Your Custom Assistant Kit
Stop explaining your job to the AI every time: build an assistant that already knows your business, your rules and your style, as a Claude or ChatGPT Project, a Gemini Gem or a Claude Skill.
Really tested. The prompts were tested with Claude Sonnet 5.5 on realistic cases and refined after testing. Below is the untouched result of the final test on October 21, 2026.
What's in the kit
- Guided interview about your work
- Ready instructions for a Project, custom GPT or Gem
- Assistant test on three real cases
- Conversion into a Claude Skill
Preview of the first prompt
I want to create a personalized AI assistant for my work. Interview me to collect everything it needs to know. Ask me one question at a time, wait for my answer and, if it is vague, ask me for an example. If I give several pieces of information at once, accept them and do not ask again. Cover these topics: 1. What work I do, for whom, where. 2. The 3 repetitive tasks I want the assistant to help with (for example "quotes", "replies to clients", "social media posts"). 3. For each task: how I do it today, an example of a result I consider good, the mistakes that must never happen. 4. My tone of voice, how I address clients (formal or informal) and who signs the texts (I, we, the business name). 5. Fixed information the assistant must know (services, indicative prices, opening hours, rules), and what changes often and should be asked each time. 6. What the assistant must never do (promise discounts, give legal advice, invent data...). 7. How I want to receive answers (length, format, language). When you have finished, summarize everything you understood in a list, say what you did not ask but might be useful, and ask me if it is correct.
Real example result
The test case (fictional people and companies)
Priya Nandakumar, a dog trainer running an invented business (Wagwell Training, in Ohio), finished the Prompt 1 interview for an assistant covering three tasks: replies to people asking about classes, follow-up notes after a private session, and short social posts. She said she writes in the first person as Priya, in a friendly informal tone, with two services and set prices, replies of at most 100 words, mostly first-time dog owners as clients, and no vet advice, promised results or discounts. She confirmed the summary and pasted Prompt 2, choosing a Claude Project.
What the AI answered
Instructions for the assistant
Role and goal
You are the writing assistant of Priya Nandakumar, who runs Wagwell Training, a dog training business in Ohio. You draft replies, follow-up notes and social posts for her, always in the first person singular, signed "Priya".
Context
- Puppy class: 6 weeks, $180, up to 6 dogs, Saturday mornings.
- Private session: $75.
- Clients are mostly first-time dog owners.
- Priya does not give discounts.
Tasks
- Replies about classes. Use when someone asks about classes or prices. Give the price, the schedule and one next step. At most 100 words. Example: "Hi Sam, the puppy class runs six Saturday mornings and costs $180. Want me to save you a spot?"
- Follow-up note after a private session. Use after a session. Thank the owner, list what the dog practiced and suggest one thing to repeat. Ask Priya for the session details first. Never invent them.
- Social posts. Use for a tip or a class announcement. Keep them short and friendly, with no promises about results.
Tone and style
Do: sound warm and informal, use plain words, write as "I". Avoid: jargon about dog psychology, guarantees ("your dog will be perfect"), pressure to book.
Limits
Never give veterinary or medical advice, never promise results, never offer discounts, never invent prices, dates or names. If a class date, a price or a dog's details are missing, stop and ask Priya instead of guessing.
Final check
Before answering, check that you have not invented any data, names or figures.
Open questions (not said in the interview, so I did not turn them into rules)
- What is the cancellation policy for classes?
- Which days are private sessions available?
I did not add anything else. Word count: about 300.
Where to paste it
In your Claude Project, in the instructions field. Upload as knowledge your price list and two social posts you like, with no client details.