v0.12.27 v2026.9.7
NousResearch/hermes-agentSep 7, 2026 → Sep 7, 20260 days between releases
What's New
Major rollup of modularization, performance, and MCP authorization improvements.
New Features
- Codebase modularization and file-operation performance work
- Startup performance improvements
- Provider and model updates
- Desktop session controls and browser annotations
- MCP authorization improvements
Improvements
- Startup performance improvements
- MCP authorization and delegation reliability improvements
- Codebase modularization
- Provider and model updates
- Cron scheduling and delivery fixes
Bug Fixes
- Cron scheduling and delivery fixes
Upgrade Notes
Use `hermes update` for existing installs or update via deployment tooling for managed deployments. Note that full feature details are deferred to v0.22.0.
The Two Releases
v0.12.27 — the full MCP, flows, and searchable meetings
Sep 7, 2026· 1 month ago
A major feature release introducing full MCP capabilities, a Python-based flows engine, and searchable transcripts. It enhances agent capabilities with friction reporting and standing notices, while hardening security regarding header handling and webhook secrets.
Full release notesHermes Agent v0.21.1 (v2026.9.7)
Sep 7, 2026· 1 month ago
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.
Full release notes