SkillbookTry free skill

SkillbookPractical AI skillsfor real work.

Find a workflow, add your context, and run it in ChatGPT, Claude, or Claude Code. Use a skill once, or install it permanently as agent behavior.

1
Pick a job
2
Fill the blanks
3
Run or install
From the catalog
Lifestyle
Find a restaurant reservation
Lifestyle
Free

Book a flight without surprises

Turn dates, budget, bags, timing, and preferences into a flight shortlist worth booking.

Example input

SFO to JFK next Tuesday, carry-on only, land before 6pm.

Expected output

Ranked flights with fee traps, timing risk, and booking handoff.

Read a 60-page PDF in 4 minutesDraft a cold email that doesn't feel templatedSpot a phishing attempt before you clickAudit a SaaS bill you stopped reading years agoDecode a token whitepaper in plain EnglishDebug a stack trace without guessingPlan your week in fiveTurn work into resume bulletsPrepare for a doctor appointmentBuild a moving checklistMake flashcards from notesRead a 60-page PDF in 4 minutesDraft a cold email that doesn't feel templatedSpot a phishing attempt before you clickAudit a SaaS bill you stopped reading years agoDecode a token whitepaper in plain EnglishDebug a stack trace without guessingPlan your week in fiveTurn work into resume bulletsPrepare for a doctor appointmentBuild a moving checklistMake flashcards from notes
00Beginner pack
New to AI? Start here.

Start with everyday skills.
Graduate to work systems.

Pick one useful task, add your context, and run it in ChatGPT, Claude, or Claude Code. No prompt expertise needed. Everyday skills are often the easiest first win because the output is personal and easy to judge.

Many people start with trips, restaurants, planning, or safety because the result is intuitive. Once the loop clicks, work skills use the same pattern: context in, structured output out, human approval before anything important.

PROOF, NOT PROMISES

See what a Pro skill actually produces.

Start with the flagship target account workflow: a complete BD research sprint that turns a company list into ranked accounts, fit logic, owner hypotheses, next moves, and outreach angles. Batch 003 adds public-market and financial-analysis workflows for earnings, filings, valuation sanity checks, stock theses, ETFs, and revenue quality. Founding Pro includes 286 complete Pro workflows in the delivery library, public catalog previews before purchase, and future Pro batches included for founding customers.

Flagship samplePro

Build a target account list

Input
Sponsors for a 75-person AI founder dinner in SF.

A ranked sponsor table with fit rationale, likely owner, buying signal, first angle, confidence, exclusions, and next enrichment step.

See skill →
Sample 02Pro

Compare three vendors from public pages

Input
Three support tools, pricing pages, must-haves, current stack, and decision timeline.

A buyer-ready comparison with claim audit, pricing clarity, integration risk, buying committee checklist, demo script, and trial plan.

See skill →
Sample 03Pro

Map regulatory requirements

Input
A product plan, geography, industry, current launch path, and risk tolerance.

A compliance-prep map with likely rule areas, triggers, low-regret next steps, official-source checks, and a counsel handoff template.

See skill →
Sample 04Pro

Build a source dossier

Input
A research question, scattered sources, decision context, citation needs, and constraints.

An evidence pack with original-vs-derivative source ranking, claim support, caveats, confidence, and next verification checks.

See skill →
Sample 05Pro

Turn research into a memo

Input
Findings, sources, open questions, audience, decision needed, and deadline.

A decision-ready memo with executive summary, evidence, caveats, options, recommendation, owner, and next steps.

See skill →
Sample 06Pro

Build a competitor teardown

Input
Two competitors selling into the same developer audience.

A battlecard-style teardown: positioning, proof, weak claims, pricing notes, target customer, and ways to sell against them without sounding petty.

See skill →
Sample 07Pro

Create an account plan

Input
A target account, current relationship, product fit, buyer context, and goal.

A practical account plan with stakeholder map, likely pains, proof angle, entry points, risks, next moves, and 30-day path.

See skill →
Sample 08Pro

Write a proposal in your voice

Input
Call notes, rough offer, buyer objections, and example writing.

A buyer-ready proposal with decision context, scoped offer, proof, risks, next steps, and a tone pass against the user's own examples.

See skill →
Sample 09Pro

Audit your AI tool stack

Input
Tools in use, teams with access, data types, integrations, policies, and concerns.

