Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
Log in
Preview of Lodestone — Harmonist Companion

Lodestone — Harmonist Companion by Harmonia

Take Lodestone across the web: absorb any page and receive its Harmonist reading, optionally kept in your own Lodestone memory.

0 (0 reviews)0 (0 reviews)
Download Firefox and get the extension
Download file

Extension Metadata

Screenshots
Lodestone gives the Harmonist reading of a page of Marcus Aurelius
About this extension
Lodestone is the Harmonist companion of harmonism.io, ready on any page you read, when you call it.

ABSORB A PAGE
Open the sprite on an article, an essay or a post, and Lodestone reads it: a short summary, then the Harmonist reading, which holds the page's claims against Harmonism at the register the page calls for. An idea or argument is read against the doctrine, a life against the individual path and the Wheel of Harmony, a civilization against the Architecture of Harmony.

ASK ABOUT A PASSAGE
Select any text, right-click, and choose "Ask Lodestone about…". The conversation continues in the panel, with the page as its context.

YOUR OWN MEMORY (OPTIONAL)
Without an account, Lodestone is anonymous: ten messages in all are free, and nothing is kept on harmonism.io. The pages you ask about are listed in this browser only, on the extension's Readings page, and you can switch that off.

With a free harmonism.io account (ten messages a day for the first month, then five a day), sign in under the extension's options. Your readings then join the same memory as Lodestone on the website, the Lodestone app and Lodestone Desktop: one memory across your devices, each reading kept as its own conversation with its page. The memory is held in your browser and synced between your devices encrypted in the browser and locked under your password, so harmonism.io stores it without being able to read it. Each message carries your device's time zone, so Lodestone knows the hour of your day.

For Lodestone without a daily limit, add your own OpenRouter key in the extension's options, or use the free Lodestone app with your own model.

COMES ONLY WHEN CALLED
Click the Lodestone icon in your toolbar to bring Lodestone to the page; click again to dismiss it. Until you call it, the extension does not run on the page. It never appears on harmonism.io, which has its own.

Lodestone is free. There is no paid tier. No ads, no analytics, no tracking. Lodestone is open source (CC0): https://codeberg.org/harmonism/lodestone
Rated 0 by 0 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
0
4
0
3
0
2
0
1
0
No reviews yet
Permissions and data

Optional permissions:

  • Access your data for harmonism.io
  • Access your data for www.harmonism.io

Required data collection, according to the developer:

  • Authentication information
  • Location
  • Personal communications
  • Personally identifying information
  • Website content
Learn more
More information
Add-on Links
  • Support site
  • Support Email
  • Copy add-on ID
Version
2.2.10
Size
354.27 KB
Last updated
4 days ago (Oct 29, 2026)
Related Categories
  • Other
License
Custom License
Privacy Policy
Read the privacy policy for this add-on
Version History
  • See all versions
Add to collection
Report this add-on
Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Download

  • Download Firefox
  • Windows
  • macOS
  • iOS
  • Android
  • Linux
  • All

Latest Builds

  • Nightly
  • Beta

Firefox for Business

  • Enterprise

Community

  • Connect
  • Contribute
  • Developer

Follow

  • Instagram
  • YouTube
  • TikTok
  • Bluesky
  • Podcast
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.