Paid download checkout checklist
A paid download is only safe when checkout, success redirects, session verification, and support wording all fail closed.
Preflight checks
These are intentionally practical checks: the things a founder can verify before publishing.
Hosted card handling
Success URL session check
Denied fake-session downloads
Before
Payment complete. Click here to download.
After
Payment complete. The download route checks the Checkout Session server-side and rejects missing, fake, or unpaid sessions.
Get the full launch kit
The paid download includes AI copy cleanup, privacy preflight prompts, checkout checks, and support wording in one markdown file.
Buy the kit for $9