The ProdFix Blog

Production guides for solo founders, vibe coders, and indie hackers. Ship faster. Break less.

error_dashboard.tsx ● TypeError Cannot read properties of undefined · 142 events · 23 users ● UnhandledRejection Payment API timeout · 31 events · 8 users ● ReferenceError user is not defined · 18 events · 12 users ✓ 3 fixed this week via MCP + Cursor · avg fix time: 4 min ERROR RATE / 24H — before - - after fix
AI Integration
Streaming LLM Responses in Production: Handling Interruptions
Streaming AI responses can be interrupted at any point. Here's how to handle it gracefully in production.
2025-04-22 · 5 min read
⚠ New Error Detected TypeError: Cannot read properties of undefined Checkout.jsx:47 · 5 users · 2 min ago View in IDE → Dismiss Alert via 📧 Email · Slack within 60 seconds Fix via Cursor + MCP avg 4 min to fix
AI Integration
Monitoring AI Hallucinations in Production: Can You Catch Them?
AI hallucinations in production features can damage your users' trust. Here's how to monitor and minimize them.
2025-04-22 · 5 min read
⚠ CSP Violation script-src blocked · 3 events ⚠ XSS Attempt Blocked · /api/search ✓ Auth headers OK HSTS + SameSite set Security Score B+ VULNERABILITIES 2 critical 3 medium 12 passed prodfix · security monitoring · CSP · XSS · supply chain
AI Integration
Prompt Injection: The AI Security Risk Solo Founders Miss
Prompt injection is an emerging security risk for apps with AI features. Here's how to protect against it.
2025-04-23 · 5 min read
prodfix — terminal ❯ npx @prodfix/sdk init ✓ SDK initialized — 3 projects, 0 errors ❯ prodfix issues --project my-saas ● TypeError: Cannot read properties of undefined at Checkout.jsx:47 · 23 users affected · 142 events ● UnhandledRejection: Payment API timeout at api/checkout.js:89 · 8 users affected · 31 events ❯ _
How-To
How to Set Up Error Monitoring in Next.js in 5 Minutes
Step-by-step guide to adding ProdFix error monitoring to your Next.js app. Takes 5 minutes.
2025-04-18 · 4 min read
prodfix — terminal ❯ npx @prodfix/sdk init ✓ SDK initialized — 3 projects, 0 errors ❯ prodfix issues --project my-saas ● TypeError: Cannot read properties of undefined at Checkout.jsx:47 · 23 users affected · 142 events ● UnhandledRejection: Payment API timeout at api/checkout.js:89 · 8 users affected · 31 events ❯ _
How-To
How to Set Up Error Monitoring in React in 5 Minutes
Add error monitoring to your React app in 5 minutes. Catches JS exceptions, unhandled rejections, and more.
2025-04-18 · 4 min read
prodfix — terminal ❯ npx @prodfix/sdk init ✓ SDK initialized — 3 projects, 0 errors ❯ prodfix issues --project my-saas ● TypeError: Cannot read properties of undefined at Checkout.jsx:47 · 23 users affected · 142 events ● UnhandledRejection: Payment API timeout at api/checkout.js:89 · 8 users affected · 31 events ❯ _
How-To
How to Monitor API Errors in Production (Node.js Guide)
Capture and track API errors in your Node.js backend with this 5-minute setup guide.
2025-04-19 · 4 min read
⚠ New Error Detected TypeError: Cannot read properties of undefined Checkout.jsx:47 · 5 users · 2 min ago View in IDE → Dismiss Alert via 📧 Email · Slack within 60 seconds Fix via Cursor + MCP avg 4 min to fix
How-To
How to Set Up Slack Alerts for Production Errors
Get notified in Slack the moment a new error appears in production. Step-by-step setup guide.
