Free Tool — Up to 20 Checks

Scan your MCP servers
for vulnerabilities.
Free.

The most comprehensive free MCP security scanner. Up to 20 checks across authentication, protocol, vulnerability, and hygiene — mapped to the OWASP MCP Top 10. Only checks that produce definitive results are shown.

12 servers scanned

Running security checks…

No signup required · 3 scans per day per IP

What we check

Up to 20 checks across 4 categories, mapped to the OWASP MCP Security Top 10. Only tests that produce definitive PASS/FAIL results are included in your report.

Authentication & Authorization
1
Authentication required — real MCP initialize probe
2
MCP manifest required fields (auth, scopes, version, contact)
Protocol Security
1
Tool enumeration without auth (tools/list)
2
Tool execution without auth (tools/call)
3
Scope boundary validation — unknown tool rejection
4
TLS configuration — HSTS enforcement
5
Auth token validation — invalid & alg:none JWT rejection
Vulnerability Testing
1
Prompt injection resistance — 3 payload variants
2
SSRF via tool parameters — metadata endpoint probe
3
Input size limits — 100 KB DoS resistance
4
Rate limiting — header check + 5-request burst
5
CORS policy — origin reflection test
6
Output sanitization — XSS prevention in tool responses
7
Error information leakage — stack trace detection
8
Schema validation — type confusion & prototype pollution
9
Security headers — CSP, XFO, XCTO, Referrer-Policy
Hygiene & Hardening
1
Invocation logging — trace header detection
2
Dependency disclosure — Server & X-Powered-By headers
3
Response size limits — context flooding prevention
4
Multi-tool privilege escalation — per-tool auth