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

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.

Source: GitHub Releases ↗

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