The best AI agents today work in the terminal. Claude Code and Codex open files, run tools, work for hours and check their own work.
Developers use them every day. The rest of the office does not. Not because they do not need them, but because a black screen with green text is no place for an accountant to work.
The power of terminal agents. Without the terminal.
Chat or agent: the difference in practice
| Chat app | Terminal agent | Zen Staff | |
|---|---|---|---|
| Works in your files | no, you copy | yes | yes |
| Uses real tools | limited | yes | yes |
| Long, checked tasks | no | yes | yes |
| Interface for anyone | yes | no | yes |
| Approval before anything leaves | no | no | yes |
What it means for an office
A chat gives you an answer. You paste it into Excel, fix it, save it, send it. An agent does those steps itself, in your folder.
It works where you work. The client's folder, the spreadsheet, the Word document. Not a separate window.
It checks itself. Net plus VAT has to equal the total. If it does not, the row is flagged.
You approve. Anything leaving the company waits for a click. The log keeps who asked and who approved.
Same engine. Different door.
Zen Staff has no AI model of its own. It runs the official Claude Code or Codex CLI on your computer, with your account. We add the interface, the work packs, the company memory and the approvals.
A chat talks. An agent does the work. You just approve.