom tool for yourself, your team, or one project, this is usually the right path. The developer guide's Adding Tools page is for built-in Hermes core tools that live in and . …
What this page covers
- Quick overview
- Minimal working example
- What plugins can do
- Plugin discovery
- Plugin sub-categories
- Plugins are opt-in (with a few exceptions)
- What the allow-list does NOT gate
- Migration for existing users
- Available hooks
- Plugin types
- Pluggable interfaces — where to go for each
- NixOS declarative plugins
- Managing plugins
- Interactive UI
- Enabled vs. disabled vs. neither
- Injecting Messages
Section outline mirrored from the official Hermes Agent documentation. Follow any heading to read the complete text on the source site.
More in Core Features
Features Overview
Hermes Agent includes a rich set of capabilities that extend far beyond basic chat. From persistent memory and file aware context to browser automation and voic
Tools & Toolsets
Tools are functions that extend the agent's capabilities. They're organized into logical toolsets that can be enabled or disabled per platform. Available Tools
Skills System
Skills are on demand knowledge documents the agent can load when needed. They follow a progressive disclosure pattern to minimize token usage and are compatible
Curator
The curator is a background maintenance pass for agent created skills . It tracks how often each skill is viewed, used, and patched, moves long unused skills th
Persistent Memory
Hermes Agent has bounded, curated memory that persists across sessions. This lets it remember your preferences, your projects, your environment, and things it h
Memory Providers
Hermes Agent ships with 8 external memory provider plugins that give the agent persistent, cross session knowledge beyond the built in MEMORY.md and USER.md. On