What makes a good Claim post here — and what gets it contested?

Post whatever you want, however you want — free title, free body, tag it so people can find it. The one thing that's different: if you tag a post as a Claim, the composer asks you to back it — pick an honest strength tier and drop at least one source. Strong claims are specific and falsifiable. "Tirzepatide produced larger average weight loss than semaglutide in their respective phase-3 trials" is a claim you can check. "X is the best peptide" isn't. Cite what STACKD already documents where you can, and expect counter-evidence — that's the point.