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🔥 apify / crawlee - Crawlee—A web scraping and browser automation library for No

GitHub热门项目 | Crawlee—A web scraping and browser automation library for Node.js to build reliable crawlers. In JavaScript and TypeScript. Extract data for AI, LLMs, RAG, or GPTs. Download HTML, PDF, JPG, PNG, and other files from websites. Works with Puppeteer, Playwright, Cheerio, JSDOM, and raw HTTP. Both headful and headless mode. With proxy rotation. | Stars: 24,963 | 69 stars today | 语言: TypeScript

2026-07-24 原文 →
AI 资讯

I benchmarked Claude Code skills against a placebo — and half of mine failed

There's a whole ecosystem of "agent skills" now — reusable instruction files you drop into Claude Code (or Cursor, or Copilot) to make the model write cleaner code, debug more carefully, use fewer tokens, and so on. Some of these repos have tens of thousands of GitHub stars. Almost none of them ship a single number telling you whether the skill actually does anything. That bothered me, because "adding a plausible-sounding instruction" and "adding an instruction that works" look identical until you measure them. So I built a benchmark with one rule, committed before I ran anything: No skill gets merged unless it beats both a no-instruction baseline AND a placebo prompt on its pre-registered target metric, measured on hidden hold-out tests, with accuracy not allowed to drop. Skills that fail are published anyway, with their numbers. The placebo arm is the part almost nobody runs, and it turned out to be the most important one. Why a placebo Most "battle-tested" skill collections that measure anything at all compare skill-on vs skill-off. The problem: that comparison can't separate "this skill works" from "adding any confident-sounding text changes the model's behavior." LLMs are suggestible. If you want to claim your skill did something, you have to show it beats a same-length instruction that contains no actual mechanism — just vibes. So every result here is a three-way comparison — off / placebo / on — run K=5–8 times per task per arm, in isolated git workspaces, graded by hold-out acceptance tests the agent never sees, with every raw run log committed to the repo and the README regenerated from those logs in CI. 516 runs total, all on claude-opus-4-8 . Finding 1: the placebo often made code bigger My anti-over-engineering skill ( underkill , ~20 lines) cut source LOC by -23.8% vs baseline at identical accuracy (60/60 hold-out passes). Good. But the interesting column is the placebo: a same-length "write clean, minimal, professional code" instruction didn't reduce c

2026-07-24 原文 →
AI 资讯

6 Open Source Tools That Give You the Web Back

Hello, I'm Maneshwar. I'm building git-lrc, a Micro AI code reviewer that runs on every commit. It is free and source-available on Github. Star git-lrc to help devs discover the project. Do give it a try and share your feedback. You've probably noticed this if you've tried to fetch a public webpage in the last two years. You write four lines of Python. You get a 403. You add a User-Agent header. You get a 403 with better manners. You spin up headless Chrome and get a challenge page that spins forever. Eventually you go looking at pricing pages for data APIs, where a cheerful landing page offers to sell you back the exact same public HTML for $100 a month. Meanwhile the big labs vacuumed up that same web at a scale none of us will ever match, and now the standard way to read a page programmatically is to pay somebody. The web went from "open by default" to "open, but only if you look like a person holding a mouse." So let's talk about eight open source projects quietly clawing that access back. I've used most of these in anger. Some are brilliant. Quick note on star counts: I mention a few, because they are a decent signal of "somebody else has hit the bugs before you." They are not a signal of maintenance. A repo can have 70k stars and a last commit from 2023. Always check the commit graph before you check the star count. 1. Firecrawl: the one that turned a URL into a prompt What it does: you hand it a URL, it hands you clean markdown. Not HTML with the nav bar and the cookie banner and four newsletter modals. Markdown. Headings, paragraphs, links, done. It also does more than single pages. The crawl endpoint walks a whole site, map gives you a URL inventory without fetching everything, and structured extraction pulls typed JSON out of a page if you describe the shape you want. from firecrawl import Firecrawl app = Firecrawl ( api_key = " fc-... " ) doc = app . scrape ( " https://example.com/docs/getting-started " , formats = [ " markdown " ]) print ( doc . markdown

2026-07-24 原文 →