Infrastructure
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Autumn
Billing infrastructure for SaaS. Pricing tables, credit-based metering, checkout, and customer portal - all in TypeScript.
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Autumn is the billing layer most new SaaS apps in 2026 are adopting in place of rolling their own Stripe integration. You define products, prices, and credit packs in TypeScript, Autumn handles checkout, customer portals, usage metering, and webhook delivery. The library is explicit about what runs where: server-side entitlement checks, client-side pricing tables, a single source of truth for billing state. It is particularly popular in the Claude-Code-built SaaS cohort because the setup time from zero to a working checkout is measured in minutes rather than days. The ergonomics are closer to Clerk than to raw Stripe.
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Billing infrastructure for SaaS. Pricing tables, credit-based metering, checkout, and customer portal - all in TypeScript.
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