Tar2Star in ChatGPT and Claude

Tar2Star adds five cards that open right inside a ChatGPT or Claude conversation for people who are quitting tobacco cigarettes. No account is needed to use them. They give general information, not medical advice.

The five cards

• Smoke-free progress — how many days you have gone smoke-free, cigarettes not smoked, and time and money saved since your quit date, with a slider to look further ahead. Try: "I quit smoking cigarettes 92 days ago. I used to smoke 20 a day and a pack of 20 cost $10. My goal is one full year. What have I gained so far?"
• Body timeline — 15 commonly cited health milestones, from 20 minutes to 15 years after your last cigarette. Try: "What happens to my body one week after I stop smoking?"
• Ways to quit — sourced options such as setting a quit date, cutting down, nicotine replacement and prescription options to discuss with a pharmacist or doctor, counselling and quitlines, plus the official support line for your country. Try: "How can I quit smoking cigarettes? I live in the UK."
• Nicotine withdrawal — common withdrawal symptoms, when they tend to peak, how long they usually last, and tips for coping. Try: "I stopped smoking cigarettes two days ago and I'm really irritable. Is this normal, and when will it ease?"
• Craving SOS — a guided breathing exercise (breathe in 4 seconds, hold 5, breathe out 6, for three rounds), a short countdown and a reminder of who you're quitting for, with an optional photo that stays on your device. Try: "I really want a cigarette right now. Help me get through this craving."

How to add it

ChatGPT: once Tar2Star is listed in ChatGPT's plugin directory, search for "Tar2Star" there and connect it. Before it is listed, you can add it yourself in developer mode: server address https://tar2star.com/mcp, authentication: none.

Claude: once Tar2Star is listed in the directory, open the Connectors section in Settings and search for "Tar2Star". Before it is listed, use "Add custom connector" with the same address.

Languages

Cards open in Turkish or English: Turkish when the assistant reports your conversation as Turkish (or, if it doesn't say, when your ChatGPT or Claude app language is Turkish), English otherwise. The currency shown is the one you mention. If you don't mention one, the card uses the usual currency for your language or region setting (US dollars if unknown); tell the assistant your currency to change it.

Limits

• Only for tobacco cigarettes — not for cannabis, vaping products or other substances.
• No personalised medical advice, diagnosis or medication dosing.
• The cards do not read your Tar2Star app account; they work only from what you tell the assistant in that conversation.
• In an emergency — chest pain, trouble breathing, or thoughts of self-harm — call your local emergency number.

Privacy

Tar2Star needs no account. The assistant sends our server the values a card needs, never your conversation. ChatGPT also adds technical details of its own, such as your language setting and approximate location; we use only the language and ignore the rest. We do not store or log any of it. Anonymous usage counters (which card, which assistant, language, whether it worked, timing) are kept for 90 days to measure usage and fix errors, then deleted automatically. Full details: Privacy Policy, section 2c.

Troubleshooting

• No card appears: check that Tar2Star is connected (ChatGPT: the Apps & Plugins section in Settings; Claude: Settings → Connectors), then mention quitting cigarettes in your message or ask for Tar2Star by name.
• Wrong language or currency: tell the assistant, for example "in Turkish" or "my pack costs €8".
• No money figures: share what a pack costs; the cards never guess a price.
• The photo button does nothing: some apps block file pickers inside cards; the breathing exercise works without a photo.
• Still stuck: email support@tar2star.com with the assistant you used and what you asked.

Tool reference

All five tools are read-only and need no sign-in.

Support

Questions about the cards or the app: support@tar2star.com. Privacy questions: privacy@tar2star.com. If a card looks wrong, tell us which card and what you asked.