Hermes Agent v0.20.4 rolls up 74 PRs for Docker and fresh installs

Nous Research tagged Hermes Agent v0.20.4 on August 18, 2026, a day after v0.20.3, so operators who pin Docker images, hosted deployments, or fresh installs can take a stable snapshot of the work that landed in between.

The release is also tagged v2026.8.18 and was published at 2026-08-18T07:26:46Z. The project calls it a patch release: it rolls up the roughly 74 pull requests merged since v0.20.3 into a tagged build for downstream consumers. It is not framed as a new architecture story.

v0.20.3 itself is tagged v2026.8.16.2 and dated August 17. Across that short window the notes report about 146 commits touching about 265 files, with a line delta of +21,697 / −2,217.

A pin for images, not the long-form notes

If you want a curated changelog with highlights grouped by feature area and complete contributor credits, that write-up is deferred. The v0.20.4 notes say full curated release notes for this window will ship with v0.21.0 and will document everything from v0.20.0 onward. The project is explicit that nothing in this window is skipped.

That split is the practical news. v0.20.4 is the tag you can point an image or a new install at today. v0.21.0 is where Nous says the annotated story and credits will land.

Skill installs pick up an advisory scan

NVIDIA SkillEvaluator Tier 1 advisory scanning now runs on skill installs. The notes describe those checks as license and security checks. For anyone provisioning Hermes from a tagged release or a fresh install, that is the change that lands on the skill-install path in this pin—not a redesign of skills, and not a claim that the scan is blocking versus advisory beyond the word “advisory” in the notes.

Bot Mode, group chat, and a tabbed sidebar

The same window adds a tabbed SESSIONS|BOTS sidebar with per-bot hide and unhide. Bot Mode group-chat fixes cover long-running member turns, Markdown rendering, and cross-machine routing.

Those items sit in the rollup list rather than in a design write-up. What the tag tells you is that a v0.20.4 pin includes the sidebar work and those Bot Mode fixes. Deeper narrative, the project says, waits for v0.21.0.

Cron media-send and SessionDB

Cron media-send hardening in this window includes a configurable timeout, attachments on manual runs, and missed-fire surfacing. SessionDB gets event-loop-thread and contention fixes.

Together with the skill-install scan and Bot Mode routing work, these are the operational patches the tag exists to ship to Docker and hosted consumers who do not track every merge.

Desktop glass, hermes update, and kanban

The notes also list desktop glass and translucency surface work: matte glass, a frost picker, and macOS pre-select. hermes update gains parked-branch honesty. Kanban picks up native OS notifications.

None of those entries is expanded in this tag. They are named so a downstream pin is not a mystery bag. The project’s own framing is that the curated pass—highlights, feature areas, and credits—comes later.

How to take v0.20.4

Existing installs can run hermes update. The release page also documents a curl-based fresh-install script for new machines. The compare range published with the tag is v2026.8.16.2 through v2026.8.18.

Because this patch was cut the day after v0.20.3, the decision is whether you need the stable pin now or you can wait for v0.21.0’s notes. If you build images or provision hosts from a tagged release, v0.20.4 is the snapshot Nous cut for Docker images, hosted deployments, and fresh installs. If you want the annotated 0.20-series story before you move a pin, the project says that package arrives with v0.21.0 and covers this window from v0.20.0 forward.

What this release is not

It is a rollup, not a headline architecture release. The notes do not claim a new runtime, a new skill format, or a new SessionDB schema. They claim a patch tag that gathers already-merged PRs so downstream consumers can install a known point release that includes skill-install scanning, Bot Mode fixes, cron media-send hardening, and SessionDB contention work.

The file and line counts are large for a one-day gap—about 265 files and +21,697 / −2,217—which matches a rollup of work already in flight, including the desktop glass surface, rather than a single-line hotfix. Treat the numbers as the project reported them: approximate PR, commit, and file counts for the window since v0.20.3.

Next step: Read the v0.20.4 notes on the v2026.8.18 tag, then run hermes update on an existing install or retarget your downstream image at v0.20.4 / v2026.8.18 if you pin Hermes for Docker or hosted deployments. Watch v0.21.0 for the curated notes and credits that cover this window from v0.20.0 onward.