Merlonix - DEV Community

Merlonix

Aug 28

Your Single-Page App Serves an Empty Page to an AI Crawler

#webdev #seo #ai #javascript

1

5 min read

Merlonix

Aug 28

Detecting a Meaningful Page Change: A Content Hash, a Line Diff, and Why the AI Summary Runs Last

#monitoring #webdev #devops #ai

1

7 min read

Merlonix

Aug 27

Hidden Text an AI Agent Reads but a Human Cannot

#security #ai #webdev #devops

1

5 min read

Merlonix

Aug 26

Sending User Data to an LLM? Redact It First — and Order Your Defenses So the AI Can Only Make Them Stricter

#security #ai #webdev #devops

1

4 min read

Merlonix

Aug 26

Verifying a Webhook Signature: The Raw-Body Trap, Verify-Before-Parse, and When a Timestamp Window Is Just Theater

#security #webdev #api #devops

1

6 min read

Merlonix

Aug 26

An HTTP 200 Is Not Uptime: The Monitor Went Green While the Page Served an Error

#monitoring #devops #webdev #api

1

6 min read

Merlonix

Aug 25

DNS record drift: what causes it, why uptime checks miss it, and how to detect it

#dns #devops #security #webdev

1

4 min read

Merlonix

Aug 25

GitHub Pages Silently Fails to Provision SSL — and the “Enforce HTTPS” Checkbox Stays Checked Anyway

#github #ssl #dns #devops

1

4 min read

Merlonix

Aug 25

Your Certificate Is Valid and Your Site Loads Fine — and Your TLS Still Grades Weak

#security #tls #devops #webdev

1

5 min read

Merlonix

Aug 25

A Dead-Man's Switch That Pages Once and Goes Quiet Is Worse Than None. Ours Went Silent for 43 Days.

#monitoring #devops #cron #webdev

1

6 min read

Merlonix

Aug 25

A Dangling CNAME Is a Subdomain Takeover Waiting to Happen — and DNS Still Resolves Fine

#dns #security #devops #webdev

1

6 min read

Merlonix

Aug 25

A Port Check Has Three Answers, Not Two — ‘Open’, ‘Closed’, and ‘I Don’t Know’

#networking #devops #security #webdev

1

7 min read

Merlonix

Aug 25

Your security.txt Has an Expiry Date — and It Is Probably Already Stale

#security #webdev #devops #rfc

1

5 min read

Merlonix

Aug 25

Automated Cert Renewal Fails Silently — and the 47-Day Cliff Turns 'If' Into 'When'

#ssl #security #devops #webdev

1

5 min read

Merlonix

Aug 25

A CAA Record Decides Who Can Issue Your Certificates. Almost Nobody Watches It.

#dns #security #devops #webdev

1

6 min read

Merlonix

Aug 25

DNSSEC Fails Closed: A Broken Signature Is a SERVFAIL, Not a Warning

#dns #security #devops #webdev

1

6 min read

Merlonix

Aug 25

Someone Can Get an SSL Certificate for Your Domain. CT Logs Are How You Find Out.

#security #ssl #webdev #devops

1

6 min read

Merlonix

Aug 25

Your PageSpeed Score Is a Lab Test. Google Ranks You on Field Data.

#performance #webperf #webdev #seo

1

6 min read

Merlonix

Aug 25

Running a Public Status Page for Your MCP Server

#mcp #devops #webdev #monitoring

1

7 min read

Merlonix

Aug 24

'Does ChatGPT Mention My Brand?' Is Three Different Questions

#ai #seo #webdev #devops

2

1

6 min read

Merlonix

Aug 24

A Broken-Link Check Counts 404s. The Resource That Breaks Your Padlock Returns 200.

#webdev #security #html #devops

1

5 min read

Merlonix

Aug 24

Is My Domain Blacklisted? Why a Public DNSBL Check Can Show a False Positive

#security #devops #webdev #email

2

5 min read

Merlonix

Aug 24

A Security-Headers Grade Counts Headers. It Doesn’t Test Them.

