diff Pro — $2/mo
Save and share your diffs at a private URL. Free diffs keep working in your browser; Pro is the only thing that stores text on our side.
$2/ month
- Save any diff at a private URL — only people with the link can view
- Up to 1 MB combined per saved diff
- Unlimited AI summaries (free tier is rate-limited)
- Diff history at /manage — copy URL, delete anytime
- Share a diff with a teammate, drop the URL in a PR comment
- Cancel any time from the customer portal
Stripe Checkout collects your email; sign-in afterwards happens at account.basenull.com.
Why we charge for save & share: we don't want to host arbitrary text for free. Persisting saved diffs costs us infrastructure and creates an abuse vector. Pro keeps the tool honest and the text storage tied to a real account.
Sign in is centralized. The same basenull account works on every basenull product — mcp-inspect, mcp-watch, agent-check, code-shot, prompts, and others. One inbox check, one cookie, every product.