Hermes Agent v0.21.3 (v2026.9.14)¶

Release Date: September 14, 2026 Since v0.21.2: ~338 merged PRs

Patch release. This tag exists so the remote-gateway sign-in fixes below reach Cloud agents, which auto-update to the newest release tag.

What this patch ships for remote Desktop / Cloud users¶

Remote dashboard sessions no longer expire on refresh bursts (#110061, fixes #55712). Both refresh paths on the gateway (the cookie gate and the desktop's native bearer route) now coalesce concurrent requests carrying the same rotating refresh token, so a Desktop wake burst can no longer replay an already-rotated token and revoke the whole session. Refresh also runs off the event loop, so a slow identity provider no longer freezes /api/status.

Also fixed in this tag¶

Long-lived processes stop leaking duplicate state.db writer handles (#110934, fixes #100896 #103339). The gateway, dashboard/Desktop backend, ACP and CLI readers attach read-only, and in-process writers share the registry handle, so the N live SessionDB handles precursor stops firing on a healthy topology.

Updating¶

hermes update
# or fresh install:
curl -fsSL https://hermes-agent.nousresearch.com/install.sh | bash

Full Changelog: v2026.9.11...v2026.9.14

← v0.21.2 - The state.db Patch Release | v0.21.4 - Patch Release →

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