A skill is only as good as its instructions, so we simply describe them here. The file opens with frontmatter: name ai-ikigai-coach, version 1.0.0, licence MIT, and a long description that determines when Claude picks the skill up. It contains not only the tidy search terms such as ikigai, four circles, find my niche and what to study, but also the complaints from DOC.01. Say something like that to Claude while the skill is loaded and it switches over by itself.
Then comes the theory, and it is shorter and more honest than you are used to from a coaching model. Ikigai is a Japanese word for the thing that makes your life worth living, and in Japan it is not a career model. It is just as much about getting up for your garden, your grandchild or your morning walk. The psychiatrist Mieko Kamiya wrote the book about it in 1966 that counts in Japan as the standard work. The four circle diagram is a later Western addition, and the file prescribes that you are honest about that if somebody asks.
The core is a run of seven fixed actions. It asks the four questions one at a time, not as a list all at once, and keeps digging per circle until there are at least five concrete answers. It refuses abstractions. It fills in nothing itself and never invents talents or interests you have not named. It looks for the overlaps and says which is strong and which stays empty.
It points at one direction with the reasoning and names the two strongest alternatives so the choice stays visible. It tests that direction for feasibility: how much time, money and risk it costs, and what goes wrong if it does not work. And it closes with an experiment that can be finished within thirty days.
Before the questioning round starts the skill runs through a short input checklist, and it only asks for what is missing: your life stage roughly, your current situation, your financial floor as an order of magnitude, the time you can free up per week to experiment, what is not up for discussion such as where you live, family or a course you are in the middle of, and what you have already tried and why it did not work out. That last point saves the most time, because it stops you being given advice you already ruled out last year.
A striking number of rules are about language. The file forbids itself dashes in running text, empty superlatives and floaty words such as flow, the universe, manifesting and higher calling. It prescribes addressing the reader directly, concrete over abstract, a figure over an adjective, and short sentences alternating with long ones. It even says that not every list may have exactly three items, to stop it sounding like AI. To write such a file yourself, you will find its full structure set out in our explanation of writing a SKILL.md.
Finally the skill has a separate review mode. Hand it a filled in ikigai diagram, a positioning document or a career plan and you get five things back: a concreteness test that marks every answer that is too abstract with the follow up question attached, a circle balance that shows which circle is overfull and which is empty, an overlap check that works out whether the chosen direction really sits in an overlap or is quietly one circle, a reality test against the time, money and obligations named, and a rewritten direction in one sentence plus a thirty day test.