Web data API · Built for agents

Clean web data for AI agents.

One API for crawling, scraping, search, and a real browser. Built for agents that need fresh web data at runtime.

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Endpoint

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200 OK·https://example.com204ms·1.2 KB·sample

# Example Domain

This domain is for use in illustrative examples in documents.
You may use this domain in literature without prior coordination
or asking for permission.

[More information…](https://www.iana.org/domains/example)

Sample for scrape·Run live to stream the real one

POST·api.spider.cloud/scrapeGet a free API key

Browser Use stealth benchmark · 80 anti-bot sites

85% pass rate. Highest in the field.

Cloudflare, Akamai, PerimeterX, DataDome. Spider Browser scored highest overall and led in four of six anti-bot categories.

Spider85%

Kernel68%

Browserbase41%

100%: 999-URL pass 254 domains, 18 categories
2.5s: Median e2e connect → render → close
705ms: Session create no cold start

Read the full benchmark

Native integrations with the leading AI frameworks

Community

Teams shipping with Spider.

What engineers said on X, Medium, and Dify.

GitHub discussions Discord chat

@iammerrick

Rust based crawler Spider is next level for crawling & scraping sites. So fast. Their cloud offering is also so easy to use. Good stuff. https://github.com/spider-rs/spider

@WilliamEspegren

Web crawler built in rust, currently the nr1 performance in the world with crazy resource management Aaaaaaand they have a cloud offer, that's wayyyy cheaper than any competitor Name a reason for me to use anything else? github.com/spider-rs/spid…

@gasa

@spider_rs is the best crawling tool i have used. I had a complicated project where i needed to paste url and get the website whole website data. Spider does it in an instant

@Ashpreet Bedi

@spider_rs is THE best crawler out there, give it a try

@Troyusrex

I found a new tool, Spider-rs, which scrapes significantly faster and handles more scenarios than the basic scraper I built did. Our use of Spider-rs and AWS infrastructure reduced the scraping time from four months to under a week.

@Dify.AI

Spider @spider_rust can be used as a built-in tool in #Dify Workflow or as an LLM-callable tool in Agent. It allows fast and affordable web scraping and crawling when your AI applications need real-time web data for context.

Why Spider

Built for the live web.

Rust core, open-source under MIT, and the same engine in every request.

100K+ pages per second

Written in Rust with async concurrency from the ground up. The same open-source engine powers every request.

Open source core

The crawler powering this API is on GitHub with 2K+ stars. Audit the code, self-host, or use the managed cloud. No lock-in.

AI-native output

Clean markdown, structured JSON, or screenshots, straight from the rendered DOM. No HTML cleanup, no wasted LLM tokens on navigation chrome.

Bot detection, handled

Stealth headers, residential proxies, and fingerprint rotation on by default. Tune per request when a target demands more.

FAQ

Common questions.

Billing, rate limits, and crawl failures.

What is Spider?

Spider is a fast web scraping and crawling API designed for AI agents, RAG pipelines, and LLMs. It supports structured data extraction and multiple output formats including markdown, HTML, JSON, and plain text.

How can I try Spider?

What formats can Spider convert web data into?

Spider outputs HTML, raw, text, and various markdown formats. It supports JSON, JSONL, CSV, and XML for API responses.

Can you crawl all pages?

Yes. Spider crawls all necessary content without needing a sitemap. We rate-limit individual URLs per minute to balance the load on a target server.

Does it respect robots.txt?

Yes. robots.txt compliance is on by default. You can disable it on a per-request basis when needed.

What if a crawl fails?

Failed requests are billed at $0. You only pay for responses that return data.

What if I get blocked?

Spider includes an Unblocker with stealth, rotating proxies, and automatic retries. Heavily protected sites route to the Browser Cloud, which runs full browser sessions with anti-detection built in.

How does billing work?

Each request is billed for bandwidth ($1/GB) plus compute ($0.001/min). Most pages cost a fraction of a cent. You can estimate your spend with the pricing calculator at /compare.