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The ProdFix Blog
Production guides for solo founders, vibe coders, and indie hackers. Ship faster. Break less.
⚠ 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
Security
OAuth Security Mistakes That Break Production Apps
OAuth implementations go wrong in specific ways. Here's what to watch for and how ProdFix catches violations.
2025-04-21 · 5 min read
✓
✓ CSP headers
script-src configured
✓ Auth tokens
httpOnly cookies
✗ Rate limiting
missing on /api/login
✓ HTTPS enforced
HSTS + redirect
✗ SQL injection
raw query at /search
✓ Input validation
all endpoints
prodfix · vibe coding safely · security monitoring
Security
SQL Injection Prevention in Node.js: What AI Gets Wrong
AI often writes vulnerable SQL. Here's how to prevent SQL injection in Node.js and detect it in production.
2025-04-21 · 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
Security
Data Breach Prevention for Solo Founder SaaS
The steps solo founders can take to prevent data breaches — and how to monitor for suspicious activity.
2025-04-22 · 6 min read
✓
✓ CSP headers
script-src configured
✓ Auth tokens
httpOnly cookies
✗ Rate limiting
missing on /api/login
✓ HTTPS enforced
HSTS + redirect
✗ SQL injection
raw query at /search
✓ Input validation
all endpoints
prodfix · vibe coding safely · security monitoring
Security
Rate Limiting Implementation Guide for Node.js APIs
Rate limiting protects your API from abuse and brute force. Here's how to implement it correctly.
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
Security
CORS Security: The Complete Guide for API Developers
CORS misconfiguration is a common security hole. Here's the complete guide to getting it right.
2025-04-23 · 5 min read
✓
✓ CSP headers
script-src configured
✓ Auth tokens
httpOnly cookies
✗ Rate limiting
missing on /api/login
✓ HTTPS enforced
HSTS + redirect
✗ SQL injection
raw query at /search
✓ Input validation
all endpoints
prodfix · vibe coding safely · security monitoring
Security
Security Headers Every SaaS Should Have (And How to Add Them)
These HTTP security headers protect your users at the browser level. Here's how to add all of them.
2025-04-23 · 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
Security
Supply Chain Attacks on Node.js: How to Protect Your SaaS
npm supply chain attacks are increasing. Here's how to protect your SaaS from compromised dependencies.
2025-04-23 · 5 min read
✓
✓ CSP headers
script-src configured
✓ Auth tokens
httpOnly cookies
✗ Rate limiting
missing on /api/login
✓ HTTPS enforced
HSTS + redirect
✗ SQL injection
raw query at /search
✓ Input validation
all endpoints
prodfix · vibe coding safely · security monitoring
Security
Subdomain Takeover: What It Is and How to Prevent It
Subdomain takeover is an underappreciated security risk for SaaS with multiple subdomains. Here's how to prevent it.
2025-04-24 · 5 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
UX
How to Monitor User Frustration Signals in Your SaaS
Rage clicks, dead clicks, error clicks — these signals tell you where users are frustrated. Here's how to monitor them.
2025-04-18 · 5 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
UX
Debugging Onboarding Drop-Off: The Technical Investigation
Users are dropping off your onboarding. Here's the technical investigation process using session replay and error data.
2025-04-18 · 6 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
UX
Dead Click Analysis: What They Reveal About Your UI
Dead clicks (clicking non-interactive elements) reveal confusion in your UI. Here's how to analyze and fix them.
2025-04-19 · 5 min read
✓
✓ CSP headers
script-src configured
✓ Auth tokens
httpOnly cookies
✗ Rate limiting
missing on /api/login
✓ HTTPS enforced
HSTS + redirect
✗ SQL injection
raw query at /search
✓ Input validation
all endpoints
prodfix · vibe coding safely · security monitoring
UX
Session Replay and Privacy: GDPR-Safe Implementation
Session replay can capture sensitive data. Here's how to implement it in a GDPR-compliant way.
2025-04-19 · 5 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
UX
Error UX Best Practices: How to Show Errors Without Losing Users
How you display errors determines if users stay or leave. Here's the UX research on what works.
2025-04-20 · 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 →
UX
Accessibility Errors in Production: How to Monitor and Fix Them
Accessibility violations affect real users and can be legal liabilities. Here's how to monitor them in production.
2025-04-20 · 5 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
UX
User Journey Error Mapping: Find Bugs That Kill Conversions
Map errors to specific points in the user journey to prioritize what to fix for maximum conversion impact.
2025-04-21 · 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
UX
Checkout Flow Error Analysis: Don't Lose Revenue to Bugs
Errors in your checkout flow directly cost you revenue. Here's how to monitor and eliminate them.
