Uefn Mcp Server
mcp · by KirChuvakov
MCP server for controlling UEFN (Unreal Editor for Fortnite) from Claude Code — 22 tools for actors, assets, levels, viewport, and Python execution
No known CVEs
MIT license
Maintained
Last commit 100d ago
Works with most clients
Transport: stdio, sse, http
0 tools
Grade F
Step 1
Install in your client
Config is the same across clients — only the file and path differ.
CD
Supported in Claude Desktopstdio, sse, http · Node 18+
Paste into ~/Library/Application Support/Claude/claude_desktop_config.json
{
"mcpServers": {
"uefn": {
"args": [
"C:/path/to/uefn-mcp-server/mcp_server.py"
],
"command": "python"
}
}
}Are you the author?
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What Uefn Mcp Server does
Control UEFN (Unreal Editor for Fortnite) from Claude Code via the Model Context Protocol.
Test This Server
Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.
uvx 'mcp' 2>&1 | head -1 && echo "✓ Server started successfully"
After testing, let us know if it worked:
Scored, not listed
Why this score
Five weighted categories — click any category to see the underlying evidence.
Score breakdown
52/100across 5 weighted dimensions
0255075100
23
14
10
−48
Security
Maintenance
Efficiency
Documentation
Compatibility
Categoriesclick a row to see evidence
Security
OSV.dev3 fixed
CVE-2025-66416info · fixed
Model Context Protocol (MCP) Python SDK does not enable DNS rebinding protection by default
### Description The Model Context Protocol (MCP) Python SDK does not enable DNS rebinding protection by default for HTTP-based servers. When an HTTP-based MCP server is run on localhost without authentication using `FastMCP` with streamable HTTP or SSE transport, and has not configured `TransportSecuritySettings`, a malicious website could exploit DNS rebinding to bypass same-origin policy restrictions and send requests to the local MCP server. This could allow an attacker to invoke tools or ac
CVE-2025-53366info · fixed
MCP Python SDK vulnerability in the FastMCP Server causes validation error, leading to DoS
A validation error in the MCP SDK can cause an unhandled exception when processing malformed requests, resulting in service unavailability (500 errors) until manually restarted. Impact may vary depending on the deployment conditions, and presence of infrastructure-level resilience measures. Thank you to Rich Harang for reporting this issue.
CVE-2025-53365info · fixed
MCP Python SDK has Unhandled Exception in Streamable HTTP Transport, Leading to Denial of Service
If a client deliberately triggers an exception after establishing a streamable HTTP session, this can lead to an uncaught ClosedResourceError on the server side, causing the server to crash and requiring a restart to restore service. Impact may vary depending on the deployment conditions, and presence of infrastructure-level resilience measures. Thank you to Rich Harang for reporting this issue.
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Frequently Asked Questions
- Is Uefn Mcp Server safe to use?
- Uefn Mcp Server has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.
- How do I install Uefn Mcp Server?
- Uefn Mcp Server supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
- What AI clients work with Uefn Mcp Server?
- Uefn Mcp Server is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
- Is Uefn Mcp Server actively maintained?
- Uefn Mcp Server is less actively maintained — last commit was 100 days ago. It has 48 GitHub stars.
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