2025-04-19 · 4 min read
prodfix — terminal ❯ npx @prodfix/sdk init ✓ SDK initialized — 3 projects, 0 errors ❯ prodfix issues --project my-saas ● TypeError: Cannot read properties of undefined at Checkout.jsx:47 · 23 users affected · 142 events ● UnhandledRejection: Payment API timeout at api/checkout.js:89 · 8 users affected · 31 events ❯ _
How-To
How to Track Custom Events with ProdFix
Track business events alongside errors for complete production visibility. Step-by-step guide.
2025-04-20 · 4 min read
prodfix — terminal ❯ npx @prodfix/sdk init ✓ SDK initialized — 3 projects, 0 errors ❯ prodfix issues --project my-saas ● TypeError: Cannot read properties of undefined at Checkout.jsx:47 · 23 users affected · 142 events ● UnhandledRejection: Payment API timeout at api/checkout.js:89 · 8 users affected · 31 events ❯ _
How-To
How to Add User Context to Error Reports
Know which user hit which error. Here's how to attach user context to every error report.
2025-04-20 · 4 min read
prodfix ● All Projects ○ Issues ○ Performance ○ Security ○ UX All Projects 98.7% uptime this month 3 open issues 1.4s avg LCP ● main-saas 142 errors · 23 open · LCP 1.8s critical ● side-project-2 8 errors · 1 open · LCP 2.1s warn ● chrome-ext 0 errors · all clear · LCP 0.9s good
How-To
How to Filter Noise from Your Error Monitoring Dashboard
Too many errors? Here's how to filter out browser extension noise and focus on real application errors.
2025-04-21 · 4 min read
prodfix — terminal ❯ npx @prodfix/sdk init ✓ SDK initialized — 3 projects, 0 errors ❯ prodfix issues --project my-saas ● TypeError: Cannot read properties of undefined at Checkout.jsx:47 · 23 users affected · 142 events ● UnhandledRejection: Payment API timeout at api/checkout.js:89 · 8 users affected · 31 events ❯ _
How-To
How to Upload Source Maps to ProdFix for Readable Stack Traces
Source maps make production stack traces readable. Here's how to set them up with ProdFix.
2025-04-21 · 4 min read
prodfix — terminal ❯ npx @prodfix/sdk init ✓ SDK initialized — 3 projects, 0 errors ❯ prodfix issues --project my-saas ● TypeError: Cannot read properties of undefined at Checkout.jsx:47 · 23 users affected · 142 events ● UnhandledRejection: Payment API timeout at api/checkout.js:89 · 8 users affected · 31 events ❯ _
How-To
How to Add Error Monitoring to SvelteKit
Complete guide to adding ProdFix monitoring to a SvelteKit app — both client and server errors.
2025-04-22 · 4 min read
prodfix — terminal ❯ npx @prodfix/sdk init ✓ SDK initialized — 3 projects, 0 errors ❯ prodfix issues --project my-saas ● TypeError: Cannot read properties of undefined at Checkout.jsx:47 · 23 users affected · 142 events ● UnhandledRejection: Payment API timeout at api/checkout.js:89 · 8 users affected · 31 events ❯ _
How-To
How to Add Error Monitoring to Astro
Add ProdFix to your Astro site in minutes. Covers SSR and static rendering.
2025-04-22 · 4 min read
Error rate over time last 30 days · errors per 1000 sessions ↑ deploy without monitoring ↓ ProdFix installed errors caught fast — actual - - trend · prodfix.com
How-To
How to Set Up Performance Monitoring for Core Web Vitals
Measure LCP, CLS, and INP from real users with this 5-minute setup guide.
2025-04-23 · 4 min read
session-replay.prodfixai.com Session: user_8f2a · 3m 42s · Chrome 124 · MacOS 3× rage click Submit button · no response dead clicks 0:00 3:42 UX SIGNALS 14 rage clicks this week 38 dead clicks this week 2.4 min avg session length
How-To
How to Track Rage Clicks on Your Site
Set up rage click detection to find UX problems before users abandon your app.
