Creation material
The strong line is already in your draft
Four formats with their length rules, the moves that kill a hook before anyone reads it, and the method that matters most: find the line you already wrote and promote it. Paste a hook below and the checker will tell you what is working against it.
11 pages · 4 formats · 10 rewrites · free
Check a hook · no email required
Paste one in and see what it is doing
This runs entirely in your browser and nothing you type is sent anywhere. It checks rules, not quality: the format you have chosen, its length against that format’s own limit, and the phrases that reliably work against a hook.
The four formats
Each one has its own length rule, and the rule is the point
A hook fails more often by being the wrong shape than by being badly written. Pick the format first, then write to its limit.
Up to 50 characters
Single-line bomb
One claim, no context, nothing to hide behind. The hardest to write and the strongest when it lands.
Two lines, 50 each
Punchy plus context
A short claim, then the line that makes it land. The most forgiving of the four.
Three lines, 60 each
Stacked list
Parallel structure doing the work. Numbers and dates read especially well in this shape.
130 to 170 characters, one line
Dense
A full paragraph that wraps naturally. Carries the most information and needs the strongest first six words.
The method that matters most
Stop writing hooks. Start mining them.
The strongest line in a post is almost never the one at the top. It is about a third of the way down, written after you warmed up and stopped performing. Finding that line and promoting it beats writing a new hook from nothing, every time, and it costs about five minutes.
The guide walks the method with ten worked rewrites, each one a real draft with its buried line found and moved. That is the part worth having: watching where the line was hiding in somebody else’s paragraph is how you learn to spot it in your own.
Get the guide
Eleven pages, four formats, ten worked rewrites
- The four formats with their length rules and when each one is the right shape
- The moves that kill a hook before anyone reads it, with the reason each one fails
- The mining method, worked ten times on real drafts
- The phrase lists in full, including the retired ones worth deleting on sight
Get the playbook
Where should we send it?
Four formats with their length rules, the moves that kill a hook before anyone reads it, and the method that matters most: the strong line is already in your draft.
One email with the download, and whatever you choose to receive after that. No sequence starts without you opting into it.
Agent Craft
The checker above runs on every draft, before you see it
These rules are not a document Agent Craft consults. They are applied to every hook it writes, and the mining method is how it finds your opening line: from what you actually said, not from a template.
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Before you ask
Reasonable questions
Is a hook really worth this much attention?
It is the only part most people read. Everything below it is read by a fraction of the people who saw the first line, so the first line decides the value of everything under it. That is not a claim about psychology, it is arithmetic.
Does the checker tell me if my hook is good?
No, and it does not pretend to. It checks rules: length against the format you chose, and phrases that reliably work against you. A hook can pass every check and still be dull. What it catches is the mechanical damage, which is most of the damage.
Why is there a length limit at all?
Because the platform truncates. Past a certain point your hook is competing with a "see more" link rather than with other posts, and the limits here are the practical fold rather than a style preference.
What is the mining method?
The strong line is almost always already in your draft, about a third of the way down, written after you warmed up. Finding it and promoting it beats writing a new hook from nothing, and it is the single highest-return move in the guide.