Every Stripe decline code, what it actually means, and whether retrying will help
When a card payment fails in Stripe, you get a short string back — insufficient_funds , do_not_honor , authentication_required . Most teams glance at …
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Сервер работает. Продукт — уже нет
Большинство команд следят за серверами, базами данных и доступностью приложений. Но самые дорогие инциденты часто происходят совсем в другом месте. Ис…
Paddle is not a serious service
I build serious SaaS with my +20yr XP web & product. For my last SaaS I implemented Paddle as payment service because their baseline looked cool :…
I Built a Production-Ready Node.js SaaS Boilerplate So You Don't Have To
Every time I started a new SaaS project, I spent the first 3 days building the same things. Auth. Billing. Database setup. Deployment config. Every. S…
How to build a credit system for a Next.js AI app (Stripe + Supabase)
If you're building an AI app (image generation, transcription, an agent, anything that calls a model) you've probably realized a flat "$10/month" does…
Stripe Webhook Idempotency in FastAPI: Handling Duplicate Events Without Double-Charging SaaS Customers
Stripe Webhook Idempotency in FastAPI: Handling Duplicate Events Without Double-Charging SaaS Customers I learned this lesson the hard way. Three mont…
Stripe and Friendly Fraud: What the HN Crowd Got Right — and What Progenix Does About It
If you were on Hacker News yesterday, you saw it. A detailed post-mortem from a merchant who lost thousands of dollars to friendly fraud — customers d…
How I wired Stripe subscriptions to Supabase in Next.js 15 (the parts tutorials skip)
Every SaaS needs the same foundation: auth, payments, a database, protected routes. I've built this from scratch too many times. This post covers the …
I got tired of clicking through the Stripe dashboard, so I built a CLI
It was a Tuesday night, and I was renaming a price in the Stripe dashboard. A price I had already renamed in our code three weeks earlier. The deploym…
From Years to Hours
It's not a brag for me to say "I've been visualizing infrastructure since 2018" - it's the actual truth. That was the year I joined a lovely Portland-…
Why your Stripe webhook might be silently dropping events (and how to find out)
If you process Stripe subscriptions and have never opened Workbench → Webhooks → Event deliveries (or the older Developers → Webhooks → Attempts view)…
Why we treat credits and wallets as first-class billing primitives
tl;dr: Most billing systems model a credit wallet as a prepaid cash balance. That works at day zero. It breaks the moment your product has multiple ty…
The MCP Economy: How AI Agents Will Pay Each Other
MCP servers let AI agents use tools. But the real unlock is agents paying agents. Here's the vision behind AgentPay: Today: Humans buy subscriptions f…
How to Monetize an MCP Server — Payment Links, Guardrails, and Scoped Tokens
MCP (Model Context Protocol) servers let AI agents use tools. But how do you charge for them? Here's the stack I use across 61 MCP servers: The Paymen…
Building a Payment Processor: The Final One Percent
I had idempotency, a message queue, and retries. I thought I was finally building something production-ready. Then I started thinking about the "in-be…
AI usage billing gets complicated fast — here's what breaks first
At first, AI billing looks simple. A user makes a request. You charge them. Done… right? Not really. Once your AI product starts getting real traffic,…
An agent can now buy a domain. The trust gap stopped being a slide.
On April 30, Cloudflare and Stripe launched Projects . An agent can now create a Cloudflare account, register a domain, and deploy a Worker, paying wi…
Stripe Webhook Was Silently Failing for 5 Days: The 4xx Retry Trap and the Beginning-of-Month Time Bomb
TL;DR 21 invoice.paid webhooks failed for 5 straight days in production. We only noticed because Stripe sent a "we'll auto-disable this endpoint by 5/…
5 best usage-based billing platforms for vibe coders
The best usage-based billing platforms for vibe coders include Credyt for real-time AI billing with prompt-based setup inside Cursor, Lovable, Bolt, a…
Localize Stripe Prices to the Visitor's Currency in 25 Lines
Stripe is opinionated: a Price object has one currency. If your product is priced at $79 USD, that's what Stripe charges. But for conversion optimizat…
Building a Payment Processor: My First Attempt Was a Disaster
I wanted to figure out how people build payment systems without losing everyone's money. It turns out, my first attempt was a great way to lose a lot …
The AI "Intelligence-Authority" Gap: Why Your Agents Need a Deterministic Handbrake
We are currently witnessing a massive shift in AI development. We’ve moved past the "Chatbot" era and into the era of Agentic Systems—AI that doesn’t …
Never trust the client with your Stripe price
I was reading a Stripe tutorial last week and watched the author write amount: req.body.amount . That single line lets any user buy Premium for $1. It…