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Kelviq has four building blocks: products, plans, features, and customers. This page uses one example throughout: Acme AI, a writing assistant with a Free and a Pro plan.

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Products

A product is the thing you sell. In the example, the product is Acme AI. Learn more about products →

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Plans

A plan packages a product’s price and features. Acme AI has two: Learn more about plans →

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Features & limits

A feature is something a plan grants. You create a feature once and add it to as many plans as you like, each with its own value. In the API and SDKs, the value a plan gives a feature is called an entitlement. There are three feature types: Your app checks the feature, not the plan. Moving priority-support to the Free plan is a dashboard change, not a deploy. Learn more about features & limits → · How usage limits work →

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Digital downloads

A digital download is a file that your customers can download after purchasing. Examples: e-books, software, music, videos. Learn more about digital downloads →

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License keys

A license key is a code that your customers can use to activate a digital download. Examples: software activation, game keys, e-books. Learn more about license keys →
Links allow you to share important URLs with customers after they purchase your plan. Examples: Discord servers, Slack workspaces, Notion pages, member-only dashboards. Learn more about links →

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Customers

A customer is a person or company that buys from you. Create a customer with your own ID, such as cust_123, when someone signs up in your app. When they buy Pro, Kelviq links the subscription to that customer and their ai-credits balance starts at 10,000. Each time they use a credit, your backend reports it. After 6,500 credits, Kelviq shows 3,500 remaining until the monthly reset. Learn more about customers →

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Typical workflows

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AI and usage-based products

Billing for actual work delivered rather than just seat access.
  1. Create features like AI tokens, API calls, or workflow runs
  2. Create a product
  3. Create plans with a base fee plus usage charges
  4. Set usage limits on each plan, with a soft or hard limit
  5. Integrate the SDK to report usage back to Kelviq as the AI performs work
  6. Customer subscribes and pays automatically based on their actual consumption

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One-time products

Selling digital downloads, license keys, or access links:
  1. Create a product
  2. Create a plan with one-time pricing
  3. Add digital downloads, license keys, or links to the plan
  4. Share your checkout link or embed a pricing table
  5. Customer purchases → receives their files, keys, and links

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SaaS subscriptions

Selling recurring access with feature limits:
  1. Create features (e.g., API calls, storage, AI tokens)
  2. Create a product
  3. Create plans with recurring pricing (monthly/yearly)
  4. Add features & limits to each plan (e.g., 1,000 API calls/month)
  5. Integrate the SDK to check feature access and enforce limits
  6. Customer subscribes → SDK controls what they can access

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Integrate with your app

To bring everything you set up in the dashboard into your app, use one of these options:
  • SDKs (Node, Python, React, JavaScript) — check feature access and enforce usage limits in code
  • APIs — use for custom needs such as syncing usage or triggering upgrades
Webhooks are optional. The SDKs and UI widgets read access from Kelviq directly. Use webhooks when you want events in your own systems.
See the full integration guide →

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Need help?

Have questions, need help with implementation, or want a walkthrough?
Email us at hi@kelviq.com or book a demo.