Redline for Hermes Desktop: plugin for Hermes Agent

Hermes Desktop plugin to annotate Markdown passages and send the review back to the agent in one batch

What Redline for Hermes Desktop does

When Hermes writes a reviewable Markdown document with its file tools, Redline adds a card to the final response that opens the document in a pane docked beside the chat. Selecting a passage offers a comment, a question or a change request, shown as a floating card with a margin marker. Each annotation can be added to a list or sent immediately. A batch arrives in the chat as one structured message, numbered to match your notes, and the pane refreshes as the agent edits the file.

Annotations are stored in a sidecar file next to the document (doc.md.redline.json), so open threads, resolved threads and sent items survive restarts. The plugin has three parts: a Desktop plugin.js, a small FastAPI backend in dashboard/plugin_api.py and the sidecar. The README discloses that it reads any local .md or .markdown path you name (up to 1 MB), writes only the sidecar, makes no network calls beyond the local Hermes gateway, and uses a transform_llm_output hook to append its card directive to responses.

Key features

Review pane docked beside the chat, using the app's own Markdown renderer and theme
Comment, question and change-request annotations on selected text
Add-to-list batching or send-now for a single note
Sidecar file that keeps annotations across restarts
Live refresh of the pane while the agent edits the file

When to use it

Reviewing a long report written by Hermes without copying paragraphs back into chat
Sending point-by-point feedback on a plan or analysis as one numbered batch
Keeping a record of open and resolved review threads next to the document

Who it is for: Hermes Desktop users who have the agent write reports, plans or docs in Markdown and want to review them in place.

How it fits with Hermes Agent

A plugin for Hermes Desktop built on the Desktop plugin SDK, with no core patches.

How to install Redline for Hermes Desktop

These commands are copied from the project's README. Check the repository for the latest steps before you run them.

hermes plugins install redline

Requirements: Hermes Desktop with the plugin enabled under Capabilities, Plugins, and a gateway restart so the backend routes mount

FAQ

What is Redline for Hermes Desktop?

Redline for Hermes Desktop is a plugin that lets you review Markdown documents written by Hermes by annotating passages in a side pane. The annotations go back to the agent as a structured message.

How do I install Redline for Hermes Desktop?

Run hermes plugins install redline, or copy the directory to ~/.hermes/plugins/redline. Then enable it in Capabilities, Plugins and restart the gateway.

Is Redline for Hermes Desktop free and open source?

Yes, the repository is released under the MIT license.