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Signup API

POST signups directly from your backend, app, or CLI. JSON in, JSON out.

https://waitlist.findutils.com

Method	Path	Description
GET	/api/public/:slug/config	Public waitlist config (title, theme, fields, Turnstile key)
POST	/api/public/:slug/signup	Create a signup. Returns position + referral code.

Returns the waitlist's public configuration. Cached at the edge for 60 seconds. Use this to render your own custom form.

{
  "title": "Acme AI",
  "description": "Be the first to know.",
  "theme": {
    "primary": "#4f46e5",
    "bg": "#ffffff",
    "text": "#0f172a",
    "font": "system",
    "radius": "soft",
    "logo_url": "",
    "hero_image": ""
  },
  "fields": {
    "name": true,
    "company": false,
    "twitter": false
  },
  "branding": true,
  "turnstile_site_key": "0x4AAAAAAA..."
}

Creates a signup on a waitlist. Returns the new position and a referral code.

Request body

{
  "email":     "alice@example.com",
  "name":      "Alice",
  "company":   "Acme Inc",
  "twitter":   "alice",
  "ref":       "AB3CD4EF",
  "turnstile": "TURNSTILE_TOKEN"
}

Only email and turnstile are required. Other fields are optional and only stored if the waitlist has them enabled.

Success response (200)

{
  "ok": true,
  "position": 47,
  "ref_code": "XY9ZW8V7",
  "share_path": "/w/your-slug?ref=XY9ZW8V7"
}

Duplicate email (200)

Not an error — returns the existing position and ref code so your UI can show "you're already in".

{
  "ok": true,
  "duplicate": true,
  "position": 47,
  "ref_code": "XY9ZW8V7"
}

Error responses

Status	Meaning
400	Invalid email, bad JSON, payload too large, or honeypot triggered.
403	Turnstile failed, or waitlist is full.
404	Slug doesn't exist.
429	Rate limited (120 requests per IP per minute).
500	Transient server error — safe to retry once.

curl

curl -X POST https://waitlist.findutils.com/api/public/your-slug/signup \
  -H "Content-Type: application/json" \
  -d '{
    "email": "alice@example.com",
    "name": "Alice",
    "turnstile": "TURNSTILE_TOKEN"
  }'

JavaScript

const res = await fetch(
  'https://waitlist.findutils.com/api/public/your-slug/signup',
  {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({
      email: 'alice@example.com',
      name: 'Alice',
      turnstile: turnstileToken,
    }),
  }
);
const data = await res.json();
if (data.ok) {
  console.log('Position:', data.position);
  console.log('Share URL:', 'https://waitlist.findutils.com' + data.share_path);
}

Python

import httpx

res = httpx.post(
    'https://waitlist.findutils.com/api/public/your-slug/signup',
    json={
        'email': 'alice@example.com',
        'name': 'Alice',
        'turnstile': turnstile_token,
    },
)
data = res.json()
print('Position:', data['position'])

Node.js

const res = await fetch(
  'https://waitlist.findutils.com/api/public/your-slug/signup',
  {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ email: 'alice@example.com', turnstile: token }),
  }
);
console.log(await res.json());

Every signup request must include a valid Cloudflare Turnstile token. Three ways to get one:

• Embed widget — the widget handles Turnstile automatically. Use this if you're rendering Waitkit's own form.
• Your own form — render Turnstile client-side with the turnstile_site_key from the config endpoint and pass the resulting token in the signup POST. See the Turnstile docs.
• Server-to-server — not supported on the public endpoint. The Turnstile check fails closed.

All endpoints share a per-IP rate limit of 120 requests per minute, enforced at the edge before any DB hit. Exceeding returns 429 with a Retry-After: 60 header.

The public endpoints (/api/public/*) are CORS-enabled with Access-Control-Allow-Origin: * — you can POST from any origin, including localhost during development.

Listing your waitlists, updating them, viewing signups, exporting CSVs, and upgrading to Pro live under /api/waitlists/*. They require a valid waitkit_session cookie set by the magic-link login flow and are consumed by the dashboard UI. If you need programmatic access, reach out.