A risk review showing data exposure, access gaps, policy misses, redundant tools, quick fixes, and escalation questions.

See skill →
03For the curious

What's a skill, exactly?

A skill is not magic words. It's a reusable operating procedure for an AI assistant. The file teaches the model how to do one specific job the way a careful person would do it: what to ask, what to ignore, what to produce, and when to keep a human in the loop. That works for everyday tasks like trips and safety checks, and for work tasks like research, sales, writing, and software planning.

1.
It asks for context

The blanks tell the assistant what details matter before it starts.

2.
It filters noise

The rules tell the assistant what to ignore, verify, or hand back to you.

3.
It shapes the output

The format turns a loose chat into a useful plan, brief, draft, or decision aid.

04The file

You can inspect the whole thing.

Skillbook teaches by showing its work. Free skills reveal the full file. Pro skills show enough of the structure to understand the method before you unlock the library. Every full skill can run once in ChatGPT or Claude, or become reusable behavior in Claude Code, Claude Projects, or a Custom GPT.

cold-email.skill.md1.4 KB · run or install
---
name: Draft a cold email
for: Founders, BD
---

# Role
You write cold emails that sound like a person,
not like a template. Specific, short, polite, useful.

# Steps
1. Read what I tell you about them.
2. Find one true thing to lead with.
3. Make the ask in one sentence.
4. Sign off without flourish.

# Rules
- Never say "I hope this finds you well."
- Never list more than one ask.
- Under 90 words.
- If you don't have a real reason to write,
  say so and stop.
That's the whole thing
07Membership

Start free.
Stay if it earns it.

Free is the intentional starter track: everyday and work skills that are useful on their own, and good enough to learn the loop before Pro. Pro includes the founding library: 286 complete Pro workflows in the delivery library, public catalog previews before purchase, and future Pro batches included for founding customers.

Free starter library
$0 forever

An intentional beginner track with everyday and work skills that are useful on their own.

  • 46 starter skills across all 13 shelves
  • Everyday, lifestyle, safety, research, writing, and work skills
  • No prompt expertise or signup required
  • Markdown and .skill formats
  • Quick-start guide for non-technical folks
  • Updated when the format changes
Get the free shelf
Most pick this
Founding Pro Library
$199 lifetime

286 complete Pro workflows in the delivery library, public catalog previews before purchase, and future Pro batches included for founding customers.

  • Complete workflows for sales, research, career, money, safety, and operator work
  • One full flagship Pro sample you can inspect before paying
  • The full 332-skill catalog remains browsable for discovery
  • Polished output examples for business and personal workflows
  • Install formats for ChatGPT, Claude, and Claude Code
  • Future Pro batches included for founding customers
  • Founding lifetime access, no monthly meter
Get lifetime access
Workflow setup
$999 one-time

A done-with-you setup to adapt the library to real work and leave with a usable operating system.

  • 90-minute working session
  • Custom skill picks for your role
  • Five skills tailored to your workflow
  • Team setup in ChatGPT, Claude, or Claude Code
  • First workflow run reviewed together
  • Two follow-up reviews
Book a setup

No auth, no dashboard, no nonsense. Read the principles →

08Early access
Pro early access

Tell us what should be worth paying for.

Get updates as the Pro workflow library fills in. This also tells us which bundles and work products to polish first.

No account needed. No dashboard detour.

09For the skeptical
A

This is not a prompt marketplace.

A prompt is usually a wish. A skill is a reusable operating procedure: inputs, process, boundaries, examples, and the shape of the output.

B

You do not need to become an AI person.

Pick the job you were already going to do, fill in the blanks, then run it in chat or install it as reusable behavior.

C

Free means genuinely useful.

The starter library is deliberately beginner-friendly: everyday tasks, work tasks, and enough structure to learn the loop without paying first.

D

The file format is the product.

Showing the raw .skill.md body matters because you can inspect it, edit it, save it, and understand what the assistant is being asked to do.

E

Human approval stays in the loop.

The best agent workflows are not reckless automation. They are scoped, reversible, and clear about when you should approve the next step.

Start now

Pick one skill.
Use it on something real today.

That's the whole pitch. If a free skill does not pay for itself in twenty minutes of saved work, the rest are not worth your money either.