Hermes Agent Updates & Release Notes

Hermes Agent Oct 14, 20260.22.0

Hermes 0.22.0 makes first setup, connectors and local models easier

Hermes published stable 0.22.0 on October 14; its release notes are dated October 13. A fresh desktop install opens a guided setup chat on a free trial model, available once per operating-system user, so getting started does not require an API key. Hosted connectors bring apps such as Gmail, Linear and Notion into the agent, with several named accounts supported for each app. Local Models setup installs and manages llama.cpp on macOS, Windows and Linux, helping users choose an open model that fits their hardware. The release also documents tested stable update channels, signed desktop packages, browser sign-in through 1Password, Bitwarden or Hermes's encrypted vault, and a Bot Screen that users can take over for login, two-factor authentication or CAPTCHA steps. This is the feature roundup for the whole development window, including 0.21.1 through 0.21.7, rather than a claim that every feature arrived after the last patch.

Your move: A major release roundup that also covers the 0.21.1 to 0.21.7 patches

Hermes published stable 0.22.0 on October 14; its release notes are dated October 13. A fresh desktop install opens a guided setup chat on a free trial model, available once per operating-system user, so getting started does not require an API key. Hosted connectors bring apps such as Gmail, Linear and Notion into the agent, with several named accounts supported for each app. Local Models setup installs and manages llama.cpp on macOS, Windows and Linux, helping users choose an open model that fits their hardware.

The release also documents tested stable update channels, signed desktop packages, browser sign-in through 1Password, Bitwarden or Hermes's encrypted vault, and a Bot Screen that users can take over for login, two-factor authentication or CAPTCHA steps. This is the feature roundup for the whole development window, including 0.21.1 through 0.21.7, rather than a claim that every feature arrived after the last patch.

Why it matters

The focus is getting from a fresh install to useful work with fewer manual setup steps. Connectors and local-model management make Hermes easier to use beyond a terminal. Running a local model does not make connected apps or browser tasks offline, and the setup trial is not unlimited free model use.

GitHub Releases

Hermes Agent Oct 12, 20260.21.7

Hermes 0.21.7 moves official source installs to stable release updates

Hermes published the stable 0.21.7 patch on October 12; its notes label the release October 11. Source installs from the official repository now update to the latest tagged release instead of every commit on main. An install already newer than that release stays where it is until a newer release appears. Source installs in the desktop app get a Stable releases / Every commit switch, while the CLI can follow main with `hermes update --set-channel main`. Forks and mirrors keep following main, and Store, MSIX and bundled desktop installs are unchanged.

Your move: Source installs can opt back into every main commit with hermes update --set-channel main

Hermes published the stable 0.21.7 patch on October 12; its notes label the release October 11. Source installs from the official repository now update to the latest tagged release instead of every commit on main. An install already newer than that release stays where it is until a newer release appears. Source installs in the desktop app get a Stable releases / Every commit switch, while the CLI can follow main with `hermes update --set-channel main`. Forks and mirrors keep following main, and Store, MSIX and bundled desktop installs are unchanged.

Why it matters

Official source installs get a less volatile update path without being moved back to an older version. Check the channel if you deliberately want unreleased changes. The patch also preserves signed reasoning when sessions resume and improves update checks behind some firewalls. The full feature roundup for this development window is deferred to 0.22.0, so this entry covers the changes explicitly documented for 0.21.7.

GitHub Releases

Hermes Agent Sep 24, 2026v0.21.5

Hermes Agent v0.21.5 adds a Connectors page and a simple/advanced interface mode

Nous Research shipped Hermes Agent v0.21.5 on September 24, 2026, rolling up about 460 merged pull requests since v0.21.4. The desktop app gets a new Connectors page that replaces the old MCP tab, a choice between a Simple and an Advanced interface mode, and full French, German, and Spanish translations. The update also expands the Desktop Plugin SDK, adds new model options including GPT-6 variants and Claude Opus 5.5, and ships official Blender Lab and NVIDIA plugin integrations.

Your move: A large rollup patch, no action needed unless you use these features

Nous Research shipped Hermes Agent v0.21.5 on September 24, 2026, rolling up about 460 merged pull requests since v0.21.4. The desktop app gets a new Connectors page that replaces the old MCP tab, a choice between a Simple and an Advanced interface mode, and full French, German, and Spanish translations. The update also expands the Desktop Plugin SDK, adds new model options including GPT-6 variants and Claude Opus 5.5, and ships official Blender Lab and NVIDIA plugin integrations.

Why it matters

Most users won't need to do anything differently. If you manage plugins or connect tools through Hermes Agent's desktop app, the new Connectors page and expanded Plugin SDK are worth a look.

GitHub Releases

Hermes Agent Sep 21, 2026v0.21.4

Hermes Agent v0.21.4 adds a gateway lock, streamed CLI output, and desktop plugin management

Nous Research shipped Hermes Agent v0.21.4 on September 21, 2026, the latest patch in its ongoing v0.21 line. It adds a lock so only one gateway process runs on a machine at a time, a new `--format stream-json` option for scripting the command line, and lets the desktop app manage plugins and pick fonts from its Plugins hub. The release also adds several new community plugins, including Tailscale, SSH, and RSS, and fixes bugs across profiles, cron jobs, and the local state database.

