Yuhe He

Solo builder: public-data tools (OSINT) + field notes on scraping, rate limits, data quality. tg_crawl - Telegram scraper, no API keys. Data sets: kaggle.com/datasets/yuhehe2003

New Taipei City, Taiwan Joined on Oct 9, 2026 https://heyuhe.gumroad.com

Work

Solo builder - public-data tools & OSINT research

Yuhe He

Oct 13

Ten Lines That Fix Proxy Rotation in a Web-Scraping Platform (issue assignment PR, in 2 hours)

2 min read

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Yuhe He

Oct 13

robots.txt Is a Contract: Parsing It Without Lying to Yourself

#automation #softwaredevelopment #webscraping

2 min read

Yuhe He

Oct 13

Your Dataset's README Is Part of the Data - Audit It Before Every Publish

#data #documentation #webscraping

3 min read

Yuhe He

Oct 13

Circuit Breakers for Scrapers: When to Stop a Run That Is Going Bad

#architecture #automation #python #webscraping

3 min read

Yuhe He

Oct 13

22 Hand-Placed Comments, 0 Sales: The Full Ledger of a Cold-Comment Campaign

#buildinpublic #marketing #sideprojects #startup

2 min read

Yuhe He

Oct 13

Your Scraper's Politeness Layer Deserves a Unit Test, Not a Prayer

#automation #testing #webscraping

3 min read

Yuhe He

Oct 12

GhostAction Is Harvesting CI Secrets Right Now — A 15-Minute Self-Audit

3 min read

Yuhe He

Oct 12

Your Scraper's "Success" Metric Is Lying When the Site Sends You an Empty 200

#data #debugging #softwareengineering #webscraping

3 min read

Yuhe He

Oct 12

Why "No New Posts Today" Is the Most Dangerous Line in Your Crawler's Log

3 min read

Yuhe He

Oct 12

Storing Scraped Data: CSV, JSONL, or SQLite Before Your Pipeline Bends

#data #database #dataengineering #webscraping

3 min read

Yuhe He

Oct 11

The 429 Playbook: Handling Rate Limits Before Your IP Gets Banned

#api #backend #performance #webscraping

2 min read

Yuhe He

Oct 11

Merging Two Messy CSVs: The Key Problems Excel Formulas Hide From You

#webdev #datascience #sql #beginners

3 min read

Yuhe He

Oct 11

IP Geolocation APIs Compared: What the Free Tier Really Gives You

#webdev #api #tutorial #opensource

3 min read

Yuhe He

Oct 10

requests vs httpx for Scraping: When the Faster Client Stops Saving You Money

#performance #python #webscraping

3 min read

Yuhe He

Oct 10

Scrapy vs BeautifulSoup for Public-Data Collection: Where Each One Starts Costing You

#python #softwaredevelopment #webscraping

2 min read

Yuhe He

Oct 10

Telethon vs Tweepy: What Each Python Client Library Actually Costs You to Collect Public Data

#python #telegram #opensource #webdev

4 min read

Yuhe He

Oct 10

Telegram API Free Options, Ranked: What Each Route Actually Costs You

#webdev #python #opensource #telegram

2 min read

Yuhe He

Oct 10

Telegram Bot vs Telegram Scraper: Which One You Actually Need (No API Key Required)

#webdev #python #opensource #telegram

2 min read

Yuhe He

Oct 10

How to Scrape Public Telegram Channels Without an API Key (Step by Step)

#webdev #python #opensource #tutorial

2 min read

Yuhe He

Oct 10

From 1,271 Raw Messages to Three CSV Files: A Real Dedup Pipeline

#webdev #datascience #opensource #beginners

2 min read

Yuhe He

Oct 10

How to Monetize Data as a Solo Dev: The Three Product Shapes That Actually Sell

#indiehackers #datascience #startup #saas

2 min read

Yuhe He

Oct 10

What Is a Data Product? The Four Shapes Strangers Actually Pay For

#datascience #saas #startup #product

2 min read

Yuhe He

Oct 10

The Pricing Ladder for Solo Data Builders: What Strangers Actually Pay For

#indiehackers #datascience #business #writing

2 min read

Yuhe He

Oct 10

16 Articles, 8 Views, 0 Sales: The Honest Ledger of a Solo Dev's First 24 Hours

#indiehackers #sideprojects #startup #marketing

2 min read

Yuhe He

Oct 10

Sell the Line, Not the Dots: What Strangers Actually Pay Solo Data Builders For

#indiehackers #datascience #saas #programming

2 min read

Yuhe He

Oct 10

How to Find Telegram Channels: Directories, Cross-posts, and the Discovery Graph

#telegram #osint #datascience #webdev

2 min read

Yuhe He

Oct 10

How to Find Telegram Channels: The Discovery Layers Directories Never Tell You

#telegram #osint #webdev #datascience

2 min read

Yuhe He

Oct 10

Free OSINT Tools That Actually Work (and Where the Free Tiers Stop Lying to You)

#osint #security #webdev #devsecops

2 min read

Yuhe He

Oct 10

Free OSINT Tools That Actually Work: A Job-by-Job Map (Free Tiers, Real Ceilings)

