WHAT AN AI SKILL CARD IS
A file you hand your AI that teaches it one job, well.
Your AI is clever but it does not know how you keep books. A skill card fixes that. It is one small file — save it into Claude, ChatGPT or Lundr once — and from then on your AI does this job the way a good bookkeeper would: it knows what to do, what never to do, and it shows its work.
The card you are looking at is that same file, drawn so you can read it. The top says when it wakes up. The middle says the moves it makes and the lines it will not cross. The bottom says how it was proven and what it costs. The dotted block is its fingerprint: change one letter of the file and the pattern changes, so what you see is exactly what your AI got.
Nothing about it is a card you pay with. It is closer to a recipe card for your AI — except this one is checked, scored and signed.
THE PARTS OF THE CARD, IF YOU WANT THEM
The situation that makes your AI reach for it.
The moves it makes, numbered, so you could do them by hand.
What it refuses. A card with no refusals is not finished.
The fingerprint of the skill file, drawn as holes.
The run someone watched, the score out of a hundred, the mark.
The human face is this card; the machine face is card.json beside SKILL.md.
The format is open and printed: THE SKILL CARD FORMAT · LSC-1, from Lund Studio.
Four taps, and Claude keeps the books your way.
The Year — the card that opens after the test — ships the Funance Skill Card as a .skill file. Saving it puts the ledger’s method into your own Claude, permanently.
The Year, when it opens, arrives by email with FUNANCE.skill inside the package.
Drop the file into a Claude chat and tap Save skill — or add it under Settings › Capabilities › Skills (Customize, in the desktop app).
It appears in your Personal skills, on by default. Add it to a project, or hand it to Claude Code. It never expires and nothing phones home.
Say what happened. Claude names the seat, asks what your books must agree with, builds the entry, and proves it — the ledger’s way, every time.
The card is an Agent Skill on the open standard, so the same folder loads unmodified in ChatGPT and Codex, Copilot, Cursor, Gemini CLI and the rest; the studio has run it in Claude, not yet in the others.
One card. Three chairs.
The app is one file that runs in your browser and keeps your books on your machine. The Card is the same work taught to an AI — what to ask first, what to build, what to prove, what never to claim about your money. It seats in three places.
A native skill: save it once and it stays in your account; add it to a project or hand it to Claude Code. The studio runs its own books on it; first order on record August 13, 2026.
The keeper seats in the studio’s own AI at lundr.ai and knows the ledger’s way of working.
The card files are plain Markdown. Load CARD.md as a custom GPT’s instructions and the rest as its knowledge, and the GPT works the card’s way. Said plainly: the studio hasn’t yet run the Funance Skill Card in ChatGPT itself.