Learn
Practise the part of the work AI can't do for you
Each skill is taught by the essays here and tested on real cases. You answer first, say how sure you are, then see what happened and the source. Your record stays in your browser.
01 · Paths
Pick a goal; your progress shows on every step
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Ship a coding agent you can trust
You build with coding agents.
7 skills to practise
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Decide which AI claims to believe
You read benchmark results, vendor numbers and AI-written reports.
4 skills to practise
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Keep the valuable part of your job
You use AI at work and want to know which part of the work is still yours.
5 skills to practise
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Learn with AI without getting worse
You use AI to learn something new.
5 skills to practise
02 · Tracks
Each track is a map of skills; take a first look to see where you stand
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Track 1
Check an agent's work
Tell when an agent is done, when a result is real, and when a guard will hold.
9 skills · 36 cases
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Track 2
Build agents that hold up
Put effort where it moves the agent, give it the context and memory that change what it does, and ship changes you can roll back.
7 skills · 28 cases
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Track 3
Use AI at work without losing the skill
Keep the practice that builds your judgement, learn with AI without getting worse, and know which parts of the work still need you.
7 skills · 28 cases
03 · How this works
Kept in your browser
You answer first
Click the line where it went wrong, type the command, or pick the answer. Then say how sure you are, from the chance of a guess up to 99%. Only then do you see what happened and the source.
Four states
Passed means three different cases right, one of them a new case. Held means right again a few days later. Proved means you did it on your own work. Started is everything before that.
Your record stays with you
Nothing you answer is sent to us. Safari clears a site's stored data after a week away, so the record also saves as a link you can keep and as a file. It is a record for you, never a certificate.