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v2026.9.7

NousResearch/hermes-agentv2026.9.7Sep 7, 2026by teknium1

AI Summary

This patch release aggregates significant changes from the main branch since v0.21.0, focusing on codebase modularization, performance optimizations, and reliability improvements. It includes updates to providers and models, along with enhancements to desktop session controls and MCP authorization.

Key Highlights

  • Codebase modularization and file-operation performance work
  • Startup performance improvements
  • Provider and model updates
  • Desktop session controls and browser annotations
  • MCP authorization and delegation reliability improvements

New Features

  • File-operation and startup performance work
  • Provider and model updates
  • Desktop session controls and browser annotations
  • MCP authorization improvements
  • Cron scheduling and delivery fixes

Full Release Notes

# Hermes Agent v0.21.1 (v2026.9.7)

**Release Date:** September 7, 2026

> Patch release. This tag rolls up current main since v0.21.0 for tagged deployments and downstream consumers.

## About this release

Measured at commit `6178e9f4eed8d99f4fc550add939d58c7bed6206`, the window since v0.21.0 contains **5,139 non-merge commits** across **4,364 changed files** (+601,014 / −768,419). GitHub reports **632 merged PRs** in the release window at preparation time. These figures exclude the release-version commit.

The rollup includes the codebase modularization, file-operation and startup performance work, provider and model updates, desktop session controls and browser annotations, MCP authorization improvements, cron scheduling and delivery fixes, and delegation reliability improvements. This patch does not attempt to enumerate or announce every feature in the window.

**Full curated release notes for this window will ship with v0.22.0**, covering everything since v0.21.0, including the intervening patch releases, feature details, and complete contributor credits.

## Updating

- Existing install: `hermes update`
- Fresh install: `curl -fsSL https://raw.githubusercontent.com/NousResearch/hermes-agent/main/scripts/install.sh | bash`
- Managed deployments should update through their deployment tooling using the new tag.

**Full Changelog:** [v2026.8.31...v2026.9.7](https://github.com/NousResearch/hermes-agent/compare/v2026.8.31...v2026.9.7)