The APlicious Blog
Engineering deep-dives, product decisions, and the thinking behind building an API platform used by 10 namespaces.
Building the /tools namespace — 20 endpoints, one key, zero boilerplate
How we designed and shipped the APlicious Tools namespace: OCR, audio transcription, TTS, PDF processing, image utilities, QR codes, URL shortener, email/phone validation, and NLP — all behind a single API key.
Build an OCR invoice processor in a weekend with /tools/ocr
Step-by-step tutorial: extract line items, totals, and vendor details from any invoice image using the APlicious OCR endpoint. Deploy a working Next.js app in under 48 hours.
How we built the /legal namespace: 30 endpoints across 22+ jurisdictions
Jurisdiction comparison, document generators, compliance checklists — how APlicious built a 30-endpoint legal data namespace without claiming to be a law firm.
Building a 20-endpoint property and mortgage calculator API
How APlicious built mortgage amortization, affordability, stamp duty, capital gains, and a weighted neighborhood-scoring calculator — and why we mark every endpoint's data provenance in the source.
How to build a SIP and compound interest calculator with one API
Building an investment growth calculator on APlicious — SIP future value, compound interest with custom compounding frequency, and a year-by-year breakdown, with the real formulas behind both endpoints.
How to build a job board with search, salary data, and resume scoring
A practical walkthrough of the /jobs namespace — listing search, salary estimation, and an action-verb-aware resume scorer — for builders putting together a job board or career tool.
The math behind our $19 / $49 / $199 pricing tiers
Why APlicious prices at $19 Starter, $49 Growth, $199 Scale instead of usage-metered billing — and the competitor research that moved Starter from $9 to $19.
How to build a legal document generator SaaS on top of /legal
A practical guide to building a 'generate your terms of service' tool using APlicious' /legal namespace — conditional clause assembly, not fill-in-the-blank templates.
How we source real (not fake) data for 34 API namespaces
APlicious marks every route's data provenance in source comments — owned datasets, free proxies, and named pure-computation formulas. Here's the taxonomy and why it exists.
Why every endpoint returns the same response envelope, even error responses
The two functions — apiSuccess and apiError — that every one of APlicious' 400+ endpoints calls to format its response, and why a single shared shape matters more than it sounds like it should.
How to build a recipe app with 100 originally-authored recipes
Building a recipe search, random-recipe, and cuisine-browse app on APlicious — and why every recipe is written for the platform specifically, with zero scraped or licensed third-party content.
How to build a study app: university lookup and quiz generation
Building an education tool on APlicious — university search backed by a real ingested dataset, and a quiz generator with explanations and difficulty tagging, not random multiple-choice.
How to build a crypto and stock dashboard with live Yahoo Finance data
Building a portfolio dashboard on APlicious — live stock and crypto quotes, a top-100 leaderboard, and the Crypto Fear & Greed Index, all key-free on our upstream end.
How to build a wellness app: mood tracking, stress scoring, and sleep quality
Building a wellness app on APlicious — multi-factor mood tracking with CBT-style reframes, a six-factor stress score, and sleep quality analysis, with real request shapes.
How to build a DCF valuation tool with terminal growth and a discount rate slider
Building a Discounted Cash Flow valuation calculator on APlicious — projected cash flows, terminal value, and intrinsic value, with the real formula and parameters behind /finance/dcf.
What went into the /finance namespace — stock quotes, forex, EMI, crypto
How the APlicious finance namespace sources and normalizes stock quotes, forex rates, EMI calculations, and crypto prices from key-free upstream sources.
How we built per-plan rate limiting with Upstash Redis + sliding window
Why sliding window beats fixed window rate limiting at scale, and how APlicious implements per-plan limits with Upstash Redis in a single auth middleware call.
Why developer experience is the only moat that matters for API platforms
APILayer has more namespaces, RapidAPI has more traffic — neither invested in developer experience. Why DX, not endpoint count, is the real moat for an API platform.
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