Hermes Agent has released v0.15.0, significantly slimming down the codebase and upgrading the multi-agent platform.

According to Perceive Beating monitoring, the NousResearch team has officially released the open-source intelligent agent project Hermes Agent version 0.15.0. The codebase of the core run_agent.py has been significantly reduced by 76% from the original 16,083 lines to 3,821 lines, and completely refactored into 14 highly cohesive modules, eliminating editor lag. In terms of cold start and search performance, the development team compressed the Termux terminal cold-start time to 0.8 seconds by delaying the introduction of OpenAI dependencies and optimizing high-frequency function calls, while speeding up the hermes --version command by 63% to 258 milliseconds. The revamped session search tool session_search has abandoned large model calls in favor of configuration-free local filtering, reducing search time to 20 milliseconds, achieving a 4500x speedup and completely cost-free operation.

The Kanban tool has been upgraded to a full-fledged multi-agent collaboration platform. Developers can now simply enter hermes kanban swarm to one-click initialize a Swarm workflow consisting of a coordinator, parallel workers, independent validators, and synthetic nodes, with added single-task model coverage and scheduled launch support. In terms of security defenses, the new version has introduced proactive threat defense against Brainworm attacks, implementing traffic filtering and boundary tagging at three key checkpoints such as tool outputs, recall memory, and external skill loading to prevent the agent from being hijacked by malicious files or network services.

The ecosystem and third-party integrations have also undergone a deep upgrade. The system now supports centralized hosting of all cloud API keys based on Bitwarden, has launched a toolset that can load multiple skills with a single command, and added an interactive installation panel for the Nous official MCP service directory. The xAI ecosystem integration has introduced the xAI Web Search web search plugin, bridged the Grok exclusive execution guide in the hermes proxy agent, and enabled the hermes doctor diagnostic process to automatically alert to offline models and support one-click hot migration. To address blocking-level issues in the initial release, the official team urgently rolled out patch version 0.15.1 within hours, completely eliminating the 401 infinite reload loop issue faced by the panel in loopback mode, and fixing defects such as the failure of bare command path resolution like npx inside Docker containers and Kanban worker threads failing to terminate gracefully under a SIGTERM signal.