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Documentation

Kelviq is a merchant of record with billing built in. You set your prices and plans, Kelviq sells them, collects the tax, and pays you out. Your app asks Kelviq what each customer can use.

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Will Kelviq work for my product?Do I need a Stripe account?What does Kelviq cost?Can I charge per token or API call?What’s the fastest way to integrate Kelviq?

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How Kelviq works

Products, plans, features and customers, and what Kelviq handles for you.

Set up your dashboard

Create a product, a plan, and your first feature.

Integrate with your app

Send customers to checkout, check access, and report usage.

Build with AI

Let Claude Code, Cursor or Codex set up Kelviq, or connect agents to the MCP server.

Sell

Pricing models

Subscriptions, one-time, per seat, usage-based, pay as you go, trials.

Checkout

One-page hosted checkout with local payment methods, in light and dark.

Customer portal

Customers manage plans, payment methods and invoices themselves.

Payouts

When and how you get paid, and what the fees are.

Reference

API reference

Every endpoint, with examples.

SDKs

Node, Python, React and JavaScript.

Changelog

What shipped, every Friday.