Building in public · Paraguay

Tools built for
developers & makers

APIs, browser extensions, VS Code tools, Notion templates, Apify actors, and SaaS products — all crafted by one developer, shipped continuously.

26 Live APIs
43 Digital Products
26 Extensions
8 SaaS Tools
Browse APIs → Shop on Gumroad

What I build

6 product categories,
one developer.

From serverless APIs to Notion templates — everything runs at $0 infra cost.

⚡
RapidAPI
Developer APIs
Cloudflare Workers–hosted APIs for common developer tasks. Free tier available on every API.
QR Code · Email Validation · WHOIS Screenshot · SEO Analyzer · NLP Text Currency · AI Generation · PDF · +17 more
26 Explore APIs →
📦
Gumroad
Digital Products
Notion templates, AI prompt packs, and automation playbooks. Buy once, use forever.
Notion: Life OS · Freelance Business OS CRM · Content Creator Dashboard AI Prompt Packs · n8n Templates
43 Shop now →
🌐
Chrome Web Store
Chrome Extensions
Manifest V3 extensions with Apple-style dark UI. Privacy-first, no data collection.
SEO Inspector · JSON Formatter Pro AI Text Rewriter · Color Picker Domain WHOIS · Page Speed · +8 more
14 View extensions →
💡
VS Code Marketplace
VS Code Extensions
Productivity tools for daily development workflows. All free on the marketplace.
Paste & Transform · Debug Log Cleaner Env File Lens · Commit Crafter Markdown Table Pro · i18n Helper · +6
12 Get extensions →
🤖
Apify Store
Apify Actors
Web scraping and data extraction actors. Pay-per-result pricing, no server management.
SEO Analyzer · Social Video Downloader Keyword Research · Trends Aggregator Company Data Enricher · +9 more
14 Browse actors →
🚀
SaaS
SaaS Products
Web applications solving specific problems for WordPress users, developers, and researchers.
WP Linker · ListingAI · Keisan Tools pSEO AI Tools · City Cost Compare Currency Converter · QR Generator
8 See SaaS →

RapidAPI · Cloudflare Workers

26 Developer APIs

All APIs hosted on Cloudflare's edge network. 100% uptime, free tier on every endpoint.

01QR Code Generator 02Email Validation 03Link Preview & Metadata 04Website Screenshot 05Text Analysis & NLP 06IP Geolocation 07URL Shortener 08JSON Formatter 09Hash & Encoding 10Currency Exchange Rate 11AI Text Generation (Llama 3.1) 12Social Video Downloader 13Crypto Data Aggregator 14SEO Analyzer 15Weather Intelligence 16WHOIS Domain Info 17News Aggregator 18AI Translation (m2m100) 19Trends Aggregator 20Company Data Enrichment 21WP Internal Link Optimizer 22PDF Generator 23Placeholder Image 24Markdown Converter 25Color Palette Generator 26Password Generator
View all 26 APIs on RapidAPI →

Gumroad · tatsuya27.gumroad.com

43 Digital Products

Notion templates, AI prompt packs, and automation playbooks. Instant download after purchase.

Freelance Business OS
Notion Template
$19
Life OS — Second Brain
Notion Template
$19
Digital Products Business OS
Notion Template
$19
Small Business CRM
Notion Template
$17
Content Creator Dashboard
Notion Template
$15
Side Hustle Tracker
Notion Template
$12
Social Media Planner
Notion Template
$14
Book & Learning Tracker
Notion Template
$9
Job Search Tracker
Notion Template
$9
Student Study Hub
Notion Template
$9
Social Media Marketing Mega Prompts
AI Prompt Pack
$12
Ultimate Bundle — All 10 Templates
Bundle
$49
SEO Content Planner
Notion Template
$14
AI Automation Playbook
AI Prompt Pack
$15
Expense Tracker Pro
Notion Template
$9
Habit & Goal Tracker
Notion Template
$9
Browse all 43 products →

Chrome · VS Code · Apify

40 Extensions & Actors

Browser extensions, editor plugins, and web automation actors — all free to install.

