CardGo
Browser extension that stores your personal and work context once in encrypted "cards" and reuses it across every AI chatbot.
🔗 Visit CardGo
Description
If you use more than one AI chatbot — ChatGPT for one thing, Claude for another, Gemini for a third — you've probably noticed you end up typing the same background information over and over: who you are, what you're working on, what tone you want. CardGo is a small browser add-on that lets you write that context down once, in a set of reusable "cards", and then drop it into any AI conversation with one click instead of retyping it every time.
CardGo is a Chrome extension that stores personal/professional context in seven structured card sections (Profile, Now, Goals, Guidance, Memory, Timeline, Skills) and injects them into chats with ChatGPT, Claude, Gemini, Perplexity, and Grok. Cards are encrypted client-side with AES-256-GCM before anything leaves the browser, and the encryption key is generated locally and never sent to CardGo's servers, so the company itself cannot read your stored context. An AI-assisted "dream cards" feature helps draft the cards from a short prompt, and an on-device filter strips obviously sensitive data before it's attached to a message. The extension is currently in free early access with no paid tier announced yet.
💬 Our review
The short version: if juggling several AI chatbots means re-explaining yourself every time, CardGo removes that friction — and because the encryption key stays on your machine, you're not just trusting a vendor's privacy policy, you're trusting math.
The category of "save my context so I don't repeat myself to every AI" is getting crowded — ChatGPT's own persistent memory, Claude's Projects, and browser-based prompt managers all attack the same problem, usually by locking your context inside one vendor's app. CardGo's pitch is that the cards travel with you across all five major chat platforms and stay encrypted end-to-end, which native memory features don't offer since they're proprietary to a single AI provider. The catch is that it's a young, free product with no visible business model yet — there's real risk it gets acquired, pivots, or shuts down, and you'd want to keep an export of your cards rather than treat it as a permanent home for personal data. Worth trying if you actually use 3+ AI tools regularly and are annoyed by repetitive setup; skip it if you're a single-chatbot user, since ChatGPT's or Claude's built-in memory already covers that case for free. <!-- ai-generated -->
💰 Pricing
📊 Global score
🤖 AI-enriched data
Extension Chrome gratuite en accès anticipé, aucun palier payant annoncé pour l'instant
Pros
chiffrement AES-256-GCM côté client, clé jamais envoyée au serveur
fonctionne sur 5 plateformes IA majeures (ChatGPT, Claude, Gemini, Perplexity, Grok)
7 sections de carte structurées pour organiser le contexte personnel/pro
création assistée par IA des cartes (‘dream cards’)
filtrage on-device des données sensibles avant envoi
Cons
produit jeune, gratuit sans modèle économique visible — risque d'arrêt ou de pivot
extension Chrome uniquement, pas de version Firefox/Safari mentionnée
dépend de l'insertion manuelle dans chaque chat, pas d'intégration native profonde