GitHub
Local sensitive data & API key blocker for ChatGPT.
GitHub launched on June 24, 2026 with 2 votes.
What it does
PromptGuard AI is a lightweight, 100% local Chrome extension built for anyone who uses ChatGPT but worries about data privacy. It instantly scans your inputs completely inside your browser, automatically blocking passwords, credit card numbers, confidential text, or API keys before they ever leave your computer. Because security tools should be transparent, it is fully open-source. Keep your personal data safe and enjoy AI without the anxiety!
Contribute to chako0820/prompt-guard-ai development by creating an account on GitHub.
PromptGuard AI is a lightweight, privacy-focused Chrome extension designed to prevent accidental data leaks while using ChatGPT and other LLM platforms. It scans your inputs locally and blocks sensitive information—such as API keys, credentials, or personally identifiable information (PII)—before it ever leaves your browser. This project was built to make AI environments safer for everyone. If you find any bugs or have feature requests, please feel free to open an Issuefrom github.com
Does a similar job
all alternatives →
Local Privacy Firewall-blocks PII and secrets before ChatGPT sees themDec 2025 · github.com · ▲111OP 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…

AI Safeguard2025 · aisafeguard.co.uk · ▲14Prevent sensitive data leaks in popular LLM's like ChatGPT
Local Browser AI2025 · blog.alexewerlof.com · ▲15Using the new Prompt API to build a free open source privacy-first chat extension that runs on Chrome or Edge on Linux, Mac, Windows and ChromeOS
AI Safe Chat GuardFeb 2026 · chromewebstore.google.com · ▲3Stop leaking sensitive data to AI chatbots
More ai this month
the category →



Paintings by AI models: programs run through a simulation of oil paint.
AI · 20d ago · stillwet.art

PixVerse R2▲381A real-time world model you can explore and change
AI · 28d ago · world.pixverse.video
Source: Product Hunt launch ↗
Launched alongside, June 2026
the whole month →
Fundraisly▲1,537AI fundraising agent that finds investors and books meetings
AI · Jun 2026 · fundraisly.com
Homebrew 6.0.0▲1,481Today, I’m proud to announce Homebrew 6.0.0. The most significant changes since 5.1.0 are a new tap trust security mechanism, the new faster, smaller, default internal Homebrew JSON API, sandboxing on Linux, better defaults informed by our user survey, many brew bundle improvements, improved performance and initial support for macOS 27 (Golden Gate). Happy to discuss any questions here!
Dev tools · Jun 2026 · brew.sh

Hi HN! I was super frustrated at apps like tiktok and wechat preventing me from saving or downloading the animated gifs, so I made a little tool to turn a screen recording into a slack-sized emoji. Hope you get some value from this!
Life & fun · Jun 2026 · vorpus.github.io



Search 18 years of Hacker News and chart how any topic, tool, or person trended. Overlay terms to compare their rise and fall across 45M posts and comments.
Life & fun · Jun 2026 · hackernewstrends.com