2025-04-23 · 4 min read
prodfix — terminal ❯ npx @prodfix/sdk init ✓ SDK initialized — 3 projects, 0 errors ❯ prodfix issues --project my-saas ● TypeError: Cannot read properties of undefined at Checkout.jsx:47 · 23 users affected · 142 events ● UnhandledRejection: Payment API timeout at api/checkout.js:89 · 8 users affected · 31 events ❯ _
How-To
How to Monitor Supabase Errors in Your Frontend
Supabase errors need to be captured in your frontend monitoring. Here's the exact setup.
2025-04-24 · 4 min read
⚠ New Error Detected TypeError: Cannot read properties of undefined Checkout.jsx:47 · 5 users · 2 min ago View in IDE → Dismiss Alert via 📧 Email · Slack within 60 seconds Fix via Cursor + MCP avg 4 min to fix
How-To
How to Monitor Stripe Webhook Failures
Stripe webhook failures cost you money. Here's how to monitor and alert on them immediately.
2025-04-24 · 4 min read
Cursor IDE Claude Code CLI MCP Model Context Protocol ProdFix Error Data Production App AI tools read production data in real-time via MCP
How-To
How to Debug Production Bugs with MCP: Step-by-Step Tutorial
The complete tutorial for using ProdFix MCP with Cursor to debug and fix production bugs.
2025-04-24 · 5 min read
PRE-LAUNCH CHECKLIST ✓ Error monitoring ✓ Alerts configured ✓ Performance tracking → Security scan MCP setup Rate limiting PROGRESS 4 / 6 items completed ⚠ NEXT UP Run security scan CSP + XSS audit Start scan →
Guide
Production Readiness Guide 2025: Is Your App Ready to Launch?
The definitive production readiness guide for 2025. Everything your app needs before real users arrive.
2025-04-18 · 7 min read
prodfix ● All Projects ○ Issues ○ Performance ○ Security ○ UX All Projects 98.7% uptime this month 3 open issues 1.4s avg LCP ● main-saas 142 errors · 23 open · LCP 1.8s critical ● side-project-2 8 errors · 1 open · LCP 2.1s warn ● chrome-ext 0 errors · all clear · LCP 0.9s good
Guide
JavaScript Error Monitoring: The Complete Guide for 2025
Everything about JavaScript error monitoring in 2025: what to capture, how to analyze, how to fix faster.
2025-04-18 · 8 min read
PRE-LAUNCH CHECKLIST ✓ Error monitoring ✓ Alerts configured ✓ Performance tracking → Security scan MCP setup Rate limiting PROGRESS 4 / 6 items completed ⚠ NEXT UP Run security scan CSP + XSS audit Start scan →
Guide
Technical Due Diligence for SaaS: What Buyers Look For
When you sell your SaaS, buyers examine your technical stack. Here's what they look for and how monitoring data helps.
2025-04-19 · 6 min read
Error rate over time last 30 days · errors per 1000 sessions ↑ deploy without monitoring ↓ ProdFix installed errors caught fast — actual - - trend · prodfix.com
Guide
Technical Debt Management for Startups: When to Pay It Down
Technical debt isn't always bad. Here's how to manage it strategically as a solo founder.
2025-04-19 · 5 min read
Error rate over time last 30 days · errors per 1000 sessions ↑ deploy without monitoring ↓ ProdFix installed errors caught fast — actual - - trend · prodfix.com
Guide
Error Rate Benchmarks for SaaS: What's Normal and What's Bad
What does a healthy error rate look like for SaaS? Industry benchmarks and what to aim for.
2025-04-20 · 5 min read
⚠ New Error Detected TypeError: Cannot read properties of undefined Checkout.jsx:47 · 5 users · 2 min ago View in IDE → Dismiss Alert via 📧 Email · Slack within 60 seconds Fix via Cursor + MCP avg 4 min to fix
Guide
The Production Incident Playbook for Solo Founders
When production breaks, you need a playbook. Here's the step-by-step guide for solo founders.
2025-04-20 · 6 min read
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