Hermes Agent v0.21.5 (v2026.9.24)¶

Release Date: September 24, 2026 Since v0.21.4: 1,610 non-merge commits · 4,828 changed files (+164,132 / −149,440) · 460 merged PRs · 475 closed issues

Patch release. This tag rolls up the ~460 PRs merged since v0.21.4 into a stable tagged release for downstream consumers (Docker images, Hermes Cloud, hosted deployments).

Highlights¶

Desktop plugin SDK wave - composer draft API, session-list and row-decoration slots, sidebar nav preferences, model-pill label providers, typed settings/skills/toolsets/profiles bridges, a sandboxed embed primitive, an appearance-settings slot, and a public event bridge for plugin backends
Simple/Advanced interface mode for the Desktop app
The Connectors page replaces the MCP tab, with "Connect now" for a freshly installed plugin's MCP servers, and installed plugins' tools and skills going live in every open chat
Onboarding that offers catalog plugins beside connectors
Complete French, German and Spanish Desktop catalogs plus an RTL/LTR text direction setting
Custom model entry from the composer and Settings pickers
Function-key and dictation voice shortcuts
Per-profile stop/start/restart under the host multiplexer, and gateway.standalone to opt a profile out

Updating¶

hermes update
# or fresh install:
curl -fsSL https://hermes-agent.nousresearch.com/install.sh | bash

Full Changelog: v2026.9.21...v2026.9.24

← v0.21.4 - Patch Release | Changelog Home →

↑ Changelog Home

This Hermes repo is one of the largest structured collections of public AI, automation, business, and technology documentation. Content remains attributed to original authors and repositories. Indexed and organized by www.CorpusIQ.io.