#osint #security #devops #tools

2 min read

Yuhe He

Oct 10

Best OSINT Tools: The Free Stack That Does 80 Percent of Real Investigations

#osint #security #tools #tutorial

2 min read

Yuhe He

Oct 10

Free OSINT Tools That Survive Contact With a Real Investigation

#osint #security #python #webdev

2 min read

Yuhe He

Oct 10

Telegram Scraping in Python Without an API Key: The Public-Preview Collector That Survives

#python #telegram #scraping #osint

2 min read

Yuhe He

Oct 10

Telegram Viewer in Your Browser: Reading Public Channels Without the App (and What Builders Can Do With It)

#telegram #osint #webdev #tutorial

2 min read

Yuhe He

Oct 10

Telegram Viewer Online: Read Any Public Channel History From a Browser

#telegram #tutorial #webdev #osint

2 min read

Yuhe He

Oct 10

How to Read Telegram Channels Without the App (Browser Preview Guide)

#telegram #tutorial #web #osint

2 min read

Yuhe He

Oct 10

What Is OSINT? A Practitioner's Answer for Builders, Not Enthusiasts

#osint #security #datascience #tutorial

2 min read

Yuhe He

Oct 10

What Is OSINT, Exactly - A Builder's Definition That Survives a Legal Review

#osint #security #datascience #privacy

2 min read

Yuhe He

Oct 10

A Telegram Scraper in 20 Lines of Python (No API Keys, No Login)

#python #telegram #scraping #osint

2 min read

Yuhe He

Oct 10

How to Monitor Public Telegram Channels for Free (No API Key, No Bot)

#telegram #osint #python #monitoring

2 min read

Yuhe He

Oct 10

Is OSINT Legal The Boundary of Publicly Available Data (Builder's Map)

#osint #privacy #security #datascience

3 min read

Yuhe He

Oct 10

Free Website Change Monitoring in 20 Minutes, Without a Vendor

#webdev #osint #tutorial #product

3 min read

Yuhe He

Oct 10

Telegram View Counts: How to Spot a Botted Channel in Five Minutes

#telegram #osint #datascience #tutorial

2 min read

Yuhe He

Oct 10

What You Can Actually See in a Public Telegram Channel Without an Account

#telegram #osint #webdev #datascience

2 min read

Yuhe He

Oct 10

How to See Full Telegram Channel History Without Login (the before-parameter Trick)

#telegram #osint #webdev #tutorial

2 min read

Yuhe He

Oct 10

How to See Full Telegram Channel History Without Login (the ?before= Trick)

#telegram #osint #webdev #tutorial

2 min read

Yuhe He

Oct 10

Telegram Channels Are Order Books: Volume Spikes Precede Price Moves

#datascience #automation #sideprojects #webdev

2 min read

Yuhe He

Oct 10

Sixteen Articles in 24 Hours: What a Solo Dev's Content Ledger Taught Me

#indiehackers #marketing #webdev #automation

2 min read

Yuhe He

Oct 10

Five Free Public Checks Before You Wire a Supplier You Have Never Met

#opensource #security #beginners #webdev

2 min read

Yuhe He

Oct 10

Diffing Word Frequency in Public Investor Memos: Change Detection That Sells

#python #datascience #text #automation

2 min read

Yuhe He

Oct 10

4 Hours, 9 Channels, 28 Real Events: A Brand-Listening Case Walkthrough

#osint #datascience #productivity #webdev

2 min read

Yuhe He

Oct 10

Advisory Wording Diffs: The OSINT Signal Hidden in Security Prose

#osint #security #webdev #programming

2 min read

Yuhe He

Oct 10

The Cheapest Intelligence Product I Know Sells to Resellers, Not Analysts

#osint #datascience #productivity #webdev

2 min read

Yuhe He

Oct 10

Telegram Channels as Market Data: Price Series for Goods That Have No Price Feed

#osint #datascience #analytics #security

2 min read

Yuhe He

Oct 10

Secret Scanning Production Notes: Triage, Liveness, and Reports That Get Paid

#osint #security #webdev #datascience

2 min read

Yuhe He

Oct 10

Secret Scanning on Public Code: The Pattern Layers That Kill the Noise

#security #osint #webdev #datascience

2 min read

Yuhe He

Oct 10

Polling 200 Public Telegram Channels Unattended: A Cadence Design That Survives

#osint #telegram #webdev #datascience

2 min read

Yuhe He

Oct 10

Five Ways to Mine Language Itself as an OSINT Signal in Public Telegram Channels

#osint #telegram #datascience #security

2 min read

Yuhe He

Oct 10

The Wording-Diff Alert: Alerting on Sentences That Changed, Not Documents That Arrived

#osint #security #datascience #webdev

2 min read

Yuhe He

Oct 10

Treat a Twitter Account as a Time Series, Not a Profile Card

#osint #security #datascience #webdev

2 min read

Yuhe He

Oct 10

A Free Public-Web Layer for Breach Monitoring (Watchlist, Not Dump Downloading)

#osint #security #datascience #webdev

2 min read

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