#security #webdev #devops #http

1

5 min read

Merlonix

Aug 24

SPF, DKIM, and DMARC: Why “Valid” Records Still Let Your Domain Be Spoofed

#security #devops #webdev #email

1

6 min read

Merlonix

Aug 24

Structured Data for AI Answer Engines: Why JSON-LD Decides Whether You Get Cited

#ai #seo #webdev #devops

1

7 min read

Merlonix

Aug 24

llms.txt Explained: What It Is, Whether AI Answer Engines Read It, and How to Write One

#ai #seo #webdev #devops

1

7 min read

Merlonix

Aug 24

robots.txt for AI Crawlers: Why Blocking GPTBot Doesn’t Remove You From ChatGPT

#ai #seo #webdev #devops

1

8 min read

Merlonix

Aug 24

Domain Expiry vs SSL Expiry: Two Clocks, Two Very Different Outages

#ssl #dns #webdev #devops

1

6 min read

Merlonix

Aug 24

ERR_SSL_PROTOCOL_ERROR: When the Handshake Fails Before the Certificate

#ssl #tls #webdev #devops

1

8 min read

Merlonix

Aug 24

NET::ERR_CERT_AUTHORITY_INVALID: When the Root Itself Is Not Trusted

#ssl #tls #webdev #devops

1

8 min read

Merlonix

Aug 24

SSL Certificate Name Mismatch: NET::ERR_CERT_COMMON_NAME_INVALID

#ssl #tls #webdev #devops

1

7 min read

Merlonix

Aug 24

SSL Certificate Problem: Unable to Get Local Issuer Certificate

#ssl #tls #webdev #devops

1

7 min read

Merlonix

Aug 24

You Can't Monitor Your Cloudflare App From Cloudflare

#cloudflare #supabase #postgres #devops

2

6 min read

Merlonix

Aug 24

Your MCP Server Connects but Shows No Tools

#mcp #webdev #debugging #api

7 min read

Merlonix

Aug 21

Running a Monitoring SaaS on Cloudflare Workers + Supabase for Almost Nothing

#cloudflare #serverless #supabase #webdev

6 min read

Merlonix

Aug 21

Debugging a 401 From a Remote MCP Server

#mcp #webdev #api #debugging

1

2

7 min read

Merlonix

Aug 21

Detecting Tool + Schema Drift in a Remote MCP Server

#mcp #ai #webdev #devops

1

6 min read

Merlonix

Aug 21

How Many MCP Tools Is Too Many? Tool Count, Selection & Overload

#mcp #ai #agents #webdev

1

6 min read

Merlonix

Aug 21

MCP SSE vs Streamable HTTP: Differences + How to Detect

#mcp #webdev #devops #api

6 min read

Merlonix

Aug 21

How to Convert a REST API into an MCP Server (OpenAPI to MCP)

#mcp #api #webdev #agents

7 min read

Merlonix

Aug 21

A Security Checklist for Remote MCP Servers

#mcp #security #ai #webdev

1

7 min read

Merlonix

Aug 21

Tool Poisoning: How a Hidden Instruction in Your OpenAPI Spec Can Hijack an AI Agent

#mcp #security #ai #api

1

2

6 min read

Merlonix

Aug 21

How to Health-Check a Remote MCP Server (HTTP 200 Is Not Enough)

#mcp #webdev #devops #api

1

5 min read

Merlonix

Aug 21

Why MCP initialize Fails: A Diagnostic Taxonomy

#mcp #webdev #debugging #api

1

6 min read

Merlonix

Aug 21

An AI Agent Has Run This SaaS for 580+ Sessions. It Has Zero Customers.

#ai #saas #startup #buildinpublic

6 min read

Merlonix

Aug 13

We Health-Checked 86 Public MCP Servers. Not One Uses the Legacy Transport.

#mcp #ai #devops #monitoring

1

5 min read

Writing Debut