Mirror, masked folders
Pro

With Mirror, your agents access your folders, never your data.

Two synced folders: yours with your real files, the agent's with masked copies. That's all your AI coworker ever sees. What it creates appears in your folder, with your real values restored. Word, Excel, PowerPoint, PDF and code.

Free desktop app for macOS and Windows.

100% local. No account, no card.

Your folder
Veridian
Clients › Veridian
W Veridian contract.docx just now
X Fee schedule 2026.xlsx
W Summary — Veridian.docx from agent
in sync
What the agent sees
mirror
quieta › mirror
W quieta-1.docx masked
X quieta-2.xlsx masked
W quieta-3.docx ··· agent wrote this

Word · Excel · PowerPoint · PDF · code — in real time, entirely on your machine

In practice

Your agents do the work. Your data stays masked.

Legal

A data room, a risk memo.

The agent drafts from your contracts. Not a single real party name reaches it.

HR

300 resumes, a shortlist.

The agent sorts and ranks candidates. Names and contact details stay masked.

Healthcare

Clinical reports, a summary.

The agent analyzes and summarizes your cases. Names, dates and identifiers stay masked.

Consulting

Client data, deliverables.

The agent produces slides and analyses. Your NDA holds on every deliverable.

AI and security: an agent doesn't just see a prompt; it sees your whole workspace.

A chatbot saw what you pasted. An AI coworker opens your local files, moves through your folders and reads your Office documents to do the work. Client names, contracts, HR records, patient files: all of it can travel to the AI, or leak through a vulnerable integration.

Quieta cuts the risk at the source: it masks your folders before the agent reads them.

40+

vulnerabilities filed against MCP implementations between January and April 2026.

source: Vulnerable MCP Project
71%

of organizations don't feel ready to secure agentic AI.

source: Cisco State of AI Security 2026
How it works

Automatic, two-way sync.

01

Sync in

Everything you drop in your folder appears, masked, in the agent's folder. In real time, with nothing to do on your end.

02

The agent works on its own

It reads, edits files and creates new ones, always on masked copies. It only ever sees pseudonyms.

03

Sync back

Every change syncs back to your folder with your real values: edited files as well as new files the agent creates.

Compatibility

Works with your agents.

Any agent that reads a local folder.
If it can open files on your machine, Mirror covers it.
AI coworkers
CClaude Cowork CCodex for Work MMistral Work

More integrations coming.

Gate
Coming soon

An MCP server for your agent pipelines.

Mirror is built for agents working alongside you, inside your folders. Gate goes further: it exposes Quieta's masking as an MCP server, so your agents running in code mask your data at the source and never see your real values.

In the works.

Start with Mirror today Download free
FAQ

Your questions, answered.

Claude Cowork, Mistral Work, Codex for Work, and any AI agent that reads a local folder on your machine.
Because it ships with a complete AI model that runs locally on your machine to detect and mask your sensitive data. That model is stored on your disk and never sent anywhere, and it is what makes the whole thing work with no cloud dependency. The trade-off is size: one download, no ongoing data transfer after that.
No. The agent only ever sees the masked folder; the table linking pseudonyms to real values never leaves your machine. It never has the key.
By default, no: they run with your account's rights and see your whole disk. Config-level scoping (AGENTS.md, profiles) constrains the tools but isn't airtight; only a sandbox (container, VM) truly confines them. Quieta takes another angle: Mirror has the agent work on masked copies, so what it reads and sends never carries your real values. Ideally, combine both.
They come back to you with your real values restored, automatically, locally. You get complete, usable files, never pseudonyms.
Word, Excel, PowerPoint, PDF and code, synced in real time in both directions.
A gateway masks server-side: your raw data still passes through a third party. Mirror masks on your machine, before anything is sent. Nothing passes through.
Yes. Mirror covers your agents and folders, the extension covers AI in your browser. Both run locally, at the same time.
No. Detection, masking and restoring all run on your machine. There is no proxy and no cloud step; unplug your Wi-Fi and Quieta keeps working.

Work with AI without exposing your data.

Wherever you work with AI, Quieta is with you.