NousResearch Ships Hermes Agent v0.4.0: MCP OAuth 2.1 Management, 6 New Adapters, OpenAI-Compatible API Server

GitHub·medium signal

NousResearch released Hermes Agent v0.4.0 on March 23 — the 'platform expansion' release with 280 merged PRs from 17 contributors. Headline features include an OpenAI-compatible API server with /v1/chat/completions, MCP server management CLI with OAuth 2.1 PKCE authentication, 6 new messaging adapters (Signal, DingTalk, SMS/Twilio, Mattermost, Matrix, Webhook), 4 new inference providers (GitHub Copilot, Alibaba DashScope, Kilo Code, OpenCode), and Claude Code-style @file/@url context injection with tab completion. Gateway prompt caching reduces costs on long Anthropic conversations.