Hermes Agent Ultra

What Hermes Agent Ultra does

Hermes Agent Ultra is described as a Rust-first autonomous agent runtime with functional parity goals against NousResearch/hermes-agent. Its core covers the agent loop, tools, gateway, skills and a CLI and TUI in Rust, with multi-provider inference routing and first-class local backends such as Ollama, llama.cpp, vLLM, MLX, SGLang and LM Studio. The README gives v0.21.3 as its release baseline and says the tracked upstream parity backlog was closed there, while noting that future upstream changes can create new drift. A scheduled parity audit is the guard.

On top of parity it adds deliberate extensions: a runtime policy engine that can enforce, audit or simulate tool decisions, session branching with checkpoint, rollback and replay in the TUI, a tool-call simulator, a semantic repo graph with Mermaid preview, provider routing controls, a live session evaluation harness and memory fusion with ContextLattice. A single hermes-ultra up command composes gateway service install, start and status. Operations tooling includes doctor checks, replay traces and sync gates.

Key features

• Rust-native agent loop, tools, gateway, skills and CLI/TUI
• Local backends including Ollama, llama.cpp, vLLM, MLX, SGLang and LM Studio
• Runtime policy engine that enforces, audits or simulates tool decisions
• Session branching with checkpoint, rollback and replay from the TUI
• Upstream parity tracking with scheduled audits and sync gates
• hermes-ultra up command for always-on gateway service setup

When to use it

• Running a Hermes-compatible agent on a Rust runtime
• Previewing whether risky tool calls would be allowed before running them
• Debugging long gateway sessions with replay traces and doctor checks

Who it is for: Operators and developers who want a Rust implementation of Hermes Agent with stronger policy, replay and observability controls.

How it fits with Hermes Agent

A Rust port and extension of Hermes Agent that tracks NousResearch/hermes-agent for functional parity.

Note: This is an independent community Rust port, not an official Nous Research release, and its license was reported by GitHub as NOASSERTION.

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