120 tested Claude prompt codes. $15 flat.
Most so-called secret Claude prompts are tone changes being sold as reasoning unlocks. I ran blind A/B trials across 40 of the most-shared codes over three months. 7 measurably change what Claude decides. 33 only change how it sounds. The full cheat sheet documents all 120 with before/after data so you stop wasting tokens on placebos.
Two entries from the library. Same shape as all 120.
Each code ships with the exact prompt, real before/after from Sonnet 4.6 and Opus 4.7, token deltas, and failure modes. Picture yourself with this open on a second monitor.
It might be worth considering, perhaps, some of the potential trade-offs here, though of course there are many angles from which this could be viewed.
Trade-off: faster ship, weaker tests. Ship the MVP. Harden tests in week 2. Track regression rate weekly.
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Modern APIs fail the same way old ones did: bad error shapes, unstable IDs, leaky auth. Fix those three and the rest is taste.
Try the Stacker on your own prompt.
3 free rewrites a day, no signup. The engine picks 3 tested codes for the shape of what you paste and hands back a compiled prompt.
One plan. Everything included.
One-time payment, lifetime updates. No subscriptions, ever.
120 tested prompt codes that make Claude's answers noticeably better.
- All 120 tested prompt codes, organized by task
- Before/after examples and token deltas on every code
- The full test data: verified placebo verdicts and raw transcripts
- Combo stacking data plus 20 paste-ready combo templates
- 20 bonus power prompts and the anti-pattern library
- 30 days of email access to the builder
- PDF, Markdown, and live web reference, lifetime updates
What buyers say unfiltered.
Bought it mostly out of curiosity. The placebo verdicts section alone was worth it. I was using three prompts that apparently do nothing.
Used two of the combo-stacking prompts on a client deliverable this week and it saved real time. This is the first prompt resource I have paid for that felt tested rather than guessed.
The anti-pattern library changed how I write prompts more than the codes themselves did. Small purchase, disproportionate value.
Solid for the price. Wish there was a searchable index instead of scrolling the PDF, but the before/after examples are genuinely useful.
Good honest tone throughout, appreciated that it tells you what does not work instead of just selling hype. Delivery was instant which I did not expect for $15.
Decent reference but I expected more depth on the failure-mode warnings. Half of them are one line. Still cheaper than the hours I would have spent testing myself.
It is fine. Not life-changing, but I do not regret the $15. Would not recommend at a higher price point though, the depth does not quite match a $49 pack.
Some codes felt like stuff I could have found free on Reddit. The token-delta data is the actual differentiator, more of that and less repackaged basics would have made this better.
Felt like I should have gotten a bigger sample before judging the rest of it. Could be clearer upfront about what you get.
Cheat sheet questions, straight answers.
Still comparing? Grab the free guide first.
75 pages. No email gate after download. No upsell. Same voice as the cheat sheet.