GET haskell.org HTTP 200112 ms19.3 KB$0.000107 captured Aug 7, 2026
haskell.org, as data
One API turns any haskell.org page into markdown, structured JSON, its link graph or a screenshot, and crawls the whole site the same way. The panel shows the real response we captured.
- Render mode
- Plain HTTP, no browser needed
- Response
- HTTP 200 in 112 ms
- Page size
- 19.3 KB of markdown, 408 lines
- Fields
- Business Name, Address, Phone, Category
- Captured
- Aug 7, 2026
Free balance on signup, no card. This haskell.org page cost $0.000107 to fetch.
### Model complex domains### A new paradigmExpress your ideas clearly and learn a new way of thinking about programming. Based on lambda calculus, Haskell is apurely functional programming language that features referential transparency, immutability and lazy evaluation.Concepts that will blow your mind— relearn programming while having an absolute blast.### Composition and predictabilityReason about large pieces of code and compose them easily. There is no global stateor mutable variables obscuring the meaning of your program. The strong type system makes sure there are no surprises— never again will you have to guess what your program does at execution time.### DeclarativeWrite your programs declaratively by utilizing the power of pure functions and algebraic data types.In Haskell we don't write how a program should be executed, we just describe its logic— never again be forced to think about evaluation order or execution details.### PerformanceSqueeze out the last ticks of your multi-core processors, thanks to best-in-class support for async,concurrent and parallel programming... made possible via garbage collection and green threads.Use advanced streaming libraries for ultra efficient data processing.### AbstractionBuild powerful abstractions that are not possible in other languages. Only your imagination is the limit, due topolymorphism, type classes and more advanced typesystem features.Haskell has its roots in programming language research and will always be at the forefront of expressivity.### Excellent toolingA tooling story that's truly amazing: spawn your toolchain with GHCup, build your project with cabal, get editor integration with haskell-language-server— everything at your fingertips.GHC is the next generation compiler that supports all of your favorite platforms.## Videos##### Escape from the ivory tower: The Haskell journey, by Simon Peyton-JonesWhat Spider does on haskell.org
Same key, five endpoints. The numbers under a cell were measured on this page.
Page to markdown
Clean text for RAG and LLM context, boilerplate removed. The lane that runs without a key.
112 ms · $0.000107Page to JSON
Spider reads the page and names the fields. Pass your own schema when you need exact keys.
Rendered capture
Real Chromium, full-page PNG. The same call also returns the rendered HTML.
The call behind the panel
This request produced the response above. Paste it with your key and you get the same bytes.
curl -X POST https://api.spider.cloud/scrape \
-H "Authorization: Bearer $SPIDER_API_KEY" \
-H "Content-Type: application/json" \
-d '{"url": "https://haskell.org/", "return_format": "markdown"}'from spider import Spider
app = Spider()
params = {"return_format": "markdown"}
page = app.scrape_url("https://haskell.org/", params=params)
print(page[0]["content"])import { Spider } from "@spider-cloud/spider-client";
const app = new Spider();
const [page] = await app.scrapeUrl("https://haskell.org/", {
return_format: "markdown",
});
console.log(page.content);What haskell.org costs
Multiplied from the measured 19.3 KB page. Estimates round to the cent.
1 GB of transfer costs $1, plus $0.001 per CPU minute, and failed requests cost $0. Crawling daily? The Unlimited plan is a flat monthly rate.
Point this at the rest of haskell.org.
The capture above took 112 ms and cost $0.000107. The same call takes any URL on haskell.org.