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Simulator
Folder Sniff
Free
Upload an existing AI folder — get the 3 most critical issues, ranked, with fix suggestions.
Free · 12 runs/hour · no email needed
The problem this solves
Six months ago you copy-pasted a rules folder to get the agent working. It 'kind of works' now — but it contradicts itself, nobody remembers what's in it, and your gut says don't ship it to prod. Two files quietly tell the agent opposite things. A safety rail is missing that won't show in a happy-path test but will the moment a user types something weird. You can feel the rot; you just can't find the line it lives on.
After completing this
You become someone who can audit a folder you didn't write in under five minutes. Upload it, get the three most critical issues ranked, each with the exact lines quoted and a fix suggested. You learn to tell cosmetic mess from load-bearing rot, and to point at the line that will break first under real traffic — then hand a clean folder to a new teammate without a walkthrough.
How it works
It's a simulator, not an article
You don't read about folder hygiene — you upload a real folder and watch it get sniffed, with the failing lines quoted back at you.
You answer first, theory after
You bring your own (or a sample) folder and react to the ranked issues first; the why-it-matters lands after you've seen the break.
From the demo, a direct bridge to the paid track
Once you can audit a folder, the paid 'I'm Agent Creator' track teaches you to build folders that pass the sniff by design.
Who this is for
Teams running a Cursor/rules folder nobody remembers writing
Get a five-minute health check that surfaces the duplicate roles and dead refs you've been stepping around for months.
Founders whose agent 'kind of works' but nobody knows why
See the contradictions quoted and line-numbered, so 'it's flaky' becomes 'these two files disagree on line 40.'
Engineers auditing a folder before onboarding a new model
Catch missing safety rails before the model swap exposes them — the failures that only show up on weird input.
Not for you if
- People with no folder yet — this audits an existing one, it doesn't teach you to build from scratch (that's the Agent Creator course).
- Anyone wanting a full line-by-line code review; this surfaces the three issues that matter, not every nit.
- Teams who already run a linter and conflict-detector in CI on every folder change.
When you'll reach for this
01
Your agent contradicts itself and you can't find where
Folder Sniff pulls the duplicate role definitions and shows you the two files telling it opposite things — quoted, line-numbered, fixable.
02
You hired someone and want a 5-minute health check on their work
Three ranked issues, with quotes. No subjective code review — just what's broken and why it would bite in production.
03
You're about to ship the folder to prod and your gut says wait
Missing safety rails get flagged first — the things that wouldn't show up in a happy-path test but will the moment a user types something weird.
Powers you walk away with
- Audit a folder you didn't write in under five minutes
- Tell the difference between cosmetic mess and load-bearing rot
- Point at the exact line that will break first under real traffic
- Hand a clean folder to a new teammate without a walkthrough
What's inside
- 01Detects dead refs, duplicate roles, missing safety rails
- 02Quotes the exact lines that fail
- 03One-click handoff to the FolderAI editor
Tested on 14 production agent folders before this opened.
What stays in your portfolio
- The ability to audit an agent folder you didn't write in under five minutes.
- A trained eye for cosmetic mess vs. load-bearing rot.
- The skill of pointing at the exact line that breaks first under real traffic.
- A clean folder you can hand to a new teammate without a walkthrough.
Pairs well with
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Build agent folders end-to-end: pipeline, sub-agents, memory layers, conflict detection.
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FAQ
Is it free?
Yes, fully. Sniff as many folders as you want — no card, no signup.
Do I need a card?
No. Upload a folder, get the ranked issues. There's no payment step.
How long does it take?
A folder sniffs in under five minutes, most of it spent reading the quoted fixes. No prep needed.
What's next after the demo?
Once you can audit a folder, the paid 'I'm Agent Creator' track teaches you to build folders that pass the sniff by design — pipelines, sub-agents, conflict detection.
Will it change my folder?
No. It reads your folder and reports — quotes, ranks, suggests. There's a one-click handoff to the FolderAI editor only if you choose to act on a fix.
Made by mihalkevich.com — runs on the FolderAIThe engine that powers the courses and simulators engine.