I get this question two or three times a week, so I am writing it down once.
"You sell a Cheat Sheet at $14.99 and a Skills Library at $19. They both promise to make Claude Code better. Which do I actually need?"
The honest answer is that they solve different problems, and for most people the right answer is one of them, not both, not neither. This post walks through what is in each, who I have actually seen get value from which, and where the edge cases live.
No upsell ladder, no "the bundle is the real winner" line. Just the breakdown.
The 30-second answer
If you only have a minute, here is the short version.
Buy the Cheat Sheet ($14.99 Full, $24.99 Pro) if your bottleneck is how you write prompts. The Cheat Sheet is 160+ tested prompt codes (L99, OODA, ARTIFACTS, /skeptic, /blindspots, /decompose, and 150+ more) with before/after output proof and when-not-to-use warnings for each. You are buying a reference you ctrl-F.
Buy the Skills Library ($19 lifetime) if your bottleneck is Claude does not know your domain well enough. The Skills Library is 845 verified .md skill files that you drop into ~/.claude/skills/, and Claude Code auto-activates the relevant one based on what you are working on. You are buying domain knowledge files Claude reads on demand, not prompts you paste.
Both are one-time payments, lifetime updates, no subscription. The free 40-page guide at /guide is enough for many people and you should start there.
What is actually inside the Cheat Sheet
The Cheat Sheet comes in three tiers.
Lite ($10) is 50 of the most-used codes with a before/after example for each and a markdown download. This is the "I just want the headline list" tier.
Full ($14.99) unlocks all 160+ codes across 12 categories (writing, reasoning, coding, research, learning, etc.), every code with its before/after output, when-not-to-use warnings so you know where each one backfires, code combos that stack (the L99 + /skeptic pattern people email me about), 10 workflow playbooks (cold email, debug session, customer interview synthesis, etc.), and a paste-ready Combo Generator with 20 templates.
Pro ($24.99) adds the Deep Dive section: the 40 highest-value codes with verified test methodology (controlled A/B against a no-prefix baseline, blind reviewers, token deltas), classification (reasoning-shifter vs structural vs placebo), lookalike-placebo warnings (codes that look like L99 but do nothing), 20 bonus reusable prompt templates, and a 30-day direct email channel where you can ask me anything. The email channel is the part people consistently say justifies Pro on its own.
What the Cheat Sheet does NOT contain: code that runs, scripts you install, integrations, or skill files. It is a reference document. PDF and markdown both included, lifetime updates as new codes are tested and the existing ones rot or get sharper across model updates.
What is actually inside the Skills Library
The Skills Library is 2,390 .md skill files split into two buckets.
1,545 community-attributed skills are free for everyone since May 2 2026. These are MIT and Apache-licensed work from upstream contributors (antigravity, vibeship-spawner-skills, and many individual authors). They live at clskillshub.com/free as a single ZIP, full attribution preserved in each file's YAML frontmatter.
845 verified skills are paid ($19 lifetime). These we wrote and tested ourselves, with controlled testing, blind reviewers, before/after data, and YAML metadata tuned for Claude Code's skill matcher. The $19 unlocks all 845, plus a one-click ZIP of all 2,390 (paid + free) together, plus every new skill we ship going forward, forever, no subscription.
How skills actually work: you extract the ZIP into ~/.claude/skills/ on your laptop. Restart Claude Code. From then on, when you start a task that matches a skill's description in its YAML frontmatter, Claude Code reads that file into context automatically. No slash commands to type, no codes to remember. The skill activates because the model recognizes the situation, not because you remembered to invoke it.
Examples of what skills cover: stripe webhook patterns, django ORM gotchas, docker compose anti-patterns, kubernetes rolling deploys, postgres performance tuning, react server component edge cases, claude code's own context-compression rules, sales objection handling, technical-writing voice, and 836 more.
What the Skills Library does NOT contain: prompt codes (those are in the Cheat Sheet), a UI, a chatbot, or anything you run. It is a folder of markdown files Claude Code reads on demand.
Who I have seen get value from which
The Cheat Sheet buyer is usually: someone shipping Claude prompts daily, often a solo dev or a small team's tech lead, sometimes a marketer or researcher heavy on Claude. They want to write fewer bad prompts. They have hit the moment of "I just typed the same boilerplate for the fifth time this week" and want a paste-ready reference. They often buy Full first and upgrade to Pro within a month for the email channel.
The Skills Library buyer is usually: someone building production work with Claude Code (not just Claude.ai), often someone with their own ~/.claude/CLAUDE.md already, often a senior engineer who finds writing skill files tedious but recognizes their value. They want Claude to know their domain stack without re-explaining it every session. They are the kind of person who reads the skills docs on docs.claude.com and goes "yes this is what I want, but I do not want to author 800 of these myself."
There is a third group I want to name: people who do not need either of these yet. If you have used Claude for fewer than ~30 hours total, get the free 40-page guide. Run through it. Build your own CLAUDE.md. Try /prompts (the free 100-code library). When you hit the specific friction these products solve, you will know. Buying them too early is a waste of $15-20 because the products assume you already know what hurts.
