
The pre-launch platform that gets your beta out—and tells you when it’s ready to go all the way.
Get on the key waitlistExplore the APIMaster Beta is the short-lived control room between “we’re building it” and “we’re shipping it.” Alpha signups, waitlists, feedback, invite waves, and one very honest answer to: are we ready?
Turnstile protectedCORS-first APITiny hosted databaseCSV handoffYour beta is close. Here’s what needs your attention before launch.
Next move: Invite 20 more qualified testers after the writing-flow bug is fixed. We’ll check back next week.
Unless you want it to be. Put a protected alpha form on your site in a few lines, then let Master Beta keep the receipts.
Open the REST playgroundPOST https://masterbeta.dev/v1/submit
{
"siteKey": "mb_pub_...",
"form": "alpha",
"email": "ada@example.com",
"turnstileToken": "..."
}
201 { "status": "waitlisted" }Export the evidence, hand the right people to production, and retire the beta. A good pre-launch platform knows when to leave.
Request a keyMeet the APIYou’ve spent your life trying to get in. Master Beta is for getting out… of beta. Obviously.
Tell us what you are preparing to launch. We will invite a small number of teams as capacity opens, with preference for people willing to shape the product with us.
One email field begins the signup. Master Beta fetches any configured questions, then opens a short follow-up popup after the email is accepted.
<form class="master-beta-form" data-site-key="mb_pub_…" data-turnstile-key="0x4AAAA…" data-source-site="yourdomain.com">
<label>Email <input name="email" type="email" required></label>
<label class="mb-honeypot">Leave blank <input name="website" tabindex="-1" autocomplete="off"></label>
<div data-turnstile></div>
<button type="submit">Sign up for beta</button>
<p data-status role="status" aria-live="polite"></p>
</form>
<script src="https://masterbeta.dev/v1/widget.js" defer></script>