What is a local AI agent?

Updated 2026-10-03

A local AI agent is software installed on your computer that performs tasks in your browser, desktop apps, and files. BackBrain is the Windows operator; an Android companion is optional.

Answers versus action

A chatbot can describe a task. An operator can carry out the steps and check the result. BackBrain should not call a download complete until the file exists on disk.

Local does not mean offline

Websites still need the internet. You can choose a cloud model or use a local model through Ollama, LM Studio, or a compatible endpoint. Local-only mode blocks cloud model calls; it is a setting.

What stays on the PC

Passwords and one-time codes stay on the PC and are not written into transcripts. Credential screens are not sent to a cloud model. Other task text can go to a model you chose. Local-only mode blocks cloud model calls; it is a setting, not the default.

Examples

• Download a statement from your bank’s own website.
• Walk a portal you already use, with review before submit.
• Create Excel workbooks, PowerPoint decks, and Word files on the PC.
• Organize a folder without deleting files.

Control

You can schedule a routine; sensitive steps still wait for approval; you can stop it. High-stakes decisions remain human decisions.

Everyday reading and navigation can run without a stop when you have allowed that. Send, pay, buy, and submit need your approval for that task. Related later steps do not each ask again. Delete requires a clear delete, remove, or trash request and a separate confirmation of the exact files. Organizing never means deleting. The model cannot approve its own delete.

How to evaluate a Windows AI operator

Judge an operator by observable work, not by a confident chat response. Begin with one task you can check, such as producing a document or saving an existing attachment to a chosen folder.

Give an instruction with a clear stopping point

A saved workbook is a concrete output. Open it and review the data, formulas, and formatting before using it. Creation does not guarantee that every requested detail is correct.

Ask four questions before trusting the result

1. Did the expected file actually appear on the PC?
2. Does its content match the instruction?
3. Did any send, purchase, payment, or submission receive task-level approval?
4. Can you inspect what happened in the local history?

Installed locally describes where the operator works. It does not mean every reasoning step is offline: task text may reach your chosen cloud model. Credential screens and secrets have separate protections, and local-only reasoning requires selecting that setting.

A demonstrated task is not a benchmark for every app or website. The private beta still depends on the app, login state, available tools, and the task you request.