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CardGo
Summary
Every AI chat you open starts from scratch — you are your own role, your own constraints, your own preferences, re-typed for the fifth time that week.
CardGo is a Chrome extension that lets you save structured context cards — role, goals, preferences, current situation — and attach the right one manually before each conversation on ChatGPT, Claude, Gemini, Perplexity, or Grok. The card structure is seven named sections; you fill what is useful and skip the rest. Encryption is end-to-end by the vendor's description, with ciphertext held server-side and nothing shared until you explicitly attach. The ceiling appears fast: there is no API, no automation, and no mobile support outside a keyboard app described as coming soon. Teams managing context programmatically, or anyone not on Chrome, cannot use it at all.
Bottom line: Pick CardGo if you juggle three or more AI chat services and want separate work, health, and family contexts without re-explaining yourself every session — but if you need automated context injection, a non-Chrome browser, or any integration with your own tooling, this tool has no path forward.
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Pros
Sign in to edit- Cards are isolated by life domain — Work, Health, Family each get their own card — so a knee-injury note from your Health card never bleeds into a product design session the way a single merged custom instruction set would.
- Supports ChatGPT, Claude, Gemini, Perplexity, and Grok through one extension, which means you stop maintaining separate custom instructions in five different settings panels.
- End-to-end encryption with server-side ciphertext only, as the vendor describes it, so the context you store about sensitive health or family details is not readable by the provider — which matters when that context includes medical or financial specifics.
- The 'Now' section is designed to be overwritten rather than appended, which means your current-state context stays short and accurate instead of accumulating stale entries the way a freeform notes field does.
- Manual attachment with a visible preview before sending, so you see exactly what context reaches the model — which avoids the silent over-sharing that comes with always-on AI memory features.
Cons
Sign in to edit- The extension is Chrome-only with no stated plans for Firefox or Safari, so anyone on a non-Chrome browser cannot use it at all — they return to copy-pasting context manually or using each AI platform's native memory.
- There is no API and no automation layer, which means context is always attached by hand. Teams building internal tools, agents that run tasks on their own, or any workflow where context injection needs to happen without a human clicking a button have no integration path and will move to a system prompt management layer or a platform with API access instead.
- Mobile support is limited to a keyboard app listed as coming soon, which means anyone whose primary AI usage is on a phone gets nothing from this tool in its current state.
- Card content is limited to what fits the seven-section template — Profile, Now, Goals, Guidance, Memory, Timeline, Skills. Structured data outside that schema, such as code snippets, retrieved documents, or dynamic tool outputs, cannot be stored or injected, so teams doing retrieval-augmented work hit the format ceiling immediately and look elsewhere.
About
- Platforms
- Chrome extension
- API Available
- No
- Self-Hosted
- No
- Last Updated
- 2026-09-08T20:38:43.895Z
Best For
Who it's for
- Users of multiple AI chat services
- Maintaining consistent personal or professional context
- Privacy-conscious context management
What it does well
- Reusing role and preference details across multiple AI chats
- Switching between work, health, and family contexts without re-explaining
- Filtering sensitive details before attaching context to an AI
Integrations
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Sign Up to ContributeFrequently Asked Questions
- Is CardGo free?
- CardGo has a permanent free tier alongside paid upgrades. You can keep using a baseline version indefinitely without paying.
- Is CardGo open source?
- No — CardGo is a closed-source tool. Source code is not publicly available.
- What platforms does CardGo support?
- CardGo is available on: Chrome extension.
Curated lists that include this category
Every time you switch AI chat services, the model knows nothing about you. CardGo addresses this by letting you save reusable context cards through a Chrome extension, then attach the appropriate card at the start of a conversation. Each card is divided into seven sections — Profile, Now, Goals, Guidance, Memory, Timeline, and Skills — and empty sections are not stored. The workflow is manual and deliberate: install the extension, build a card, choose it when you open a chat. Nothing is injected automatically.
The differentiating claim is context isolation by card. Built-in AI memory — the kind ChatGPT or Claude maintains natively — lives inside one product and blends all domains into a single profile. CardGo’s model lets you keep a Work card, a Health card, and a Family card separate, attaching only the one that is relevant to the current conversation. The vendor states cards are sealed on-device and servers hold only ciphertext, with the user seeing exactly what is shared before it is sent.
CardGo fits the individual who moves between several AI chat services daily and finds that a single custom instruction set written for one context bleeds into another — a knee injury mention appearing in a product design conversation, for example. It breaks for anyone outside Chrome, anyone who wants context attached programmatically, and any team expecting an API or self-hosted option. There is no API available. Desktop and mobile keyboard apps are listed as coming soon on the vendor’s page but are not shipped. A team that needs context management baked into a CI pipeline or an agent workflow will find nothing here to build on.