
SMP — Secure Message Plugin
Securely share secrets online, automatically.
What it does
Detects passwords, tokens and secrets in messaging apps and secures them with end-to-end encrypted SecNote links. How it works? SMP runs silently in the background while you type in your favourite messaging apps. The moment it detects a secret in your message, it replaces it with a short, end-to-end encrypted secure-notes link — so the recipient can open it securely, and it expires automatically. It comes with built-in support for the most popular services and business email.
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…





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