RadialBrain · Velocity Forms · Labs

One endpoint. Any form. No form backend.

Point a standard HTML form at Velocity Forms and every submission is stored durably before the visitor sees a thank-you. No per-form code, no schema, no third-party form service.

<form method="post" action="https://rb-velocity-forms.rblabs.workers.dev/s/site_demo_public">
  <input type="hidden" name="_key"  value="vfk_…">          <!-- submit-only key -->
  <input type="hidden" name="_next" value="https://…/thanks.html">  <!-- allowlisted redirect -->
  <input name="anything_you_like">                        <!-- no schema -->
  <button>Send</button>
</form>

Try the forms

Contact — plain HTMLNo JavaScript at all. Native POST, then a 303 redirect to the thank-you page. Quote request — rich controlsRadios, checkboxes, multi-select, date, number and hidden fields. Repeated names become arrays. Newsletter — inline JSONOne email field posted with fetch. The page stays put and shows the submission id. Invent your own formMake up field names on the spot. They are stored without any Worker change. Safe retriesSend twice with the same Idempotency-Key and get one stored submission. Guardrails, liveWrong key, open-redirect attempt, honeypot, oversize field and rate limiting — run them yourself.

What happens on submit

The write key is checked. It can only add submissions to this one site — it cannot read anything.
Origin, rate limit, honeypot and size limits run before anything is stored.
The submission is written to Cloudflare D1, then a pointer is queued for downstream work (notifications, AI triage, CRM).
Only then does the visitor get the thank-you page or a JSON 201.

Labs demo. Submissions land in a RadialBrain test database — please don’t enter real personal data.