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Field notes from the world of data extraction.

Articles, interviews and analysis on how data is gathered, used and fought over — written by the people closest to it.

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One Scrapy Spider, Three Browser Setups: Playwright, Patchright, and Zyte
Article

One Scrapy Spider, Three Browser Setups: Playwright, Patchright, and Zyte

One Scrapy spider, three browser setups: stock Playwright, Patchright via the new PLAYWRIGHT_BROWSER_PROVIDER hook, and a remote browser on Zyte over CDP. Same spider and selectors throughout, only the browser changes.

John RooneyHow To
scrapy-jev
Article

Stopping a crawl when the data stops looking real with Jev

A Scrapy pipeline that asks a fast, calibrated AI model whether each scraped field still looks real, and stops the crawl when too many don't. What it caught, what it misses, and whether building it was worth it.

John RooneyData quality
Jev, the model that cannot write a word, and where it fits in web scraping(does it?)
Article

Jev, the model that cannot write a word, and where it fits in web scraping(does it?)

Jev by TypeFace AI cannot generate a string, so it cannot extract a field. What it is, how it differs from an LLM, and the one job it earns in a scraping pipeline.

Ayan Pahwa
A spyglass reveals a robot secretly using a web browser with its hand on the mouse.
Article

Inside antibot, the arms race you can't see

Only 18.5% of top sites run dedicated antibot, but every one of them chose to. Why it's the most intentional barrier in the stack, and the strongest signal of a hardened site.

Robert AndrewsAccess handling
uv-cheat-sheet
Article

uv Python cheatsheet: what changed in 0.12 and what still trips you up

uv 0.12 changed several defaults that Python developers rely on—from how `uv init` structures projects to how hash checking and lockfiles behave. This practical cheatsheet tests the differences across versions and highlights the command-line traps most likely to surprise you.

Ayan PahwaTool-assisted coding
A firewall surrounds a server computer
Article

Firewalls run the web, just not on purpose

Web Application Firewalls run on 92.4% of the top websites, but most arrived bundled with a CDN and were never tuned to resist automated access.

Robert AndrewsAccess handling
prompt-to-action-zyte-cdp
Article

Give your AI agent a browser: search, compare, and check product availability with Zyte CDP

What if your AI agent could use a real browser to search, click, compare products, and collect data, without you writing a selector for every step? By connecting it to a remote Zyte CDP browser, you can turn plain-language instructions into practical browser automation.

John RooneyAI
meetup-blog
Article

The page your agent scrapes is now an attack surface. Is it ready for the hostile web?

Real web is becoming hostile for AI Agents. The page your agent scrapes now could be a potential attack surface. Read more and join Zyte's virtual meet-up to see it in action.

Ayan Pahwa
playwright-zyte-cdp
Article

Running Playwright at scale: connecting to the Zyte CDP browser

We've released our CDP Browser, ideal for those with existing Playwright scripts looking for better access, as well as developers who need granular control over a browser, but don't want the hassle of running locally.

John RooneyHow To
A toy robot walking toward a blocking robots.txt file
Article

Four in 10 sites block AI bots with robots.txt

Nearly four in 10 of the world's top sites are now closed to well-behaved AI crawlers. Here's what operators actually do with robots.txt, and which AI agents they block or welcome.

Robert AndrewsData gathering for AI
fable cover
Article

Fable 5.1 shipped, and GLM-5.3-Flash turned out to be someone I already met

A personal take on Claude Fable 5.1 and GLM-5.3-Flash: real benchmarks, a live extraction test, and the model I guessed before Zhipu confirmed it.

Ayan Pahwa
zytexmarimo-cover
Article

Web data in a reactive notebook: an introduction to marimo

marimo is a reactive Python notebook that reruns only affected cells. Learn to scrape web data with Zyte API, chart prices, and cache costly API calls.

Ayan Pahwa

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