Update Hermes Agent to v0.21.0 and your CLI gains a small animated companion: hermes terminal pets shipped on 31 August 2026 as part of the Pantheon Release, listed in the official Nous Research release notes on GitHub as "Ghostty-level terminal pets, because a companion should have a companion". They are a cosmetic feature — a little creature that lives in your terminal session while your agent works — and they arrived in the same CLI overhaul that added the Ctrl+P fuzzy command palette, a filter-as-you-type model picker and a richer status display. Small feature, yes. But it tells you something real about where the Hermes command line is heading, and this page covers what shipped, how to get it, and why a decorative pet is worth two minutes of your attention.
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Hermes Terminal Pets: What Actually Shipped
The confirmed facts on hermes terminal pets come from one place: the Hermes Agent v0.21.0 release notes, published by Nous Research on GitHub on 31 August 2026 under the version tag v2026.8.31. In the section covering the CLI improvements — the release notes call it the CLI power wave — pets get a single, very deliberate line: "Ghostty-level terminal pets, because a companion should have a companion".
That phrasing does two jobs. First, it names the benchmark: Ghostty, the fast native terminal emulator whose community has made in-terminal flourishes something of a calling card. Second, it frames the philosophy — Hermes already positions itself as a companion that works for you, so the pet is a companion for the companion. A face at the bottom of your terminal while the real work happens above it.
The release notes keep the description short, and it is worth being straight about that: Nous Research has not published a separate documentation page spelling out every pet variant or configuration option. What is confirmed is that pets ship with the v0.21.0 CLI, that they are cosmetic rather than functional, and that they arrived alongside a set of genuinely practical CLI upgrades covered below. If you want the full picture of the release they rode in on, the Hermes v0.21 Pantheon Release breakdown covers the headline features — named bots, agent-to-agent messaging, stateful cron jobs and live subagent steering.
How to Get Terminal Pets in Hermes Agent
Terminal pets are not a plugin or a paid extra — they are part of the v0.21.0 CLI itself. So the route to getting them is simply getting current:
- Update to v0.21.0 or later. The Pantheon Release shipped on 31 August 2026, so any install updated since then qualifies. If you have not updated in a while, expect a big jump: per the release notes, v0.21.0 spans roughly 5,800 commits since v0.20.0.
- Open the Hermes CLI. Pets live in the terminal experience specifically — if you spend your Hermes time in the desktop app or a web dashboard, you will meet them when you drop into a terminal session.
- Explore via the command palette. v0.21.0 added a fuzzy command palette on Ctrl+P that searches every available command as you type. It is the fastest way to discover any new surface in this release, pets included — and the command palette guide walks through it in full.
Because pets are cosmetic, there is nothing to configure before your agent keeps working exactly as before. The sensible habit after any major Hermes update is a quick pass over your setup regardless — the Hermes agent setup guide is the checklist for that.
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The CLI Power Wave Around the Pets
The pets are the fun line in a serious changelog. The same v0.21.0 CLI section lists three upgrades that change how the terminal feels day to day, all per the official release notes:
- Fuzzy command palette on Ctrl+P. Type a few characters of any command and jump straight to it. As the Hermes command set has grown release by release, discoverability had become a genuine problem — this is the fix.
- A model picker that filters as you type. The picker behind the model command now narrows the list live, which matters because v0.21.0 also added six new providers to the catalogue, including Meta Model API, Tencent TokenPlan and Nebius Token Factory. Choosing the right brain is a bigger decision than ever — the best model for Hermes agent guide covers how to make it.
- A richer status display. The status readout now surfaces more of what your agent is doing at a glance, in the same spirit as the full Hermes command center view.
Put together, the terminal is being treated as a first-class home for Hermes rather than a fallback for people who have not installed the desktop app. The pets are the signature on that statement.
Why a Cosmetic Feature Is Worth Noticing
It is easy to file hermes terminal pets under fluff, but personality has quietly become a load-bearing part of the Hermes design language. The Pantheon Release turned the roster into named bots with faces and group chats; the desktop app gives those bots a visible workplace, as covered in the Hermes desktop app guide; and the terminal now gets its own touch of character. That consistency is deliberate: an agent you recognise — a face, a name, a pet in the corner — is an agent you actually delegate to, rather than a process you monitor.
There is also a signal here about polish. Teams add decorative touches when the fundamentals are moving fast enough to afford them, and v0.21.0's fundamentals — per the release notes, around 2,475 merged pull requests from more than 760 contributors — back that up. A project shipping at that pace, which still spends a line on companionship, is a project confident in its direction. Interface care has been a Hermes trait for a while, as the best Hermes agent UI roundup shows across dashboards, web UIs and mission-control views.
Do Terminal Pets Change How You Should Run Hermes?
Practically, no — and that is the honest answer a cosmetic feature deserves. Your agent's output does not improve because a pixel creature is watching it work. The features from this release that genuinely change your daily running are elsewhere: stateful cron jobs that remember between runs, live steering of subagents mid-task, and the persistent multi-gateway connections that keep your Hermes workspace reachable across every messaging surface you use.
Where the pets do earn their place is time-in-terminal. If the CLI is where you live, small quality touches compound the same way a good editor theme does — you notice their absence more than their presence. And if you are building your whole operation on Hermes, the structural layer matters far more than the decoration: that is what Agent OS exists for, the operating system of files, prompts and workflows that turns a capable agent into a business asset. For choosing which model should power all of it, the Goldie Bench write-up covers how the leading agent brains compare in hands-on tests.
Hermes Terminal Pets FAQ
Are hermes terminal pets in the desktop app too?
The release notes list pets specifically under the CLI improvements. The desktop app has its own personality layer — bot avatars, group chats and the visible office — so the pets are best understood as the terminal's equivalent of that character work.
Do the pets cost anything or affect performance?
They ship free inside the standard v0.21.0 CLI. Nous Research describes them as a companion flourish rather than a feature with settings to tune, and nothing in the release notes ties them to resource usage worth worrying about.
Can you turn terminal pets off?
The release notes do not document a dedicated toggle either way. The practical route to check what your build supports is the Ctrl+P command palette — fuzzy-search for pet-related commands and you will see exactly what your version exposes.
What else shipped in the same release?
Bot Mode by default, agent-to-agent messaging, stateful cron jobs, live subagent steering, an MCP command centre, browser control and six new model providers — the full rundown lives in the v0.21 release guide linked at the top of this page.
Verdict: A Small Feature That Says a Lot
Hermes terminal pets will not change your revenue, your workflows or your model bills. They are a companion for the companion, exactly as the release notes put it — and as a one-line indicator of how much care is going into the Hermes CLI right now, they are strangely convincing. Update to v0.21.0, press Ctrl+P, have a look around. The pet is the garnish; the palette, the picker and the status display are the meal.
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