Claude Code + /prove-it-better = AI That PROVES It's Better (FREE Skill)
A new model comes out every few weeks and every one claims to be better. AI sounds just as confident when it's wrong. So how do you actually know a change made your code, your prompts or your app better? I built a free Claude Code skill for exactly that: /prove-it-better. It makes every change prove itself before it ships. How it works: 1. Checks it has access to everything it needs 2. Researches the problem and the real data before touching anything 3. Writes the ship rule first, then builds the new version behind a switch 4. Runs old vs new on the same real inputs, with a blind judge: outputs labelled A and B, judged twice with the order swapped, and both verdicts must agree 5. Hard checks too: do the links load, are the quotes real, is there real search demand 6. Lost? It reads the judge's reasons, fixes, and tests again 7. Ships only the winners, so you can undo in a second, then verifies it live 8. Reports only what it measured I ran it on a /goal overnight and it worked for about 9 hours rebuilding Harbor, my AI SEO content tool. Keywords, clusters, Scout, Spy, landing pages, article statistics: all of it came out better. Then I pointed it at my Convex bill. It found 5 seats I didn't need and saved me $75 a month. Install: git clone https://github.com/IncomeStreamSurfer/prove-it-better Then run /prove-it-better in Claude Code. Harbor (founder pricing is back): €29/month, and 50% off your first month → https://harborseo.ai Work with us: https://incomestreamsurfer.com #ClaudeCode #ClaudeSkills #Opus55 #AICoding #HarborSEO ## Chapters (approximate, check against the edit) 0:00 Every model claims to be better. How do you know? 0:33 The fix: make every change prove it's better 0:46 Ground your agents in real data (Harbor) 1:42 The blind judge: A vs B, judged twice 2:09 I ran it on /goal for 9 hours overnight 3:00 The results: better keywords and landing pages 3:59 Harbor founder pricing is back 4:46 How /prove-it-better works, step by step 5:40 Verify it live, and how to install it 6:13 It saved me $75 a month on Convex 6:53 Why you can run it without breaking anything 7:29 Outro ## Tags claude code, claude code skills, prove it better, /prove-it-better, claude code skill free, claude code tutorial, claude code opus 5.5, opus 5.5, ai blind test, llm as a judge, ai evals, prompt testing, claude code goal, ai seo, harbor seo, harborseo, convex, ai agents, claude code tips, income stream surfers
