abundantbeing/hermes-browser-extension

What is it?

Key features

• 01Side panel for Chromium and sidebar for Firefox, connected to Hermes via local, cloud, or remote gateway
• 02Bot Mode for switching between agents and running multi-agent group chats
• 03Opt-in Hermes Control on Chromium to let Hermes act on attached tabs, with approvals for risky actions
• 04Live session following with Steer, Queue, and Stop controls
• 05Tab screenshots and file attachments staged only when you choose them
• 06Twelve themes, light and dark modes, and text zoom

Use cases

• Asking Hermes to summarize or question the page you are reading without copying text
• Having Hermes operate a tab you attached, such as filling forms or navigating pages, on Chromium
• Chatting with a self-hosted Hermes instance on another machine through a trusted gateway
• Running a group chat where several Hermes agents answer in one room

Quick start

1. 1

   Clone the repository

   git clone https://github.com/abundantbeing/hermes-browser-extension.git
2. 2

   Enter the project folder and install dependencies

   cd hermes-browser-extension && npm install
3. 3

   Build the extension

   npm run build
4. 4

   In Chrome or Edge, open the extensions page, enable Developer mode, click Load unpacked, and select the dist/ folder

Things to know

• !Hermes Control tab operation is Chromium-only and not available in Firefox.
• !Current group-chat page-context delivery is not yet reliable.
• !Hermes Control on current Hermes versions requires installing the extension's companion plugin.

In collections

Topics

FAQ

What is hermes-browser-extension?

Chromium and Firefox side panel that connects your active browser tab to a local, cloud, or self-hosted Hermes Agent runtime. Hermes Browser Extension is a side panel for the Hermes Agent runtime, not a standalone browser chatbot. It sends active web context to Hermes through a local gateway, a signed-in Hermes Cloud agent tab, or a self-hosted remote gateway. Local and remote API connections can use the models, tools, skills, sessions, memory and MCP servers already configured in Hermes.

Is hermes-browser-extension free to use? What license does it have?

hermes-browser-extension is open source under the MIT license. Check the license terms before using it in commercial products.

Is hermes-browser-extension still maintained?

Actively maintained. The last commit to hermes-browser-extension was on Nov 6, 2026.

What can I use hermes-browser-extension for?

Asking Hermes to summarize or question the page you are reading without copying text Having Hermes operate a tab you attached, such as filling forms or navigating pages, on Chromium Chatting with a self-hosted Hermes instance on another machine through a trusted gateway Running a group chat where several Hermes agents answer in one room

How do I install hermes-browser-extension?

Clone the repository: git clone https://github.com/abundantbeing/hermes-browser-extension.git Enter the project folder and install dependencies: cd hermes-browser-extension && npm install Build the extension: npm run build In Chrome or Edge, open the extensions page, enable Developer mode, click Load unpacked, and select the dist/ folder

Where can I get hermes-browser-extension?

The source code and installation instructions are on GitHub: https://github.com/abundantbeing/hermes-browser-extension