The four-question decision tree
If you are stuck on which to buy, answer these in order.
1. "Do you mostly use Claude.ai (web/desktop chat), or Claude Code (the CLI in your terminal)?"
- Mostly Claude.ai → Cheat Sheet only. Skills files do not load into the web chat (yet); they are a Claude Code feature.
- Mostly Claude Code → continue to question 2.
- Both → continue to question 2.
2. "When Claude gives you bad output, is the bad output usually wrong (hallucinations, gaps in domain knowledge), or vague (hedging, lists factors instead of committing)?"
- Mostly wrong / gaps in domain → Skills Library. The fix is giving Claude better domain context, which is what skill files do.
- Mostly vague / hedging → Cheat Sheet. The fix is forcing a different reasoning mode, which is what prompt codes do.
3. "Do you want to email me directly with questions for a month?"
- Yes → Cheat Sheet Pro ($24.99). The 30-day direct email line is the differentiator.
- No → Cheat Sheet Full ($14.99) or Skills Library ($19), whichever question 2 pointed at.
4. "Do you also work across many domains where you would benefit from a deep skills library forever?"
- Yes, my work spans stacks → Skills Library is a long-term win. $19 once, every future skill free, you stop paying ChatGPT $20/month essentially in trade.
- No, I mostly work in one stack → Skills Library is still worth it if you live in Claude Code, but the marginal value is lower. Try the free 1,545 first.
What if I buy both
Some people do. The combined cost is $34.98 (Full + Skills) or $44.98 (Pro + Skills), still less than one month of most SaaS subscriptions. There is no bundle discount on the site right now, mostly because I do not want to manufacture a fake discount. If you buy both, email me at team@clskills.in within 7 days of the second purchase and I will refund $5 manually. That is real, not a marketing line, and it caps out at 100 refunds per month so I do not lose money on it.
The two products do compound. The Cheat Sheet teaches you how to write prompts that force a reasoning mode. The Skills Library means the model already knows your domain when those prompts run. Together you spend less time correcting Claude per task. But you should be hitting both kinds of friction ("vague output" AND "wrong-domain output") for the math to make sense.
What about the free options
The free options carry real weight and I want to be explicit about this because I think you should try them before buying anything.
Free 40-page Claude guide at clskillshub.com/guide — full setup, the CRISPE framework, MCP servers, building agents with markdown files, 20 must-know prompt codes with examples, 8 industry playbooks. PDF delivered to your inbox, no card needed. Used by 450+ developers as of writing.
Free 100-code prompts library at clskillshub.com/prompts — 100 of the most-used prompt codes browsable in a web UI with copy-to-clipboard. No email signup. The Cheat Sheet's value-add over this is the before/after proof, the failure-mode warnings, and the deep classification, but the free library is enough for many people.
Free 1,545 community skills at clskillshub.com/free — full ZIP of MIT/Apache-licensed community-contributed skills with attribution preserved. Drop into ~/.claude/skills/, restart Claude Code, done. The paid 845 are the ones we tested ourselves, but the free 1,545 cover a lot of ground.
Free Combo Generator + Insights Dashboard + Anti-Pattern Library — limited free tiers (6 combos, 10 classified codes, 5 placebos) at /combo, /insights, /anti-patterns. Each has paid expansions inside the Cheat Sheet.
If you spend an evening with just the free guide and the free prompts library, you will outperform 90% of people typing prompts blind. That is not a humble-brag, it is the actual data from the controlled tests I ran last quarter.
Why the prices recently dropped
Full transparency: the Cheat Sheet Full was $20 and Pro was $35 a week ago. I cut them to $14.99 and $24.99 on May 8 because the bump I shipped on May 1 did not move conversion the way I expected, and a simpler price ladder (Lite $10, Full $14.99, Pro $24.99) matches the way buyers actually think about "is this worth a casual yes." The Skills Library moved from $20 to $19 in the same change, mostly so all three SKUs end in .99 for consistency.
If you bought at the higher price in the last 7 days, email me at team@clskills.in. I will manually credit the difference back via the same payment provider you used. Not as a marketing line, as a thing I actually do, because I do not want anyone feeling like the timing burned them.
Lifetime updates included on every tier. One-time payment. 30-day refund if you find the product is not what was advertised.
TL;DR
- Cheat Sheet ($14.99 Full, $24.99 Pro) = prompt-code reference. Buy if your bottleneck is how you write prompts.
- Skills Library ($19 lifetime) = skill files Claude Code auto-activates. Buy if your bottleneck is Claude not knowing your domain.
- Both = if you are hitting both kinds of friction. Email me for a $5 refund within 7 days.
- Neither = if you have used Claude less than ~30 hours. Start with the free guide.
Links: Cheat Sheet · Skills Library · Free 40-page guide · Free 100 prompt codes · Free 1,545 community skills
Questions? Reply to any CLSkills email or write to team@clskills.in. I read everything.