AILC-01 · Finance & accounting
/number-check
Ties every number in an AI draft back to the file it came from, and recomputes every total and percentage.
“Check the numbers in this report against the P&L.”
151 lines
Free skill library · v2 · 6 Nov 2026
24 Claude skills for people who work with money.
Check the numbers, write the commentary, negotiate the deal, talk about money at home. Written by a finance professor, in plain text you can read before you install.
See the 12 I'd install first ↓One email opens the whole library. New skills arrive every week.
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a professor's pick
The 12 skills I'd install first.
If you only install twelve, install these. They cover the mistakes I see most: unchecked numbers, AI-sounding posts, and money decisions made in a hurry.
- 01
/number-check
Ties every number in an AI draft back to the file it came from, and recomputes every total and percentage.
- 02
/claim-check
Checks every fact in a post or email against the original source before you publish, with a link for each verdict.
- 03
/de-robot
Removes the AI accent from your writing (em dashes, "it's not X, it's Y", empty endings) and keeps every fact.
- 04
/step-coach
Walks you from "I don't know how" to a finished result, one small step at a time, checking each works.
- 05
/task-to-skill
Interviews you about a task you repeat every week and turns it into your own skill, tested on a real past example.
- 06
/hook-lab
Writes ten first lines for your LinkedIn post, scores them, and tells you which to post and which to test next.
- 07
/redact-first
Strips names, IBANs, tax numbers and salaries before a file leaves your desk, and keeps a private key to put them back.
- 08
/fomo-brake
Puts ten minutes between a money urge and the click: the biases at work, the worst case in euros, a cooling-off rule.
- 09
/money-talk
Plans a hard money conversation with a partner, child or parent: the shared goal, the first sentence, the questions to ask.
- 10
/deal-room
A one-page negotiation plan: your walk-away point, their real interests, the opening line and answers to five objections.
- 11
/stock-one-pager
A one-page note with the bull and the bear case argued with equal force, dated sources, and no tips.
- 12
/plain-money
Explains money to non-finance readers on the first read, without dropping or changing a single number.
Browse by job
Five drawers, one for each kind of work. Open the one that looks like your week.
Money & emotions4 skillsMoney decisions are made with feelings first. For families, teams and your own freedom./fomo-brake/money-talk/hard-newsFinance & accounting6 skillsReports, budgets, models and the numbers you sign your name under./number-check/redact-first/plain-moneyInvesting & markets4 skillsRead companies, check your portfolio, and slow down before the big click./stock-one-pager/annual-report-xray/portfolio-checkupCareer & negotiation5 skillsRaises, negotiations, and learning AI one step at a time./step-coach/task-to-skill/deal-roomWriting & LinkedIn5 skillsPosts, hooks and talks that sound like you and survive a fact-check./claim-check/de-robot/hook-lab
Every skill in the library
Filter by drawer. Newest skills join at the end.
- AILC-01
/number-check
Ties every number in an AI draft back to the file it came from, and recomputes every total and percentage.
Ask it: “Check the numbers in this report against the P&L.”
- AILC-02
/claim-check
Checks every fact in a post or email against the original source before you publish, with a link for each verdict.
Ask it: “Fact-check this post before I publish it.”
- AILC-03
/de-robot
Removes the AI accent from your writing (em dashes, "it's not X, it's Y", empty endings) and keeps every fact.
Ask it: “Make this LinkedIn post sound like me, not ChatGPT.”
- AILC-04
/step-coach
Walks you from "I don't know how" to a finished result, one small step at a time, checking each works.
Ask it: “Walk me through setting up a Claude project for my reports.”
- AILC-05
/task-to-skill
Interviews you about a task you repeat every week and turns it into your own skill, tested on a real past example.
Ask it: “Make my monthly client report a skill.”
- AILC-06
/hook-lab
Writes ten first lines for your LinkedIn post, scores them, and tells you which to post and which to test next.
Ask it: “Give me a better first line for this post.”
- AILC-07
/redact-first
Strips names, IBANs, tax numbers and salaries before a file leaves your desk, and keeps a private key to put them back.
Ask it: “Is this payroll extract safe to paste? Clean it.”
- AILC-08
/fomo-brake
Puts ten minutes between a money urge and the click: the biases at work, the worst case in euros, a cooling-off rule.
Ask it: “Everyone is buying this stock. Should I go in now?”
- AILC-09
/money-talk
Plans a hard money conversation with a partner, child or parent: the shared goal, the first sentence, the questions to ask.
Ask it: “Help me talk to my partner about saving for a house.”
- AILC-10
/deal-room
A one-page negotiation plan: your walk-away point, their real interests, the opening line and answers to five objections.
