Mr Zack

I build pay-per-event Apify Actors that turn fast-moving money boards into clean data: Whop Content Rewards campaigns and Immunefi bug bounties. HTTP-only, no browser, no residential proxies.

Joined on Aug 11, 2026 https://apify.com/tactful_anvil

Mr Zack

Sep 18

Your "only new results" mode has never been tested on the second run

#webscraping #testing #javascript #apify

3 min read

Mr Zack

Sep 17

Your `{}` smoke test passes. Your users still crash.

#webscraping #testing #javascript #apify

3 min read

Mr Zack

Sep 16

The scraper said 'Succeeded'. The column was dead for weeks.

#webscraping #testing #dataengineering #apify

2 min read

Mr Zack

Sep 13

Google News RSS quietly supports after:, before:, site: and -word — I measured what each one actually does

#news #webscraping #api #datascience

3 min read

Mr Zack

Sep 13

I scraped the top 1,000 Skool communities. 85% are paid, the median charges $34, and 10 communities hold 30% of the money.

#datascience #webscraping #creators #business

2 min read

Mr Zack

Sep 12

LinkedIn's public job search silently ignores "contract", "remote" and "entry level". I measured it, then fixed it.

#webscraping #career #datascience #node

2 min read

Mr Zack

Sep 11

I pulled the payout ledger of 658 clipping campaigns. The median one pays 12% of its advertised CPM.

#webscraping #datascience #sidehustle #creators

2 min read

Mr Zack

Sep 6

I surveyed 8,758 Apify actors before building anything. Then I shipped three scrapers in one day.

#webscraping #datascience #sidehustle #api

3 min read

Mr Zack

Sep 5

211 US class action settlements are open right now, 155 need no receipt. I scrape and score the whole board in one HTTP request.

#webscraping #node #datascience #opensource

3 min read

Mr Zack

Sep 4

Kalshi's API is flooded with 8,000+ zero-volume parlay markets. If your scraper reads /markets, it's been empty since Sept 4.

#webscraping #api #node #datascience

3 min read

Mr Zack

Sep 3

I pulled the open positions of Polymarket's 25 most profitable traders. $7.5M is sitting in just 5 bets.

#webscraping #datascience #crypto #api

3 min read

Mr Zack

Sep 2

I scraped all 545 startups for sale on Microns. Sellers ask 4.3x revenue. Buyers pay 3.3x.

#startup #data #webscraping #indiehackers

3 min read

Mr Zack

Aug 29

Finding risk-free arbitrage between Polymarket and Kalshi (and why most arb finders show you garbage)

#javascript #node #finance #webscraping

2 min read

Mr Zack

Aug 28

Stop Opening Two Ad Libraries Every Morning — One Feed for Google + LinkedIn Ads

2 min read

Mr Zack

Aug 27

Your browser extensions can read every site you visit. Auditing 200 of them takes one scrape

3 min read

Mr Zack

Aug 18

Clippers refresh three reward boards every morning. Here's the data stack that does it for them

#webscraping #datascience #sidehustle #api

3 min read

Mr Zack

Aug 12

Immunefi lists $150M+ in bug bounties. The board doesn't tell you which ones are worth your weekend

#security #web3 #webscraping #datascience

3 min read

Mr Zack

Aug 12

Most "big budget" clipping campaigns never pay. Here's how to spot them from one scrape

#webscraping #automation #datascience

3 min read

DEV Community

Mr Zack

Badges

Writing Debut

Skills/Languages

Available for

Your "only new results" mode has never been tested on the second run

Your `{}` smoke test passes. Your users still crash.

The scraper said 'Succeeded'. The column was dead for weeks.

Google News RSS quietly supports after:, before:, site: and -word — I measured what each one actually does

I scraped the top 1,000 Skool communities. 85% are paid, the median charges $34, and 10 communities hold 30% of the money.

LinkedIn's public job search silently ignores "contract", "remote" and "entry level". I measured it, then fixed it.

I pulled the payout ledger of 658 clipping campaigns. The median one pays 12% of its advertised CPM.

I surveyed 8,758 Apify actors before building anything. Then I shipped three scrapers in one day.

211 US class action settlements are open right now, 155 need no receipt. I scrape and score the whole board in one HTTP request.

Kalshi's API is flooded with 8,000+ zero-volume parlay markets. If your scraper reads /markets, it's been empty since Sept 4.

I pulled the open positions of Polymarket's 25 most profitable traders. $7.5M is sitting in just 5 bets.

I scraped all 545 startups for sale on Microns. Sellers ask 4.3x revenue. Buyers pay 3.3x.

Finding risk-free arbitrage between Polymarket and Kalshi (and why most arb finders show you garbage)

Stop Opening Two Ad Libraries Every Morning — One Feed for Google + LinkedIn Ads

Your browser extensions can read every site you visit. Auditing 200 of them takes one scrape

Clippers refresh three reward boards every morning. Here's the data stack that does it for them

Immunefi lists $150M+ in bug bounties. The board doesn't tell you which ones are worth your weekend

Most "big budget" clipping campaigns never pay. Here's how to spot them from one scrape