Now in early access

Usage-based payments
for AI apps

One wallet for users. One API gateway for developers.

Consumer AI won't be one-size-fits-all. Billing shouldn't be either.

The first unified usage-based wallet for AI apps. Add Wind to monetize users beyond subscriptions and take control of your margins.

Integrate Wind

Create your wallet 500 free credits — no card required

For developers

Usage-based billing infrastructure
Wallets, payouts, and pricing handled
Per-feature monetization controls
Flexible pricing models
Transparent usage accounting
Integrate in an afternoon

For users

Connect your wallet once
No repeated checkout friction
Pay instantly across AI apps
Pay only for what you use
One balance everywhere
Full transaction transparency

Built for AI developers

Everything you need to
monetize AI features

Wind handles wallets, billing, and per-request pricing so you can focus on building — not payment infrastructure.

Increase conversion

Users connect their Wind wallet once and spend across any app. No re-entering payment details, ever.

Capture more revenue

Usage-based pricing means users pay for what they use — not a fixed subscription they might cancel.

Reduce complexity

No Stripe integration, no webhook hell, no subscription tiers. Wind is one API call that does it all.

Integrate in minutes

One API key. SDK for JS and iOS. Real working example included. Ship monetization today.

How Wind works

Simple for users.
Powerful for developers.

Wind sits between your AI app and the user's wallet — handling the entire billing lifecycle automatically.

User adds funds

Every new account gets 500 free credits instantly — no credit card required. Top up anytime to keep going.

Connects to an app

One-click authorization via Wind Connect. No passwords or payment details shared with developers.

Uses AI features

Every AI call routes through Wind. Credits are deducted per request based on your pricing rules.

Developer gets paid

Wind handles the billing. You focus on the product. Transparent receipts for every request.

Wind wallet showing credit balance and top-up options

Third-party app showing Wind active with credits remaining

Wind Apps tab showing connected apps and transaction history

Developer experience

One API call.
Full monetization.

Call /v1/ai/:featureId with the user's Wind ID — Wind handles the wallet check, charge, and receipt automatically.

          
          api/generate.js
        
// Vercel function — API key stays server-side
module.exports = async function handler(req, res) {
  const upstream = await fetch(
    'https://wind-production-3225.up.railway.app/v1/ai/story-gen',  // featureId in URL
    {
      method: 'POST',
      headers: {
        Authorization: `Bearer ${process.env.WIND_API_KEY}`,
      },
      body: JSON.stringify({
        windUserId: req.body.windUserId,
        messages: req.body.messages,
        // model is set in your Wind dashboard
      }),
    }
  )
  // Wind handles: balance check → AI call → charge → receipt
  const data = await upstream.json()
  res.status(upstream.status).json(data)
}

One API key

Authenticate all requests with a single secret key. No per-user tokens to manage.

Automatic billing

Wind checks the user's balance, deducts credits, and returns a receipt — all in one response.

Flexible pricing rules

Set per-feature pricing in the dashboard. Charge different amounts for different capabilities.

Proxy pattern built in

API key lives server-side. The SDK handles the user-facing flow — no secrets in the browser.

Quick start guide API reference

Reliable by design

Infrastructure you can
build a business on

Wind handles the hard parts of AI billing — so you ship faster and sleep better.

Usage receipts on every charge

Every API call returns a receipt. Users and developers see exactly what was billed, per request.

Built-in rate limiting

Per-feature spend controls prevent runaway costs before they happen. No surprises.

Transparent transaction logs

Full payout and transaction history for developers and users — always accessible, always auditable.

Prepaid balances

No failed payments. Users spend what they've already loaded — nothing more, no chargebacks.

Developer verification APIs

Query any user's balance or connection status before making a billable request.

A growing network of AI apps

One wallet for every
AI experience

Wind works across categories. Users bring their balance to any app in the network — no new accounts, no new payment methods.

Writing Coding Image generation Story generators Chat assistants Research tools Voice AI Data analysis And more

Usage-based paymentsfor AI apps

Everything you need tomonetize AI features