Tool #6 · What we install in your business · In client work

Payments, Checkout & InvoicingStripe

Program fees, wholesale B2B orders, and SaaS subscriptions paid online with webhooks marking records paid automatically.

Last reviewed: 2026-10-22 · Status: In client work

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Full stack receipt#6 · In client work · reviewed 2026-10-22
#6Payments, Checkout & Invoicing

Stripe

In client work
1. What we use it for: We use Stripe Checkout Sessions, signed webhooks, and Stripe Invoicing to collect online program fees, wholesale B2B payments, SaaS subscriptions, and our own fixed-price project milestones.
2. Client use case · A nonprofit education centerState: live
Problem

Teacher-recruitment applicants needed to pay program fees online and have their application records marked paid in MongoDB automatically without manual staff reconciliation.

What the tool did

Wired Stripe Checkout Sessions in the Express backend (`checkout.controller.ts:286`, commit `69b23f1`) with a webhook that verifies payment completion and marks the application paid.

Result

Live in production processing applicant program fees and updating MongoDB application statuses automatically.

2. Client use case · MonliPetsState: live
Problem

Wholesale B2B pet-retailer orders needed online checkout connected to PostgreSQL, WooCommerce inventory, and multi-carrier shipping rates.

What the tool did

Integrated Stripe payment processing into the Next.js and PostgreSQL wholesale ordering portal alongside USPS/FedEx/UPS rate calculation.

Result

Live in production on the MonliPets wholesale platform (Disclosure: MonliPets is my wife's company; the numbers come from their books), and also running on our own pFrame.ai SaaS (which reached 2 paying customers and $212 in revenue as of 2026-10-12).

Disclosure: MonliPets is my wife's company; the numbers come from their books.

3. What it costs us or the client

2.9% + $0.30 per successful domestic card charge (plus 0.4%–0.5% for Stripe Invoicing when used); $0 monthly base fee (as of 2026-10-22).

4. Setup notes (how it is wired in)

Backend creates a Stripe Checkout Session carrying the internal application or order ID in `metadata`, and a raw-body webhook handler verifies `stripe-signature` before updating the database record idempotently.

5. What broke & how it was handled

Internal service docs on the nonprofit education center drifted from the code (`services.md` called the integration "Payment Links" while `checkout.controller.ts` actually ran Checkout Sessions), and on our own Greenville Home Pros directory Stripe stayed on test keys while the site remained `noindex` pre-launch—so we verify live webhook signatures and key prefixes before launching any checkout.

6. What we compared it against & why we picked it

Compared against Apple In-App Purchase + RevenueCat (mandatory for digital coaching subscriptions inside the RiseSync iOS app, where Apple rules forbid Stripe) and legacy club billing (a members’ dinner club had "Powered by Stripe" written in `/reserve` page copy while actual billing stayed in its legacy system). For web checkouts, B2B ordering, and agency invoicing, we picked Stripe.

7. Last reviewed: 2026-10-228. Video / tutorial: Included in our web platform and B2B portal walkthroughs
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Want Stripe wired into your business?

Bring the workflow or codebase to a free 15-minute fit call. We will tell you how we wire Stripe in production, what breaks first, and whether a $500 AI Staff Assessment fits your scope.

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or email david@nexaiadvisors.com about Stripe