Your payments, store and CRM don't talk to each other?

Orders get copied by hand, payments don't match your records, and customer data lives in three places. I connect the tools you already use with a reliable Python integration, so data moves automatically and nothing is charged, created or lost twice.

This is for you if • You copy orders, payments or contacts between tools by hand • You need Stripe payments and refunds wired into your own app • Your store and your CRM keep falling out of sync • An existing integration breaks, double-charges or silently drops events

What you receive • A working integration between the tools we agree on, tested in sandbox or test mode first • Webhooks verified by signature, so events can't be faked or processed twice • Idempotency keys, so a retried request never charges or creates a record twice • Retries with backoff and a circuit breaker, so one slow provider can't take your app down • A log of every call and event, so you can always see what happened and why • Full source code (a FastAPI service with interactive API docs), Docker setup, automated tests and a setup guide

Options you can add • Payments (Stripe): create, authorize, capture, cancel and refund payments, in full or in part, with payment-status webhooks • Stores (Shopify): sync orders, products, customers and inventory with your database or your other tools • CRMs (HubSpot and other CRMs with a REST API): create and update contacts, companies and deals from your app or store • Any REST API: connect a supplier, shipping, accounting or internal API behind one clean interface • Your database: keep a copy of orders, payments and contacts in PostgreSQL for reporting • Automation: scheduled syncs, plus alerts when a sync or a webhook fails • One unified API: several providers behind one endpoint and one response shape

You tell me which tools to connect and what should happen when, for example "a new paid order creates a deal in the CRM".

I send a written plan: data flow, field mapping, error handling, and what's in and out. Nothing starts until you approve it.

I build and test everything in sandbox or test mode first, never against live money.

We go live together and I watch the first real events.

You receive the code, the guide and a walkthrough, and I make your changes.

Proof you can check My open-source payment integration has a Stripe adapter, the full payment lifecycle (authorize, capture, refund), signed webhooks with replay protection, idempotency keys and a circuit breaker, with 105 automated tests and 95% coverage. https://github.com/mojtaba-py-code/universal-payment-gateway-integration

My unified API platform fetches many APIs at the same time and maps them into one schema behind a single REST API, with retries, rate limiting and circuit breakers. https://github.com/mojtaba-py-code/unified-api-integration-platform

Not included Stripe subscription billing or Stripe Checkout page setup, website or Shopify theme design, and paid API, plan or transaction fees (charged to you directly by the providers).

Ready to start? Send me a message with the tools you use and what should happen between them, and I'll reply with a plan before you order.