crawl4ai-mcp-server
Provides an MCP (Model Context Protocol) server that exposes Crawl4AI web scraping/crawling capabilities (scrape, crawl, URL discovery, search, extract) to MCP clients such as Claude Desktop. It is intended to run as a remote service on Cloudflare Workers and supports OAuth and Bearer-token (API key) authentication.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
Supports OAuth and Bearer tokens per README; however, there is no documented authorization model (scopes/permissions), no documented token handling/rotation, and no explicit security headers/logging guidance shown. Runs on Cloudflare Workers and uses KV, which may store crawl data; data retention/access controls are not described.
⚡ Reliability
Best When
You want an MCP-tooling integration to trigger Crawl4AI workflows from an AI assistant and can tolerate early-stage reliability for development/testing.
Avoid When
You need strict SLA/uptime guarantees, mature error semantics, or you cannot provide OAuth/Bearer authentication configuration.
Use Cases
- • Letting AI assistants scrape or crawl web content via MCP tools
- • Performing structured content extraction from URLs (CSS-selector or LLM-assisted extraction as supported by Crawl4AI)
- • Crawling a site and then searching indexed crawl results
- • Automating research workflows that require multi-page web acquisition
Not For
- • Production use (repo README explicitly states MCP server is under development / not ready for production)
- • Use cases requiring guaranteed scraping correctness/robustness on all sites (no guarantees documented)
- • Environments needing a standard REST/GraphQL/OpenAPI API without MCP
Interface
Authentication
README mentions OAuth and API key/Bearer token options but does not document scopes/authorization granularity or token lifecycle/rotation details.
Pricing
No pricing information provided; deployed on Cloudflare Workers likely implies usage-based infrastructure costs, but not specified.
Agent Metadata
Known Gotchas
- ⚠ Server is explicitly marked as under development / not production ready; tool reliability may be inconsistent.
- ⚠ No documented rate-limit behavior or retry/idempotency semantics for MCP tools in README.
- ⚠ Cloudflare Workers deployment and KV configuration are required for some stateful behaviors (e.g., crawl data), which may impact local testing and agent environments.
Alternatives
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Scores are editorial opinions as of 2026-03-30.