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.
HTTP Status Codes: A Developer's Cheat Sheet (With Fixes for the Common Errors)
A practical HTTP status code cheat sheet: what every code class means, the ~25 codes you'll actually hit, and how to fix the common 4xx and 5xx errors — with curl examples and a q…
7 AI Hiring APIs to Automate Recruitment, From Job Post to Offer (2026)
AI hiring APIs can run the whole recruitment funnel — resume screening, job description generation, interview prep, salary benchmarking and more. Here's how seven of them fit a mo…
Beyond RapidAPI: 7 API Marketplaces That Actually Support AI Agents in 2026
RapidAPI defined the category, but the agentic shift has reshaped it. Here are 7 API marketplaces — ApyHub, Postman, Kong, Nango, Merge, APILayer, and Rapid — compared on how well…
Top 5 APIs Every AI Agent Needs in 2026 (Plus a Bonus)
AI agents can reason and write but they can't act without tools. Here are 5 ApyHub utility APIs that give agents hands: reading documents, extracting data, generating files, and r…
The API Sprawl Problem in Ecommerce: How Teams Lose Time to Utility Code
Ecommerce teams rebuild the same ~30 utilities — PDF generation, image resize, file conversion, email validation — instead of shipping product. Here's why API sprawl happens, what…
Guide: Building a Product Recommendation Engine That Doesn't Hallucinate
Vector-only recommendation demos fall apart in production — stale embeddings, latency spikes, hallucinated prices and stock. Here's the hybrid RAG pattern (vectors for discovery,…
Top 5 Free APIs for Side Projects That Actually Matter
A short, honest list of free APIs you can actually build a side project on in 2026 — Supabase, Stripe, Resend, Groq, and ApyHub — with real free-tier limits, where each one shines…
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Full Site Audit API – Page-Level SEO, Security, and Mobile Checks in One Call
Run a page-level audit covering metadata, security headers, mobile-friendliness, and broken links with one API call. See how the Full Site Audit API works, what it returns, and wh…
What Does "AI-Ready" Actually Mean for an API?
AI-readiness for an API isn't one property. It's three — machine-discoverable, machine-verifiable, and machine-tolerant. Here's what each one actually requires.
Best Document Conversion APIs in 2026
Compare the top document conversion APIs in 2026 — pricing, formats, MCP/agent-readiness, and where each one shines or lags. Updated guide for developers choosing a conversion API.
Paraphrasing in the Age of AI: Why Uniqueness, SEO, and a Powerful Text API Matt
Discover how the Paraphrase Text API improves SEO, content uniqueness, and scalable rewriting with a powerful, developer-friendly text API.
Automate Invoice Processing with SharpAPI’s Invoice Parsing API on ApyHub
Streamline accounts payable and finance workflows with SharpAPI’s Invoice Parsing API. Extract over 100 fields from any invoice—PDFs, scans, or photos—and integrate structured JSO…