PreFlight field notes
Useful guides for shipping SaaS.
Clear, practical guides for the parts of a SaaS that fail quietly: payments, login, webhooks, deploys, production health, and SEO content workflows.
Payments / Featured field note
Protect your Stripe account before launch
A practical Stripe launch checklist for restricted keys, webhook routes, redirects, and payment-path verification.
May 14, 2026 10 min readWhat to check before your first SaaS launch
A short launch-readiness guide for payments, auth, email, SMS, webhooks, and production health.
7 min readSupport guide
How to read a PreFlight failure
A beginner-friendly guide to statuses, safe error codes, fix suggestions, transient warnings, and reruns.
7 min readSupabase
Supabase RLS audit: 9 policies to verify before launch
Row Level Security is your last line of defense. Here are the 9 RLS patterns that break silently and how to catch them before users do.
11 min readPayments
Stripe webhook verification: the complete guide for SaaS
Webhooks are how Stripe tells your app about payments. If verification fails silently, customers pay but never get access. Here is how to fix that.
12 min readLaunch checklist
The SaaS launch checklist for 2026: 25 things to verify
Auth, payments, email, webhooks, DNS, rate limits, backups, deploy gates, and monitoring — the complete pre-launch rundown.
14 min readCI/CD
Deploy gates: how to block broken releases automatically
Stop shipping failures to production. Deploy gates check your entire stack before a release goes live — payments, database, providers, everything.
9 min readLaunch readiness
Is my SaaS ready to launch? A production readiness framework
The honest checklist founders skip. Auth, payments, monitoring, backups, rate limits, and the ops baseline that separates a demo from a product.
10 min readDeployments
Vercel deployment monitoring for SaaS: catch drift before users do
Vercel deploys are instant but invisible when they break. Environment variable parity, domain drift, and deploy verification explained.
8 min readSecurity
Your API key is in the client bundle: how to find and fix it
Secret keys in JavaScript bundles and source maps are the most common security failure in modern SaaS apps. Here is how to detect and fix key exposure.
9 min readDatabase
Supabase backup verification: why you need a restore drill
A backup you have never restored is a backup you do not have. How to verify your Supabase backups are actually recoverable.
8 min readPayments
Stripe revenue reconciliation: catching silent payment drift
Customers pay but your database disagrees. Revenue drift happens silently and compounds daily. Here is how to detect and fix it automatically.
10 min readVibe coding
You vibe-coded a SaaS — now make it production-ready
AI built your app in a weekend. But Cursor, Bolt, and Lovable do not verify your Stripe webhook actually works or that your database is not exposed. Here is what to check.
11 min readSecurity
Next.js + Supabase security hardening for production
The default Supabase + Next.js setup is not production-ready. RLS gaps, exposed keys, missing headers, and auth misconfigurations explained and fixed.
13 min readOperations
Incident management for solo SaaS founders
You do not need PagerDuty. You need a simple system that groups failures into incidents, gives you a timeline, and tells you what to fix first.
8 min readDatabase
Supabase schema migration drift: the silent deploy breaker
When your migrations diverge from the deployed schema, API calls fail in production. How to detect and prevent schema drift.
9 min readLaunch readiness
The first 24 hours after SaaS launch: what breaks and when
Launch day is not when things break — it is 2-12 hours later when webhook retries exhaust, DNS caches expire, and rate limits hit. Here is the timeline.
10 min readMonitoring
Uptime monitoring vs health checks: why you need both
Uptime pings tell you the server responds. Health checks tell you the system works. Payments, auth, webhooks, and database can fail while uptime stays green.
8 min readPayments
Shadow Stripe checkout: test payments without a real card
Verify the full checkout loop — session creation, webhook delivery, and database side effect — with zero financial risk using synthetic Stripe testing.
9 min readSecurity
Rate limiting your SaaS API before launch: a practical guide
No rate limit means one bad actor or bot can crash your app. Here is how to implement and verify rate limiting before real traffic arrives.
10 min readWebsite security
What Is a Website Security Scanner?
A practical explanation of what automated website security scanners can observe, what they cannot, and how to use one before launch.
14 min readWebsite security
Website Scanner vs Vulnerability Scanner
Understand the difference between a broad website scanner and a focused vulnerability scanner, and when a SaaS team needs both.
14 min readAI app security
How to Audit an AI-Built App Before Launch
A security and reliability workflow for apps built with AI coding tools, from generated routes to real customer journeys.
14 min readWebsite security
The Website Scanner Checklist
The URLs, headers, assets, APIs, and customer paths worth including in a repeatable website scan.
14 min readSEO & AEO
Noindex vs Canonical: What Is the Difference?
Learn when to exclude a page from search with noindex and when to consolidate duplicate URLs with a canonical link.
14 min readSEO & AEO
Why a Sitemap URL Is Not Indexed
A practical explanation of discovered but not indexed URLs, from sitemap quality and internal links to content value and canonical drift.
14 min readSEO & AEO
SEO vs AEO: How They Work Together
Compare search engine optimization and answer engine optimization, including the shared technical foundations and different content signals.
14 min readSEO & AEO
JSON-LD Structured Data for SaaS
A practical guide to Organization, WebSite, SoftwareApplication, Article, BreadcrumbList, and FAQ markup for SaaS sites.
14 min readWebsite security
Security Headers Guide for Websites
What CSP, HSTS, frame policy, referrer policy, permissions policy, and content type headers do and how to roll them out safely.
14 min readRelease safety
The Pre-Deploy Security Checklist
A release checklist for secrets, dependencies, auth, APIs, headers, providers, and rollback before a production deploy.
14 min readAPI security
Public API Security Guide
A practical workflow for route inventory, authentication, authorization, validation, CORS, rate limits, errors, and logs.
14 min readWebsite operations
Website Health Check Guide
How to combine availability, performance, accessibility, security, and discoverability into one useful website review.
14 min readTechnical SEO
How to Fix Redirect Chains
Collapse unnecessary redirects, normalize the canonical host, and keep crawlers and visitors on the shortest useful path.
14 min readTechnical SEO
How to Fix Soft 404 Pages
Return the right status for missing content and give visitors a helpful replacement without misleading search crawlers.
14 min readTechnical SEO
How to Improve Crawl Efficiency for a SaaS Site
Help crawlers spend time on useful public pages instead of duplicate, private, filtered, or error routes.
14 min readTechnical SEO
Technical SEO for Next.js
Configure App Router metadata, dynamic pages, rendering, canonical URLs, robots, sitemaps, and structured data in Next.js.
14 min readTechnical SEO
SEO for Supabase-Backed Websites
Keep public content crawlable while separating server data access, authentication, and private Supabase records.
14 min readBuying guide
Choosing a Security Scanner for a Startup
Compare coverage, setup, evidence, repeatability, ownership, and escalation when choosing an early security workflow.
14 min readAgency operations
How Agencies Can Standardize Website Scans
Create a repeatable, client-safe audit and handoff workflow across multiple websites without mixing evidence or access.
14 min readSecurity operations
How to Keep Security Audit Evidence
The scope, timestamp, observation, owner, fix, rerun, and retention fields that make an automated audit useful later.
14 min readLaunch verification
SaaS Launch Verification: The Pre-Launch Checklist That Catches Silent Failures Before Customers Pay
Avoid a quiet launch failure with this 24-hour pre-flight checklist for SaaS founders. Verify Stripe, auth, email, and database side effects—with immutable
18 min readLaunch verification
What PreFlight Verifies Before Your SaaS Meets Real Traffic
PreFlight probes the handoffs that fail quietly at launch — payments, webhooks, data access, auth, and the public surface — and keeps the evidence.
12 min read