Low confidence — this score is based on limited public data (mostly aggregate ratings, with little independent discussion or review detail), so it may not reflect real-world quality.
What it is
Overview
A web scraper that turns websites into markdown or JSON for feeding into AI models and RAG systems. spider.cloud is a non-AI infrastructure tool — it crawls, cleans, and formats web data but doesn't generate or reason. The recurring user is the AI engineer building a knowledge base or the data engineer maintaining a scraping pipeline at scale. The custom browser engine and 215M+ proxy network both run on a single API key, which is what early adopters most often name as the reason for choosing this over self-hosted scrapers.
At a glance
Usability & Quality overview
Best for
- RAG pipelines
- AI agents
- web crawling and scraping
Watch out for
- Evidence here is thin on independent real-user experience
- Usage-based pricing and concurrency modeling may need care
Real product, not a wrapperIndependent product
Spider built its own browser engine and proxy network (215M+ IPs) specifically for AI data collection — this isn't a wrapper around existing crawlers. It automates the full workflow from raw HTML to LLM-ready markdown/JSON without requiring you to prompt each step. The VS Code extension and API let you integrate it directly into your dev environment.
Strong evidenceQuality score
spider.cloud AI web crawler API for RAG and agents, with browser rendering and markdown/JSON output.
This score is our editorial judgment, computed automatically from the sources, weights, and dates shown above. It reflects the data we could verify as of November 12, 2026, not a guarantee or statement of fact about spider.cloud. Third-party ratings and quotes belong to their original platforms and authors. Thin data lowers our confidence label, and we say so instead of guessing. Work on spider.cloud? Dispute any datapoint and we will review it, publish your response, and correct verified errors.
Plans
Pricing
How free is free?
Free with limits
2,500 credits ($0.25 worth) for new accounts; pay-as-you-go or $40/mo unlimited after
What you get for free
- 2,500 free credits (worth $0.25) for new accounts
- Access to full scraping features (markdown/JSON, JS rendering, proxies)
- Usage-based: $1/GB + $0.0001 per CPU minute after credits exhausted
Behind the paywall
- Unlimited requestsUnlimited ($40/mo)
- Higher concurrent requests (25 vs 2)Unlimited 25 concurrent ($350/mo)
- Bonus credits (+5% on $2K+ purchases)Pay As You Go $2K+
Community feedback
Aggregated reviews
Ratings and quoted comments below are aggregated from third-party sources and reflect those users' views, not SearchTools.ai's.
Capabilities
Key features
Web Scraping
Extracts structured data from websites and collects it for your use
Developer Tools
Provides utilities that help programmers build, test, and ship software faster
The honest take
What users love & flag
Distinct themes surfaced across 19 reviews from 1 source — each grounded in real review text, ranked by how often it comes up.
Questions
Frequently asked
What is Spider?
Spider is a web scraping infrastructure tool that converts websites into clean markdown or JSON formats specifically designed for AI agents and RAG pipelines. It combines crawling, JavaScript rendering, and a 215 million proxy network under a single API key, allowing developers to extract structured web data at scale without dealing with blocks or incomplete page loads.
How does Spider handle JavaScript-heavy websites?
Spider runs its own custom browser engine that fully executes JavaScript, loads lazy images, handles infinite scroll, and processes pages exactly as a human user would see them. This browser component is built in-house rather than relying on third-party headless browsers, enabling it to handle geo-restricted content and protected pages that load differently based on location.
What formats does Spider output data in?
Spider returns scraped content as either markdown or JSON. The markdown conversion is optimized for AI use cases by removing navigation elements, advertisements, and footers while preserving document structure, making it suitable for training models and RAG pipelines.
How does Spider's streaming feature work?
Spider streams crawl results in real-time as JSONL, with each page arriving the moment it completes processing rather than waiting for all URLs to finish. Results maintain crawl order, which reduces latency for time-sensitive applications and allows you to start processing data immediately.
Is Spider free?
Spider offers 2,500 free credits (worth $0.25) for new accounts. After that, it uses a pay-as-you-go model charging $1 per gigabyte of bandwidth plus $0.0001 per CPU minute, or unlimited plans starting at $40/month for 2 concurrent requests and $350/month for 25 concurrent requests.
How does Spider avoid getting blocked by websites?
Spider routes requests through a proxy network of 215 million residential exits across 199 countries, rotating IP addresses per request to avoid blocks. This residential proxy infrastructure allows it to access geo-restricted and protected pages that would typically block datacenter IPs or repeated requests from the same address.
What is the difference between Spider's pay-as-you-go and unlimited plans?
The pay-as-you-go plan charges $1 per GB plus $0.0001 per CPU minute with no monthly commitment, suitable for variable or low-volume usage. The unlimited plans ($40-$350/month) allow unlimited requests but limit concurrent requests in flight, making them cost-effective for high-volume, predictable workloads.
Can Spider crawl entire websites or just individual pages?
Spider can do both through its Scrape API—it can fetch individual pages or crawl entire websites. The system processes over 100,000 pages per second and returns results as they complete, making it suitable for both targeted scraping and large-scale website crawling.
How do I integrate Spider with my AI agent or application?
Spider provides multiple integration options including REST API endpoints, SDKs for multiple programming languages, a CLI tool, and a Model Context Protocol (MCP) server for direct integration with AI assistants like Claude. All services are accessible with a single API key.
What makes Spider different from other web scraping tools?
Spider's unified architecture combines crawling, browser automation, and proxy networking under one API key specifically for AI use cases. Unlike general web scrapers, it's optimized for RAG pipelines and AI agents with features like streaming results in crawl order, AI-ready markdown conversion, and a custom browser engine designed to handle protected and geo-restricted content.
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