Ask it: “The client wants 30% off. Prep me for the call.”
- AILC-11
/stock-one-pager
A one-page note with the bull and the bear case argued with equal force, dated sources, and no tips.
Ask it: “Give me the bull and bear case on this company.”
- AILC-12
/plain-money
Explains money to non-finance readers on the first read, without dropping or changing a single number.
Ask it: “Explain this cash problem to the sales director.”
- AILC-13
/annual-report-xray
Reads an annual report from the back: ten numbers, eleven red-flag checks, a page reference for every figure.
Ask it: “X-ray this annual report. What is buried in the notes?”
- AILC-14
/deck-from-numbers
Slide titles that state the conclusion, one chart per slide, and the decision on slide one.
Ask it: “Turn these Q3 results into a six-slide board deck.”
- AILC-15
/hard-news
Helps a leader share bad financial news with the team: the fact first, what changes for them, straight answers, no false promises.
Ask it: “I have to tell my team there are no bonuses this year.”
- AILC-16
/model-audit
Finds the twelve errors that silently break a spreadsheet model, with the cell address and the fixed formula.
Ask it: “Audit my forecast before it goes to the bank.”
- AILC-17
/money-mirror
Finds the feelings behind your spending in your own transactions, names the bias in plain words, and suggests one 14-day experiment.
Ask it: “Why do I always overspend on Sundays? Here's my card export.”
- AILC-18
/pick-up-note
Turns a long chat into a one-page note so a new chat, a colleague or future you continues without losing a decision.
Ask it: “Summarise where we are so I can continue tomorrow.”
- AILC-19
/portfolio-checkup
Checks your portfolio against your own rules: hidden overlap between funds, fees in euros, concentration, currency.
Ask it: “Do my ETFs overlap? Check my portfolio.”
- AILC-20
/raise-case
Builds the case for a raise like a capital request: results in money, a named market range, and answers to the no.
Ask it: “Help me ask for a raise in my review next month.”
- AILC-21
/report-to-post
Turns a long report or study into a LinkedIn post: one striking finding, what it means for your reader, full credit.
Ask it: “Make a LinkedIn post from this OECD report.”
- AILC-22
/source-sifter
Reads a pile of reports and tells you what the evidence agrees on, where it splits, and how strong each claim is.
Ask it: “Synthesise these five reports on AI adoption.”
- AILC-23
/talk-to-deck
Turns your talk or workshop outline into slides with one idea each, titles that carry the message, and speaker notes.
Ask it: “Turn my workshop outline into a 20-minute deck.”
- AILC-24
/variance-story
Turns budget vs actual into commentary a CFO reads: what moved, why, and whether it comes back next month.
Ask it: “Write the March commentary from this budget vs actual.”
Installed in about two minutes.
- 1Download a skill. Keep the .zip, do not unzip it.
- 2In Claude: Settings, then Capabilities. Switch Skills on.
- 3In the Skills section, upload the .zip. One skill per file.
- 4Ask normally ("check the numbers in this report") or type its name, like /number-check.
Menu names move between app versions. If the path differs, look for "Skills".
a note from Emanuel
Every skill is built the same way.
I teach finance, and I grade the same mistakes every term: numbers nobody checked, commentary that repeats the table, a bull case with no bear. AI makes all three faster. So every skill here has five parts, in this order:
Emanuel Balsa, PhD · professor of behavioral finance, ISCAL Lisbon
- 01Why it existsthe mistake it prevents, and what that mistake costs
- 02A workflownumbered steps, in the order a professional really works
- 03A fixed outputthe exact table or template you get back, every time
- 04Judgment ruleswhere AI goes wrong on this job, and what to do instead
- 05A worked exampleone realistic case, before and after
Plain text. Nothing runs on your computer.
Each download is one folder with one SKILL.md file inside. No scripts, no code, no tracking. Read every line on its page before you download it, or change it to fit your team.
24 × SKILL.md · 2978 lines
# Number check In finance work one wrong figure costs more than the whole draft saved. A reader who finds a single total that does not add up stops trusting every other number on the page, and in a board pack, an audit file or a client email that loss of trust has a price. The danger is that a wrong AI number looks exactly like a right one: same font, same decimals, same confident sentence around it. Language models are good at writing about numbers and unreliable at carrying them. They round, transpose digits, mix up periods, average averages and invent a plausible figure when a cell is empty. So this skill never asks "does this look right?". It asks "where did this come from, and can I get the same number again?". Every figure either ties to a source or gets flagged. ## Workflow …
The whole library, in one zip.
24 skills. Every skill plus a one-page START-HERE guide.
One email opens the whole library. New skills arrive every week.
Want to use these on your own work, with a teacher?
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