Version 0.3.1 focuses on connection reliability and fixes a page-injection crash.

• Fixed automatic gateway pairing when your Hermes runtime requires an API key. Connect to Hermes now opens the approval screen instead of dropping to manual setup.
• Fixed a repeated "Identifier 'browserApi' has already been declared" error that could appear in Vivaldi and other Chromium browsers after content scripts were re-injected.
• Content-script recovery is now probe-first: only missing scripts are injected after an extension reload, instead of re-running every script.
• Startup timing instrumentation and an internal operations toolkit were added (no user-visible change).
• No changes to permissions or host access in this release.

Requires Firefox 142 or later.

Hermes Browser Extension v0.3.0

This is the largest Hermes Browser Extension update so far, with major improvements to browser context, local-document workflows, session reliability, privacy, customization, and the overall Firefox experience.

WHAT'S NEW

• Added approved local HTML, browser-rendered PDF, and localhost workflows. Local files require both Firefox file access and explicit Hermes Browser approval.

• Added configurable right-click actions with current-session, new-session, and background routing.

• Expanded localization across 21 languages and added complete browser-native locale packs.

• Improved Hermes Assist reliability, model routing, session creation, launcher placement, safe draft application, and duplicate-injection protection.

• Added stronger Cloud session continuity, dashboard profile discovery, asynchronous delegation recovery, and session-scoped model/provider selection.

• Added cross-surface text zoom, accessibility-focused font profiles, validated custom themes, VS Code theme imports, and Agent Theme Studio.

• Improved the Side Panel settings experience with a persistent header Save action, compact close control, clearer button alignment, and simplified settings organization.

• Fixed Issue #73 by opening the /commands and skill menus above the composer, keeping long prompts visible without covering or compressing the text area.

• Improved startup diagnostics, control-state presentation, attachment controls, keyboard behavior, reduced-motion support, and responsive layouts.

• Added stable Firefox add-on identity and Mozilla-hosted automatic update support.

SECURITY AND PRIVACY

• Sensitive fields, credentials, payment information, MFA values, restricted browser pages, stale document references, and credential-bearing URLs fail closed.

• Browser context remains explicitly user-controlled and bounded.

• Local-document access does not bypass sensitive-action or restricted-page protections.

• Controller and companion diagnostics retain bounded metadata and redacted receipts only. They do not persist raw page text, typed values, credentials, screenshots, response bodies, PDFs, or uploaded file contents.

• Hermes Browser does not request cookies, browsing history, bookmarks, password-manager access, or native messaging.

FIREFOX COMPATIBILITY

This release supports Firefox 142 and newer.

Firefox receives the capability-safe WebExtension feature set. Chromium-only debugger access and trusted-input browser control are not enabled or claimed on Firefox.

Full release notes:
https://github.com/abundantbeing/hermes-browser-extension/releases/tag/v0.3.0