There are three ways to give Claude instructions. A paste is dropping your instructions into one chat, best for a one-off. A Project is a folder of chats that share the same instructions and files, best for an ongoing kind of work. A skill is a downloaded file you upload once and call with a slash, best for a repeated job you want done the same way every time. The plain rule: start with a paste, promote to a Project when you keep redoing the same background, and build a skill when the method itself is worth saving.
Use a paste for a one-off, a Project when the same background keeps coming up, and a skill when the same method is worth saving, and when in doubt start with a paste and promote later.
How to choose in five steps
- One-off? Use a paste. If you need this done once and may never do it again, just drop your instructions into a single chat. There is nothing to set up and nothing to maintain, so it is the fastest way to get a good answer today.
- Same background again and again? Use a Project. When you keep starting chats with the same "who I am, what the work is" preamble, that preamble belongs in a Project, so every chat inside it already knows the context and you stop retyping it.
- Same method again and again? Build a skill. When it is not just the background but the steps that repeat, the way you want a certain job done every time, save those steps as a skill and call it with a slash, so the method comes out the same on every run.
- Combine them when it helps. These are not rivals. You can call a skill inside a Project, so the Project holds your context and the skill holds the method, and together they cover both the who and the how of a repeated job.
- When in doubt, start cheap. If you cannot tell which you need, start with a paste, because it costs nothing to set up. If you find yourself pasting the same thing over and over, that is your signal to promote it to a Project or a skill.
The which-one-do-I-need checklist
Save this and read it the next time you are unsure. It is a plain reference for the three options and when to reach for each. The lines under each heading are the whole point, so keep them as they are.
WHICH ONE DO I NEED? A quick reference. PASTE Reach for this when: you need something done once, or rarely. It is instructions dropped into a single chat. Nothing to set up, nothing to keep. Signal you have outgrown it: you keep pasting the same background again and again. PROJECT Reach for this when: the same background keeps coming up across many chats. It is a folder of chats that share the same instructions and files, so the context loads once. Signal you have outgrown it: it is not the background but the exact steps that repeat every time. SKILL Reach for this when: the same method is worth saving and running the same way every time. It is a downloaded file you upload once and call with a slash. (This is a Claude SKILL.md file.) You can call a skill inside a Project, so context and method work together. STILL UNSURE? Start with a paste. It costs nothing to set up. Promote it to a Project or a skill only once you feel yourself repeating.
Where the line is
- None of these makes a bad instruction good. A paste, a Project and a skill only carry the wording you give them. If the instruction is vague, saving it in a fancier place just repeats the vagueness, so the words still have to be right.
- You do not need a skill for everything. Most people live happily in pastes and one or two Projects. A skill is worth building only when a method truly repeats. Do not turn a one-off into a project of its own.
Pick one thing you keep redoing
Think of the last thing you set up from scratch in Claude more than twice this week. Decide, right now, whether it wants a paste, a Project, or a skill, and set up that one. Start with the cheapest option that fits and promote it later if you outgrow it.
Ready to promote your first one? Read how to set up a Claude Project.