Hermes Agent v0.21.1 (v2026.9.7)¶
Release Date: September 7, 2026 Since v0.21.0: 5,139 non-merge commits · 4,364 changed files (+601,014 / −768,419) · 632 merged PRs
Patch release. This tag rolls up current main since v0.21.0 for tagged deployments and downstream consumers.
About This Release¶
The rollup covers the work between the Pantheon Release and this tag:
- Codebase modularization and file-operation and startup performance work
- Provider and model updates across the catalog
- Desktop session controls and browser annotations
- MCP authorization improvements
- Cron scheduling and delivery fixes
- Delegation reliability improvements
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¶
hermes update
# or fresh install:
curl -fsSL https://hermes-agent.nousresearch.com/install.sh | bash
Full Changelog: v2026.8.31...v2026.9.7
← v0.21.0 - The Pantheon Release | v0.21.2 - The state.db Patch Release →
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