Your move: A feature-and-fix patch, no action needed unless you use these features

Nous Research shipped Hermes Agent v0.21.4 on September 21, 2026, the latest patch in its ongoing v0.21 line. It adds a lock so only one gateway process runs on a machine at a time, a new `--format stream-json` option for scripting the command line, and lets the desktop app manage plugins and pick fonts from its Plugins hub. The release also adds several new community plugins, including Tailscale, SSH, and RSS, and fixes bugs across profiles, cron jobs, and the local state database.

Why it matters

Most users won't need to do anything. If you script Hermes Agent from the command line or manage plugins through the desktop app, this update gives you more control over both.

GitHub Releases

Hermes Agent Sep 14, 2026v0.21.3

Hermes Agent v0.21.3 fixes session drops and a memory leak

Nous Research shipped Hermes Agent v0.21.3, a patch bundling around 338 merged fixes. It stops remote dashboard sessions from expiring during bursts of refresh requests, and closes a leak in how the app holds open its local database file during long-running sessions. The release also adds support for a few new underlying models and lets Slack tables be pasted directly into chats.

Your move: A maintenance patch, no action needed unless you hit these bugs

Nous Research shipped Hermes Agent v0.21.3, a patch bundling around 338 merged fixes. It stops remote dashboard sessions from expiring during bursts of refresh requests, and closes a leak in how the app holds open its local database file during long-running sessions. The release also adds support for a few new underlying models and lets Slack tables be pasted directly into chats.

Why it matters

Most users won't notice a difference day to day. If you've seen your dashboard session drop unexpectedly or the app slow down after running for a long time, this update fixes both.

GitHub Releases

Hermes Agent Sep 11, 2026v0.21.2

Hermes Agent v0.21.2 fixes a bug that could corrupt its local database

Nous Research shipped Hermes Agent v0.21.2, a patch release fixing a bug introduced in v0.21.0's rewrite of how the app talks to its local database. That database, `state.db`, stores an agent's sessions and memory. The bug could make two parts of the app fight over the same database file at once, which sometimes made a healthy database get reported as corrupted, or made one bad row crash the sessions list.

Your move: Update now if you're on v0.21.0 or v0.21.1

Nous Research shipped Hermes Agent v0.21.2, a patch release fixing a bug introduced in v0.21.0's rewrite of how the app talks to its local database. That database, `state.db`, stores an agent's sessions and memory. The bug could make two parts of the app fight over the same database file at once, which sometimes made a healthy database get reported as corrupted, or made one bad row crash the sessions list.

Why it matters

If you installed v0.21.0 or v0.21.1 and saw sessions disappear or the app report a corrupted database, update to v0.21.2 now to stop further corruption. Updating alone won't fix a database that's already damaged: stop the gateway, run `hermes doctor` to check what's actually wrong, then `hermes sessions recover` or `hermes sessions repair` to fix it.

GitHub Releases

Hermes Agent Sep 7, 2026v0.21.1

Hermes Agent ships a maintenance patch bundling thousands of small fixes

Nous Research released Hermes Agent v0.21.1 on September 7, 2026. It's a patch release that rolls up over 5,000 code changes made since v0.21.0, including faster file handling and startup, updated AI model providers, better desktop session controls and browser annotations, fixes to scheduled task delivery, and more reliable hand-offs between sub-agents. Nous Research says this release is mostly maintenance and that a full write-up of new features will come with v0.22.0. You can get it by running `hermes update`.

Your move: Run `hermes update` to get it; the real new features land in v0.22.0

Nous Research released Hermes Agent v0.21.1 on September 7, 2026. It's a patch release that rolls up over 5,000 code changes made since v0.21.0, including faster file handling and startup, updated AI model providers, better desktop session controls and browser annotations, fixes to scheduled task delivery, and more reliable hand-offs between sub-agents. Nous Research says this release is mostly maintenance and that a full write-up of new features will come with v0.22.0. You can get it by running `hermes update`.

Why it matters

Nothing here needs a decision from you today: it's a background maintenance update, not a new capability to try. Update when convenient and watch for v0.22.0 for the actual new features.

Hermes Agent GitHub Releases

Hermes Agent Sep 3, 2026Hermes Desktop

Hermes Desktop sets up a local model in one click

On September 3, 2026, Nous Research added one-click local model setup to Hermes Desktop. It reads your hardware, picks the best model your machine can run, then downloads and configures it for you.

Your move: Reads your hardware and picks the right model automatically

On September 3, 2026, Nous Research added one-click local model setup to Hermes Desktop. It reads your hardware, picks the best model your machine can run, then downloads and configures it for you.

Why it matters

If you've held off running Hermes Agent locally because picking and configuring the right model felt like a chore, this removes that step entirely.

Nous Research

Hermes Agent Aug 31, 2026v0.21.0

Hermes Agent v0.21.0 adds Bot Mode, agent-to-agent group chats

Nous Research released Hermes Agent v0.21.0 on August 31, 2026. The big new feature is "Bot Mode": named agents that stay running and can chat with each other in groups. It also adds scheduled tasks that remember past context, live control over sub-agents, and a dashboard for managing all of it. This follows several smaller updates through August.

Your move: Update now, Bot Mode changes how multi-agent setups run

Nous Research released Hermes Agent v0.21.0 on August 31, 2026. The big new feature is "Bot Mode": named agents that stay running and can chat with each other in groups. It also adds scheduled tasks that remember past context, live control over sub-agents, and a dashboard for managing all of it. This follows several smaller updates through August.

Why it matters

If you run several Hermes agents together, this update changes how they behave: your scheduled tasks and agent settings may work differently now. Read the release notes and test it before updating a system you depend on.

GitHub Releases

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