Hermes Agent v0.8.0 Adds Notify-on-Complete, Live Model Switching
TL;DR
Hermes Agent v0.8.0 (April 8, 2026) adds notify_on_complete for background tasks, live /model switching mid-session, native Google AI Studio provider, MCP OAuth 2.1 PKCE, and OSV malware scanning.
What changed
Hermes Agent v0.8.0 (The Intelligence Release) shipped April 8, 2026 with five notable changes. notify_on_complete lets long-running tasks (training runs, test suites, deploys) signal the agent on completion rather than blocking on polling. /model now works mid-session across CLI, Telegram, Discord, Slack, and gateway. Google AI Studio is a first-class provider, not an OpenRouter proxy. MCP gains OAuth 2.1 PKCE and OSV malware scanning of extension packages before install. Inactivity-based timeouts replace wall-clock kills.
Why it matters
For cron-agent workloads, event-driven completion notifications eliminate the polling-loop tax on context windows and inference credits. The MCP security work (OAuth 2.1 PKCE, OSV scanning) closes the supply-chain hole that has been the single biggest open question for production MCP usage. Native Google AI Studio integration removes a hop and unlocks self-optimised GPT and Codex tool-use guidance with patches to five identified failure modes. Free Xiaomi MiMo v2 Pro on Nous Portal subscriptions covers auxiliary compression, vision, and summarisation tasks at zero marginal cost.
What to watch for
Standard upgrade path with no breaking config changes; existing MCP setups continue to work, with OSV scanning running on next install rather than retroactively. Test notify_on_complete against your longest-running tool calls to confirm latency from completion to agent resume. Verify that PKCE flows succeed with each MCP server you depend on before relying on them in production.
Who this matters for
- Developers: notify_on_complete is the durability win for cron-agent workloads. MCP OAuth 2.1 PKCE and OSV malware scanning bring MCP security posture up to where it should be, and free Xiaomi MiMo v2 Pro on Nous Portal handles auxiliary compression and vision calls.
Harsh’s take
v0.8.0's notify_on_complete is the feature that matters most for real production use. Every long-running agent workflow hits the same wall: the agent either blocks uselessly while a 20-minute task runs, or burns context and credits on a polling loop. Switching to event-driven notifications changes what is practical for cron-agent workloads and keeps the agent's working context lean across multi-stage runs.
The MCP OAuth 2.1 plus OSV scanning combination is the MCP security posture catching up to where it needed to be. MCP's supply-chain attack surface is real; OSV package scanning before install is table stakes for any framework that encourages MCP extensions. Live /model switching mid-session removes a common papercut, and free MiMo v2 Pro for auxiliary calls (compression, vision, summarisation) materially shifts the cost profile of running Hermes seriously.
About Hermes Agent
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