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Hermes Agent Hermes Agent v0.21.5 (v2026.9.24)

2026-09-24 · official notes

Summary

• Hermes Agent v0.21.5 (v2026.9.24)
• Release Date: September 24, 2026
• 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). Full curated notes for this

Full notes

# Hermes Agent v0.21.5 (v2026.9.24)

**Release Date:** September 24, 2026

> 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). Full curated notes for this window are deferred to v0.22.0.

## About this release

Measured at commit `f97608f178d1ffeca59860195ab7da295f7c8e5f`, the window since v0.21.4 contains **1,610 non-merge commits** across **4,828 changed files** (+164,132 / −149,440), **460 merged PRs** and **475 closed issues**.

Also in the window, undocumented here on purpose: a Desktop plugin SDK wave (composer draft API, session-list and row-decoration slots, sidebar nav prefs, model-pill label providers, typed settings/skills/toolsets/profiles bridges, a sandboxed embed primitive, appearance-settings slot, and a public event bridge for plugin backends); a Simple/Advanced interface mode for Desktop; the Connectors page replacing 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; the live dock showing the standing `/goal` and queued prompts in the CLI and TUI; a kanban design pass with a two-column ticket modal and markdown task text; webhook deliveries mirrored into the target chat session; Bot Screen on hosted `-desktop` images; GPT-6 Sol/Terra/Luna and Claude Opus 5.5 in the Nous and OpenRouter catalogs; an official Blender Lab integration and NVIDIA app/Broadcast plugins; a long run of hot-path performance work across config loading, the tool registry, gateway message handling and the model picker; and dozens of new community plugins in the catalog.

**Full curated release notes for this window ship with v0.22.0**, which will document everything from v0.21.0 onward — highlights, feature areas, and complete contributor credits. Nothing in this window is skipped.

## Updating

- `hermes update` (git installs), or re-run the installer one-liner.
- Docker / Hermes Cloud: images build from this tag (`nousresearch/hermes-agent:v2026.9.24`).

**Full changelog:** https://github.com/NousResearch/hermes-agent/compare/v2026.9.21...v2026.9.24