You paste a stack trace, a config file, a client's email into ChatGPT — and an API key or an IBAN rides along. Proxia inspects every prompt on your own device, masks what's sensitive, and restores it in the reply. Nothing is ever sent to a server.
Proxia prevents secrets and personal data from reaching AI tools, locally, before sending.
No account, licence server, payment method or product telemetry.
Watch — it's already inspecting the panel. Type your own, or load an example.
Find your workflow, then explore the situations that matter to your profession.
Prepare a prompt from a file, a client record or a code excerpt.
Explore the scenarios02Review sensitive information before an Outlook message leaves your device.
Explore the scenarios03Inspect and mask a worksheet before an export or a handover.
Explore the scenarios04Keep sensitive values masked in supported web pages during a meeting.
Explore the scenariosTo check a prompt, a cloud filter has to receive it first — so your secrets pass through someone else's server on the way to being "protected." Proxia's engine runs inside your browser. The comparison is the whole product:
A second copy of every prompt now lives somewhere you don't control. The tool meant to protect your data is itself a place it can leak.
A pure Rust core compiled to WebAssembly inspects the prompt locally. No telemetry, no beacons. The only thing that ever leaves is what you decide to send.
Regex plus algorithmic validation — Luhn, IBAN mod-97, national-ID checksums — keeps false positives low. A random 16-digit number isn't a card unless it checks out.
API keys and tokens, private-key blocks, passwords in config, connection strings.
Bank details validated, not just pattern-matched.
National IDs with real checksums, plus contact data.
Not just your data leaving — attacks coming in.
Type or paste into ChatGPT, Claude, Gemini — whatever you already use. Proxia stays out of the way.
In ~40 ms, on-device, before a single byte leaves. If it's clean, you never notice.
One click swaps secrets for tokens and restores them in the reply. Your call, every time.
No analytics, no beacons, no phone-home. Your prompts are never transmitted anywhere.
Manage protection settings on your device without sharing your prompts or inspection results with ANANKELIS SAS.
Proxia flags, masks, and proposes. It never silently deletes your text — you keep the last word.
Agents don't just chat — they run shell commands, send email, hit APIs. A secret leaks through a tool call's arguments. Proxia inspects those and blocks a credential heading into a dangerous tool — on the browser, and directly on the MCP tool-call path.
Keep control of sensitive data when you use AI. Find the setup that fits your browser in the installation guide.
Features and availability vary by platform. Check the guide for the version you install.
Free protects browser traffic to LLMs, agents and APIs. Plus adds Gmail, Outlook web, unlimited personal terms and web-page masking.
Desktop Outlook and email clients, Excel analysis and masking, automatic rule updates and individual dashboards.
All Pro features, central policy management, optional technical reporting, centralized logs, export and an educational portal.
Install the free browser extension, or explore the setup options for Outlook, Git and local MCP servers.