Sentinelle PII
Stop leaking personal data to ChatGPT, Claude & Gemini
What it does
Every day, employees paste emails, phone numbers and IBANs into AI chatbots without realizing it. Sentinelle PII detects and masks sensitive data in real-time before it reaches the AI. The AI works with anonymous tokens, then real data is restored in the response. Fully transparent. 100% local — no data leaves your browser ChatGPT, Claude, Gemini + custom domains Scans file uploads (CSV, Excel, Word) Team dashboard with GDPR compliance reports Free tier, no credit card
Does the same job
all alternatives →- LPLocal Privacy Firewall-blocks PII and secrets before ChatGPT sees themDec 2025 · github.com · ▲111
OP here. I built this because I recently caught myself almost pasting a block of logs containing AWS keys into Claude. The Problem: I need the reasoning capabilities of cloud models (GPT/Claude/Gemini), but I can't trust myself not to accidentally leak PII or secrets. The Solution: A Chrome extension that acts as a local middleware. It intercepts the prompt and runs a local BERT model (via a Python FastAPI backend) to scrub names, emails, and keys before the request leaves the browser. A few notes up front (to set expectations clearly): Everything runs 100% locally. Regex detection…
anonym.legal for ChromeMar 2026 · anonym.legal · ▲1Anonymize PII before sending to ChatGPT, Claude & Gemini
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