# Hermes Agent v0.8.0: background task notifications, live model switching, MCP OAuth 2.1

> Adds completion notifications for background processes, mid-session model/provider switching across every gateway platform, a native Google AI Studio provider, and standards-compliant OAuth 2.1 for MCP servers. Affects anyone running long jobs through Hermes or juggling multiple inference providers.

| | |
|---|---|
| **Tool** | Hermes Agent |
| **Version** | v2026.4.8 |
| **Kind** | release |
| **Published** | 2026-04-08 |
| **Observed** | 2026-08-11 |
| **Significance** | 4/5 |
| **Breaking** | no |
| **Categories** | feature, model-support, capability, security |

## What changed


- `notify_on_complete` — background tasks notify the agent when they finish, removing polling for builds, test runs, and training jobs
- `/model` switches model and provider mid-session from CLI, Telegram, Discord, Slack, or any gateway; aggregator-aware resolution with cross-provider fallback and inline-button pickers on Telegram/Discord
- Free-tier Xiaomi MiMo v2 Pro on Nous Portal for auxiliary tasks (compression, vision, summarization), with free-tier gating and pricing shown in model selection
- Native Google AI Studio (Gemini) provider, with models.dev registry integration for automatic context-length detection across providers
- GPT/Codex tool-use guidance patched against 5 identified failure modes found via automated behavioral benchmarking
- Gateway and cron timeouts now measure tool activity rather than wall-clock time, so active long-running tasks are not killed
- Approval buttons on Slack and Telegram replace typing `/approve`
- MCP OAuth 2.1 PKCE, plus OSV malware scanning of MCP extension packages
- Structured logs at `~/.hermes/logs/` with a `hermes logs` command; config structure validated at startup
- Plugins can register CLI subcommands, get request-scoped API hooks, prompt for env vars at install, and hook session lifecycle events
- Matrix reaches Tier 1 (reactions, read receipts, rich formatting, room management); Discord channel controls; Signal MEDIA: tags; Mattermost attachments
- Security: SSRF consolidation, timing attack mitigations, tar traversal, credential leakage guards, cron path traversal, cross-session isolation
- Scope: 209 merged PRs, 82 resolved issues


## Sources

- [github_release](https://github.com/NousResearch/hermes-agent/releases/tag/v2026.4.8) — retrieved 2026-08-11

## Community

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Canonical: https://changelogs.info/hermes-agent/v2026-4-8
Entity: https://changelogs.info/hermes-agent
Event ID: `evt_2026-04-08_hermes-agent_v2026-4-8`
Licence: event synthesis © changelogs.info, CC BY 4.0. Linked sources belong to their vendors.