Notes from building ApyHub.
Engineering write-ups, product decisions, and the occasional opinion on how to ship developer infrastructure. Long enough to be useful, short enough that you'll finish it.
OpenClaw skills and AI agent security: why a malware scan isn't trust
341 malicious skills on ClawHub showed how agents inherit supply chain risk. What a scan catches, what it misses, and what your agent should check first.
What Is an MCP Connector? How to Add One to Claude, ChatGPT and Le Chat
What an MCP connector is, and how to add one to Claude, ChatGPT and Le Chat step by step. Includes the URLs, where to find trusted connectors, and prompts to try.
Open AI models on dedicated GPUs: MasterA AI on ApyHub
Transcribe audio with Whisper, generate images with Flux, and turn prompts or photos into video. Six MasterA AI APIs on dedicated GPUs, now on ApyHub.
14 Cool APIs That Are Weird, Useless, and Weirdly Useful
14 fun APIs you can call in one line: Kanye quotes, cat status codes, developer excuses, fake companies, and more. Plus how to test them all at once.
ApyHub vs Apify: The Apify Alternative Built on Reviewed APIs
ApyHub vs Apify: reviewed APIs instead of an open actor store, a clear GDPR and site-terms policy, and the exact cost of every call.
PDF to Excel API: why FlowDocs uses rules instead of AI for tables
Convert invoices, statements, and reports to Excel with per-page pricing and the same output every run. FlowDocs PDF APIs, now on ApyHub and MCP.
How to Extend ChatGPT's Capabilities With Plugins: Files, Data, Validation and More
Extend what ChatGPT can do with plugins: convert files, extract text, validate VAT and IBAN, get live exchange rates. Categories, prompts to copy, and setup.
What Is Phishing? How AI Is Making It Worse, and How to Detect It in Your App with APIs
What phishing and data breaches are, how AI is changing both, and five API checks that catch phishing links and fake signups before they reach your users.
What Is a Business Day? How to Calculate Business Days in Code
A business day is a weekday that is not a public holiday. In code, observed holidays, time zones, inclusive ranges and regional calendars turn that definition into bugs. Libraries…
How Many Working Days Are in 2027? By Country and Month
There are 261 weekdays in 2027. See working days by country and month for the US, UK, Germany, France, Canada and Australia, after public holidays.
VAT Number Checker: How to Check and Validate an EU VAT Number
How to check an EU VAT number, what a valid result proves, why Germany and Spain return no company name, and how to automate the check before you invoice.
What Is an ICS File? How to Create, Open, and Import Calendar Invites (2026)
What an ICS file is, how to import it into Google Calendar, Outlook, and Apple Calendar, and how to generate .ics invites automatically with ApyHub's ICS Generator API.