I built a terminal that is also an agent comms system. Way back when Claude Code first came out I hacked together something to get two of them talking to each other and inserting text and reading from each others respective TTYs, and it was horribly hacky, so I set about actually understanding how CLIs, TUIs, and terminals work (I had written a simplified terminal based on jquery-terminal a long while ago during Covid that hacked tool runs using GPT-2, so this was overdue). I've been writing code for decades, so have all of it handy in case I need to point the LLMs to a particular way of doing things. Refactoring constantly is key.
There's cmux in this space, but I had already used Hyper for years, so I decided it was time to fork something and build on it. Cmux does tabs in panes AND panes in tabs. Hyperia does addressable panes in tabs and windows. I've tried to keep it minimalistic, which helps with flowing back and forth between different projects (I typically work on 3-4 at a time). I added a Rust sidecar, making all objects addressable over MCP, so Claude Code, Codex, or a small local model on Ollama can split panes, run commands, and read screens, with one hard rule enforced in the harness rather than the prompt: an agent can never move my focus, other than asking for permissions to access a new object. ACLs too. Hyperia also carries an agent loop that wires into it's own MCP server, so a local model in a Javascript "shell" can control resizing the terminal (handy for videos), or opening a project and setting up the agent panes.
I stay typing in a pane while the agents work in theirs, in my peripheral vision, and web panes sit right next to terminals so docs, webapps/sites and the agent chat live in the same window. Reviewing becomes glancing instead of context switching, which is the closest thing to ideal flow with prompts I've gotten out of this auto-AI stuff. Tab and pane clicks copy the address into the buffer, then I paste and issue commands referencing what I want dealt with. I have an SDR radio on my box that allows me to talk to a given pane (WIP not in the build yet). Working on getting the local agent stuff done and wired to the radio.
The upshot of this approach is enabling agents running in one tab, all mounting the same directory, with one in charge of the others. Claude Code is great at this, and it saves on the tokens it would normally use for doing it itself. I talk to Claude, or whatever I pick, and it talks to the rest of the agents and coordinates the work. I like Antigravity a lot because it moves crazy fast for coding. With Claude in control and GLM-5.2 doing auditing and explaining to me how development is going. As an example. No unseeable agent army here. No need for it, actually.
About the only thing that trips me up at the moment is having to work on Hyperia itself, which I don't do inside of it because of restarts. When I work on Hyperia, I start an agent in Windows terminal and wire it into the MCP for testing. I build installers constantly as well, and then run through the Q&A process by using it to work on other projects I'm doing.
I use Zed for code editing and viewing, but rarely. I also just open things in special sticky notes (or have the agent do it) so I understand how we're doing things. GLM-5.2 took to the planning stickys like a fish in water.
https://github.com/deepbluedynamics/hyperia
https://github.com/deepbluedynamics/nemesis8 (n8)
Both are open source, obviously. It's worth mentioning they will remain that way and will never require a service plan or any other cost. I built them because I needed it for another project I will be selling, not aimed at developers at all.
n8 implements the agent runs in containers. This is a separation of concerns - in runs in any terminal and controls the session starts and search for previous sessions (as well as monitoring the usage of tokens, CPU, network and file access). Working on the dashboard for that now, so I can easily see which files are changing, how much they changed, and what changed in them. I co-founded Loggly, so that crap is in my wheelhouse.
This isn't the tab completion model. It works great for the way my brain works, but I also think having an agentic terminal is a good move for anyone writing code and we'd all be better off if we ran agents in containers over our bare metal. It makes it way easier to see what the agent is doing (and resuming later), and allows it to do most of its work in the container, as opposed to running loose on my box..