
LangChain v0.3 Tutorial & Migration Guide for 2026
Learn what’s new in LangChain v0.3 and how to migrate: Runnables, new agents, tools, middleware, MCP, and testing patterns for modern AI agents in Python.
Get the simple, two-in-one API for real-time search and deep crawling. We deliver structured data from any site with a strict zero-data-retention policy.









© 2026 Crawleo LLC. All rights reserved.
Enhance your apps with industry leading web scraping and crawling capabilities.
Full‑page extraction across discovered links, built for modern JavaScript‑heavy and protected pages, with results returned as structured outputs for downstream workflows.
Deliver cleaned HTML, plain text, and Markdown in JSON for LLM and MCP pipelines, ready for RAG and automation workflows.
Power your AI assistants with real-time, accurate web content. Eliminate hallucinations by grounding responses in live data.
Learn moreBuilt from the ground up to outperform traditional scrapers.
Live web data delivered in seconds with 99.99% uptime and global coverage for consistent, dependable performance.
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Search like a real user with full control over country, language, server location, and device type — ensuring results match what real citizens see online.
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Bypass anti-bot systems and extract structured data effortlessly — no CAPTCHAs, no blockers, just clean, ready-to-use results.
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Receive structured JSON, clean HTML, plain text, or Markdown — optimized for RAG, LLM, and automation workflows.
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Zero data retention — every query is processed in real time and securely purged immediately after completion.
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Crawleo delivers enterprise-grade crawling at up to 10× lower cost than Tavily — without sacrificing quality or reliability.
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Native connectors for n8n, Make, and Zapier — enabling instant workflow automation without a single line of code.
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Introducing the Model Context Protocol (MCP) — unlocking seamless third-party integrations and future-ready connectivity with Crawleo.
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Real-time web search with geo, language & device targeting. Native MCP for Claude, Cursor & Copilot. Up to 7x cheaper than alternatives — with zero data retention on every plan.
| Feature | Crawleo | Firecrawl | Tavily | SerpAPI | Exa | Perplexity |
|---|---|---|---|---|---|---|
| Free tier | 500 credits/mo | 500 credits (one-time) | 1,000 credits/mo | 250 searches/mo | $10 free credits | Unlimited basic searches |
| Cost per 10K searches | $20 | $83 | $80 (PAYG) | $150 | Not public | $50–120 |
| Cost per 100K searches | $100 | $332 | $500 | $725 | Not public | $500 (Search API) |
| Search + Crawl in one API | ||||||
| Native MCP support | ||||||
| Geo targeting | Country boost | Limited | ||||
| Language targeting | ||||||
| Device targeting | Desktop, Mobile, Tablet | Mobile only | Desktop, Mobile, Tablet | |||
| Output formats | Markdown, HTML, Enhanced HTML | Markdown, JSON, HTML, Screenshots | Markdown, Text, AI Answers | JSON SERP | Markdown (default), HTML, Highlights | Summarized answers |
| Zero data retention | All plans (default) | Enterprise only | Claimed (ToS allows use) | Enterprise (ZeroTrace) | Enterprise only | No |
| LangChain integration | ||||||
| Max concurrent requests | 100 | 100+ | 1,000 RPM | Plan-based | Not public | Not public |
Connects Crawleo directly to your favorite AI editors and agents.
New MCP Integration
Crawleo enables Claude, Cursor, and other AI assistants to search the web and scrape data autonomously through the standard MCP protocol. No complex integrations needed.
Add this to your config
{"mcpServers": {"crawleo": {"url": "https://api.crawleo.dev/mcp","headers": {"Authorization": "Bearer YOUR_API_KEY_HERE"}}}}
Bridge the gap between AI systems and real-time web data with our enterprise-grade endpoints.
Enterprise-grade crawling at a fraction of the cost without sacrificing quality or reliability.
Zero data persistence. Queries vanish after fulfillment—no logs, no leaks, complete GDPR compliance.
Cleaned HTML and smart Markdown reduce token use dramatically, saving real money on every LLM call.
Seamlessly integrates with your favorite tools and workflows.
Up to 10x cheaper than competitors with our Mega plan
Real-time results, rich data structure, optimized for AI workflows
Zero database storage ensures complete user data privacy
API customization options and robust support
Our Web Intelligence API transforms any AI system with real-time data from across the internet, delivering structured, privacy-focused intelligence that makes your applications smarter, more current, and more capable.
Choose the perfect plan for your project. From hobby to enterprise, we've got you covered with usage-based flexibility.
No credit card required
No credit card required
Email Support
Zero Data Retention
Side projects & MVPs
Billed $200/year🎉 2 months on us!
Email Support
Zero Data Retention
Best For Production
Billed $1000/year🎉 2 months on us!
Email + Dedicated Support
Zero Data Retention
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Start building with Crawleo today — your next project deserves real-time web data.
Start getting web data for free and scale seamlessly as your project grows. No credit card needed.
500 free credits · No credit card required · Zero data retention
Everything you need to know about Crawleo.
Crawleo is an all-in-one web intelligence API that provides real-time search and deep crawling capabilities. It delivers structured, AI-ready data from any website — cleaned HTML, Markdown, or JSON — through a simple REST API and native MCP integration.
Crawleo combines search and crawling in a single API at up to 7× lower cost than competitors. Every plan includes zero data retention, device targeting (desktop, mobile, tablet), geo/language customization, and native MCP support for Claude, Cursor, and GitHub Copilot — features others restrict to enterprise tiers.
You can search the web in real-time, crawl and scrape any website, extract structured data, and feed it directly into your AI models. The API returns cleaned Markdown and structured JSON, reducing token usage by ~70%. It integrates with any LLM, AI agent framework, or coding assistant via REST or MCP.
No. Crawleo handles proxy rotation, CAPTCHA solving, anti-bot bypassing, rate limiting, and JavaScript rendering automatically. You just call the API and get clean data back — no infrastructure to manage.
Yes. Every new account gets 500 free credits per month — no credit card required. That's enough to build and test your integration. You can upgrade anytime as your usage grows.
Each API call consumes a certain number of credits depending on the operation (search, crawl, or extract). Credits reset monthly on paid plans. Unused credits don't roll over, but you can purchase additional credit packs if you need more. Check our pricing page for full details.
Zero data retention on every plan — not just enterprise. Your queries and results are processed in real-time and never stored on our servers. We don't log your requests, build profiles, or sell any data. This is a core design principle, not an upsell feature.
Add a simple JSON config to your AI editor (Claude Desktop, Cursor, GitHub Copilot, or any MCP-compatible tool) with your API key and our MCP endpoint URL. Your AI agent can then search the web, crawl pages, and extract data through natural language. Setup takes under a minute — see our MCP section for copy-paste configs.
Still have questions? Get in touch
Explore tutorials, guides, and updates from the Crawleo team.

Learn what’s new in LangChain v0.3 and how to migrate: Runnables, new agents, tools, middleware, MCP, and testing patterns for modern AI agents in Python.

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