2025-04-21 · 5 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
UX
Mobile UX Error Patterns That Drive iOS and Android Users Away
Mobile users experience different errors than desktop users. Here's the patterns specific to mobile that cause churn.
2025-04-22 · 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
UX
Scroll Depth and Engagement: What the Data Tells You About Your Content
How far users scroll tells you what they engage with. Here's how to use this data to improve your SaaS.
2025-04-22 · 5 min read
Traditional tools
ProdFix
✗ Team-focused pricing
✗ Complex setup
✗ No AI fix suggestions
✗ No MCP integration
✗ Separate UX tool needed
✗ Separate perf tool needed
✗ Multiple dashboards
✓ Solo founder pricing
✓ 2-min setup
✓ AI fix suggestions
✓ Cursor + Claude MCP
✓ UX built-in
✓ Performance built-in
✓ One dashboard
$26+/user/month
Free · $13/mo starter
Comparison
ProdFix vs Datadog for Solo Founders: Which One Is Actually Right for You?
Datadog is powerful but expensive and complex. ProdFix is built for solo founders. Honest comparison with pricing.
2025-04-18 · 5 min read
Traditional tools
ProdFix
✗ Team-focused pricing
✗ Complex setup
✗ No AI fix suggestions
✗ No MCP integration
✗ Separate UX tool needed
✗ Separate perf tool needed
✗ Multiple dashboards
✓ Solo founder pricing
✓ 2-min setup
✓ AI fix suggestions
✓ Cursor + Claude MCP
✓ UX built-in
✓ Performance built-in
✓ One dashboard
$26+/user/month
Free · $13/mo starter
Comparison
ProdFix vs New Relic: Is New Relic Overkill for Indie SaaS?
New Relic is enterprise observability. Here's why indie founders shouldn't use it and what to use instead.
2025-04-18 · 5 min read
Traditional tools
ProdFix
✗ Team-focused pricing
✗ Complex setup
✗ No AI fix suggestions
✗ No MCP integration
✗ Separate UX tool needed
✗ Separate perf tool needed
✗ Multiple dashboards
✓ Solo founder pricing
✓ 2-min setup
✓ AI fix suggestions
✓ Cursor + Claude MCP
✓ UX built-in
✓ Performance built-in
✓ One dashboard
$26+/user/month
Free · $13/mo starter
Comparison
ProdFix vs Highlight.io: Feature-by-Feature Comparison
Highlight.io and ProdFix both offer session replay and error monitoring. Here's the honest comparison.
2025-04-19 · 5 min read
Traditional tools
ProdFix
✗ Team-focused pricing
✗ Complex setup
✗ No AI fix suggestions
✗ No MCP integration
✗ Separate UX tool needed
✗ Separate perf tool needed
✗ Multiple dashboards
✓ Solo founder pricing
✓ 2-min setup
✓ AI fix suggestions
✓ Cursor + Claude MCP
✓ UX built-in
✓ Performance built-in
✓ One dashboard
$26+/user/month
Free · $13/mo starter
Comparison
ProdFix vs LogRocket for Solo Founders: The Honest Comparison
LogRocket is the premium option. ProdFix is built for solo founders. Here's what you get with each.
2025-04-19 · 5 min read
Traditional tools
ProdFix
✗ Team-focused pricing
✗ Complex setup
✗ No AI fix suggestions
✗ No MCP integration
✗ Separate UX tool needed
✗ Separate perf tool needed
✗ Multiple dashboards
✓ Solo founder pricing
✓ 2-min setup
✓ AI fix suggestions
✓ Cursor + Claude MCP
✓ UX built-in
✓ Performance built-in
✓ One dashboard
$26+/user/month
Free · $13/mo starter
Comparison
Vercel vs Railway for Solo Founder SaaS: Which Should You Use?
Vercel and Railway are both excellent for solo founders. Here's the honest comparison for different use cases.
2025-04-20 · 5 min read
Traditional tools
ProdFix
✗ Team-focused pricing
✗ Complex setup
✗ No AI fix suggestions
✗ No MCP integration
✗ Separate UX tool needed
✗ Separate perf tool needed
✗ Multiple dashboards
✓ Solo founder pricing
✓ 2-min setup
✓ AI fix suggestions
✓ Cursor + Claude MCP
✓ UX built-in
✓ Performance built-in
✓ One dashboard
$26+/user/month
Free · $13/mo starter
Comparison
Supabase vs PlanetScale for Indie SaaS: Which Database to Choose
Both are excellent serverless databases for indie SaaS. Here's the comparison based on use case.
2025-04-20 · 5 min read
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