What is crw?
crw is a MCP server by us that self-hostable web crawler and search API (fastCRW): scraping, crawling, site mapping and SearXNG-backed search. It is listed under Browser & web and has 1,149 GitHub stars.
| Type | Mcp server |
|---|---|
| Author | us |
| Repository | us/crw |
| Popularity | 1,149 GitHub stars |
| Category | Browser & web |
| Security | Low risk (88/100) |
| Rank | #167 of 4,418 MCP servers; #18 in Browser & web |
| License | AGPL-3.0 |
| Last commit | 2026-10-17 |
| Stars this week | +30 |
| Runs | Locally and in the cloud |
| Language | Rust |
| Platforms | macOS, Windows, Linux |
Is crw safe to install?
crw scores 88/100 on the MCPMods security check: Low risk. Things to review: sends your data to a cloud service. It passed 5 of 6 checks.
MCP server results come from listing signals: who publishes it, where your data goes and what it can do. The code itself is not scanned yet.
| Check | Result |
|---|---|
| Published by the service itself | Pass |
| Sends your data to a cloud service | Review |
| No credentials mentioned | Pass |
| Read-only by description | Pass |
| No code execution | Pass |
| Source on GitHub | Pass |
How do I install crw?
- Find the launch command. The README says how the server starts (npx, uvx, docker or a remote URL) and which API keys it needs.
https://github.com/us/crw
- Add it to Claude Code. Replace the part after -- with the command from the README. Remote servers use --transport http with a URL.
claude mcp add crw -- <command from README> claude mcp add --transport http crw <server-url>
- Check it connected. This lists your MCP servers and their status.
claude mcp list
Or ask Claude to set it up
Paste this into Claude Code and it installs crw for you:
Add the "crw" MCP server from https://github.com/us/crw to Claude Code. Read its README for the launch command and any API keys I need, run claude mcp add, then check that it connects.