Chrome Extensions (14)

🔍
SEO Inspector
Published
 📄
JSON Formatter Pro
Published
 🤖
AI Text Rewriter
Published
 🎨
Color Picker
Published
 🌐
Domain WHOIS Lookup
Published
 💱
Quick Currency Converter
Under review
 ⚡
Page Speed Checker
Under review
 🔐
Hash & Encode Tool
Under review
 📝
Lorem Ipsum Generator
Under review
 🔧
Regex Tester
Under review
 📑
Tab Manager & Session Saver
Pending submit
 📝
Quick Notes
Published
 ⏱️
Focus Timer
Published
 📖
Reading Time Estimator
Pending review

VS Code Extensions (12)

📋
Paste & Transform
miccho27
 🧹
Debug Log Cleaner
miccho27
 🔍
Env File Lens
miccho27
 ✍️
Commit Crafter
miccho27
 📌
File Sticky Notes
miccho27
 📊
Markdown Table Pro
miccho27
 📡
API Response Viewer
miccho27
 🌍
i18n Helper
miccho27-dev
 🗂️
Smart Folding
miccho27-dev
 📸
Doc Snapshot
miccho27-dev
 🔗
Link Checker
miccho27
 🎯
TODO Highlighter
miccho27

Apify Actors (14)

🔍
SEO Analyzer
$3.00 / 1K results
 📹
Social Video Downloader
$2.00 / 1K results
 📈
Keyword Research
$3.00 / 1K results
 📊
Trends Aggregator
$2.00 / 1K results
 🏢
Company Data Enricher
$5.00 / 1K results
 🔬
Website Tech Detector
$3.00 / 1K results
 🛒
Amazon Product Scraper
$3.00 / 1K results
 📧
Email Finder
$3.00 / 1K results
 🗺️
Google Maps Scraper
$3.00 / 1K results
 📰
News Article Scraper
$2.00 / 1K results
 ⭐
Review Aggregator
$3.00 / 1K results
 🔗
Backlink Checker
$4.00 / 1K results
 ⭐
Google Maps Reviews Scraper
$3.00 / 1K results
 📺
YouTube Channel Analytics
$3.00 / 1K results

SaaS · Web Applications

8 SaaS Products

Hosted web applications built with Next.js, deployed on Vercel.

SaaS · Free Tier Available
WP Linker
Automated internal link optimizer for WordPress. Analyze your posts, discover link opportunities, and boost your SEO with one click. Free plan: 30 posts / week.
Free $0 Pro $19/mo Agency $49/mo
wp-linker.vercel.app →
pSEO · 5,056 Pages
AI Tool Compare
Programmatic SEO site comparing 291 AI tools across 12 categories. Find the best AI tools for writing, coding, image generation, and more.
Free 291 AI Tools 12 Categories
ai-tool-compare-nu.vercel.app →
Tools · AdSense Monetized
Keisan Tools
463 high-precision calculators and simulation tools. Money, health, business, math, and unit conversion tools for everyday decisions.
Free 463 Calculators 7 Categories
keisan-tools.com →
SaaS · AI-Powered
ListingAI
AI-powered product listing generator for e-commerce. Bulk generate SEO-optimized descriptions with legal compliance checks built in.
Free Tier 154 pSEO Pages
listing-ai.vercel.app →
pSEO · Data-Driven
City Cost Compare
Compare cost of living across cities worldwide. Data-driven programmatic SEO pages for city-by-city analysis.
Free
city-cost-pseo.vercel.app →
Tool · Real-Time Rates
Currency Converter
Real-time currency conversion with live exchange rates. Fast, simple, and ad-supported.
Free
currency-converter-psi.vercel.app →
Tool · Free
QR Code Generator
Free online QR code generator. Create QR codes for URLs, text, Wi-Fi, and more. Client-side generation, no data sent to servers.
Free
Coming soon →

Find me on these platforms

⚡
RapidAPI
26 APIs
 📦
Gumroad
43 Products
 🌐
Chrome Web Store
14 Extensions
 💡
VS Code Marketplace
12 Extensions
 🤖
Apify Store
14 Actors
 𝕏
Twitter / X
@prodhq27
 ✍️
Dev.to
miccho27