I'm a physician (MD, PhD), and most days I run several AI coding agents at the same time. Claude Code in one window, Codex in another, Gemini in a third.

The terminal was never built for that. Tabs pile up, and I lose track of which agent asked me a question. And an answer I needed ten minutes ago sits in a buried pane.

So I built Arsminal. It's a free terminal for AI agents, and it looks and works like a messenger.

Chats, not tabs

The idea is simple. Chats on the left, the conversation on the right.

Each agent is a chat. Claude Code, Codex, Gemini, Grok, DeepSeek, local models, all in one window, each in its own thread.

When an agent finishes or asks me something, its chat moves up, like a message from a person would.

Voice and scheduled messages

Two messenger habits turned out to matter more than I expected.

Voice messages. I can dictate a long instruction instead of typing it, which is faster when the task is mostly explanation.

And scheduled messages. I can queue the next instruction for an agent and let it go out later, so a long run continues without me sitting in front of it.

Control from the phone, through a blind relay

The part I cared about most is the phone. Agents work for hours, and I'm not always at my desk.

Arsminal lets you control the agents from your phone through a blind relay. The connection is end-to-end encrypted with a hybrid of X25519 and ML-KEM-768, so it's post-quantum.

The relay server only forwards ciphertext. It can't read your prompts, your code, or the agents' answers.

Where it stands

Arsminal 1.0.0 came out on November 6, 2026. It's for Mac, Windows and Linux, and it's free.

It's not open source. I'd rather say that plainly than let anyone assume otherwise.

If you run more than one agent at a time and the terminal feels like the wrong shape for it, try it. And tell me what breaks.

Site: arsminal.com

I drafted this post with AI assistance and edited it myself.

Evgenii Arsentev, MD, PhD (Евгений Арсентьев) — creator of Arsminal; Founder & CEO of Dad4Kids and ArsentevAI; founder of ReelsZavod. Physician and medical scientist who builds AI-agent systems in production and publishes the measurements.

ORCID 0000-0002-9120-7298 · Wikidata Q141398931