Hermes Agent v0.21.0 full release notes
Hermes Agent v0.21.0, released August 31, 2026, represents a major expansion of multi-agent capability, with 5,800 commits and contributions from 760+ developers since v0.20.0. The headline feature is Bot Mode, now bundled into the deskt…
- 01Scheduled cron jobs gained persistent memory and continuity across runs, while subagent delegation was upgraded to allow live mid-flight steering, early stopping, and output schema validation with defaults raised to 250 iterations and 10 concurrent children.
- 02The release also ships browser control allowing the agent to navigate and interact with the in-app browser directly, a unified MCP command center dashboard, six new model providers, and security hardening that requires explicit write approval before any agent can modify its own instruction files or memory stores.
Hermes Agent v0.21.0, released August 31, 2026, represents a major expansion of multi-agent capability, with 5,800 commits and contributions from 760+ developers since v0.20.0. The headline feature is Bot Mode, now bundled into the desktop app by default, enabling Discord-style group chats between named agents with persistent identities and direct bot-to-bot messaging via a new hermes peer command. Scheduled cron jobs gained persistent memory and continuity across runs, while subagent delegation was upgraded to allow live mid-flight steering, early stopping, and output schema validation with defaults raised to 250 iterations and 10 concurrent children. The release also ships browser control allowing the agent to navigate and interact with the in-app browser directly, a unified MCP command center dashboard, six new model providers, and security hardening that requires explicit write approval before any agent can modify its own instruction files or memory stores.
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