Your users want web data.
You don't want to build a crawler.
Building reliable web crawling is a full-time infrastructure problem: proxies, browser farms, bot detection, rate limits, and a thousand edge cases per site. Spider handles all of it behind a single API so your engineering team stays focused on what makes your product different.
Skip the infrastructure tax
Every AI platform that needs web data eventually builds a crawler. Then rebuilds it when sites update their bot detection. Then again when a new protection layer appears. Spider has solved these problems across billions of pages so you don't have to solve them once.
Proxy management
Residential and datacenter proxies across 199+ countries. Automatic rotation and
geo-targeting via the country_code parameter. See the
full locations list
.
Bot detection bypass
Advanced fingerprinting and automatic challenge solving. High success rates on protected sites. Try any URL in the playground to test against your target domains.
Browser farms
Full browser rendering at scale. JavaScript rendering, SPA support, and dynamic content extraction handled automatically.
Output normalization
Clean markdown, plain text, or raw HTML via
return_format
. Consistent output regardless of how the source site is built.
Built for platform teams
REST API with streaming
Simple REST endpoints with optional streaming for large crawls. Python, Node, Rust, and Go client libraries ready to drop into your backend.
Event-driven delivery
Receive results via inline webhooks with events like
on_find
(page content) and on_website_status (crawl lifecycle).
No polling, no long-lived connections. See
webhook docs
.
Structured data extraction
Use css_extraction_map for CSS/XPath selectors, or set
extra_ai_data: true
with a custom_prompt for AI-powered extraction. Returns
structured data without post-processing.
High-throughput crawling
Designed for concurrent workloads with intelligent scheduling. Throughput scales with your plan. Your users hit your API, you hit ours, and we handle the concurrency.
Process thousands of URLs at once
Submit URL lists for batch processing. Results delivered incrementally via streaming or as a complete set via webhook.
Pay-as-you-go pricing
Credits based on data transferred, not per-page surcharges. No extra charges for JavaScript rendering or proxy usage. AI extraction incurs additional compute costs. See pricing for details.