A Chrome extension that gently says "wait a moment" before children send personal info or dangerous content on ChatGPT, X, Discord, and more.
Detect dangerous information children unknowingly share
Detects names, addresses, phone numbers, school names, email addresses, and other PII.
Detects patterns like "keep it a secret", "let's meet", "send me a photo", "move to DM".
Detects scam patterns like "easy money", "lend me your bank account", "just receive a package".
Detects info exploitable by predators: "I'm home alone", "nobody's here", "parents are away".
Not prohibition — awareness and confirmation
No scolding, no fear. Guides with "let's check this together".
Suggests safer alternatives: "Oak Elementary" → "I go to school".
Nothing sent externally. All processing stays on your child's device.
Passcode-protected parent mode for strictness and custom word settings.
ChatGPT, Claude, Gemini, X, Discord, Instagram, TikTok, YouTube, Gmail.
Shows helpline links during high-risk warnings.
Three levels of gentle guidance
Phone number detected. Sharing your phone number could lead to unwanted contact.
Your name may be included. Sharing your full name could identify you.
You're about to share a social media ID. Strangers might follow you.
Not "ban the internet" — teach safe use
Worried your child might share personal info on ChatGPT or social media?
SafePrompt Guardian doesn't ban internet use — it builds the skill to use it safely. It gently says "wait a moment" and suggests safer alternatives.
Online safety for school devices. For school districts, schools, and enterprises.
Designed with awareness of child online safety regulations including COPPA (Children's Online Privacy Protection Act) and similar international frameworks:
Just add to Chrome. No setup needed.
Click "Install"
Just add to Chrome
Works automatically on supported sites
Never. All processing stays on your child's computer. No internet communication.
No. SafePrompt Guardian is not a surveillance tool. It helps children recognize danger themselves. No conversation recording or forwarding.
完全ブロックではありません。警告を表示した上で、最終的にはお子さま自身が判断できるようにしています。ただしHigh Riskの場合は二重確認を求めます。
Supports web versions of ChatGPT, Claude, Gemini, X (Twitter), Discord, Instagram, TikTok, YouTube, and Gmail.
Freeです。将来的にSchools & Enterprise向けの管理機能を有料で提供する予定ですが、Individual利用はFreeのままです。
Last updated: March 26, 2026
SafePrompt Guardianは、ユーザーのIndividualデータを収集しません。
All text analysis is processed locally in the user's browser. Input text is never sent to external servers or stored in the browser.
保存するのは設定情報（厳しさ設定、Custom words、パスコード）のみです。Chromeのローカルストレージに保存され、外部に送信されません。
This extension makes zero external server calls. No API calls, telemetry, analytics, or ads.
This extension has no surveillance, recording, or reporting capabilities. Its purpose is to help children recognize danger and take safe action.
Email: support@safeprompt-guardian.dev