The Model Context Protocol ecosystem now has 79,000+ GitHub stars and growing. Between January and March 2026, researchers filed 30+ CVEs targeting MCP servers — from path traversals to CVSS 9.6 RCE flaws.
30 CVEs in 60 days — MCP is the top AI attack vector of 2026
Nine security scanners have emerged to address this. We compared all of them so you do not have to.
The Scanners
1. ClawGuard Shield
Open Source (MIT)API
- Focus: EU AI Act Compliance + Security Scanning
- Patterns: 132 deterministic rules, zero LLM dependency
- Languages: 14 (EN/DE/FR/ES/IT/NL/PL/PT/TR/JA/KO/ZH/AR/HI)
- Speed: Under 10ms per scan
- OWASP Agentic: 70% coverage (7/10)
- Unique: Only scanner with EU AI Act article mapping + compliance reports
- Best for: Teams that need audit trails for regulators or legal departments
- Pricing: Free (OSS) / Pro €99/mo / Enterprise €249/mo
2. Snyk Agent-Scan
Open SourceEnterprise
- Focus: Agent component discovery + MCP security
- Approach: LLM judges + deterministic rules
- Unique: Auto-discovers Claude/Cursor/Windsurf/Gemini agent setups
- Best for: Enterprise DevSec teams already in the Snyk ecosystem
- Stars: 1,900+
3. Invariant MCP-Scan
Open Source
- Focus: Tool Pinning via cryptographic hashing
- Unique: Detects tool definition drift between scans (rug pull prevention)
- Best for: Teams worried about supply chain attacks on MCP tools
- Stars: 1,900+ (Snyk partnership)
4. Cisco MCP Scanner
Open Source
- Focus: Malicious code detection in MCP server implementations
- Unique: Cisco enterprise backing and distribution
- Best for: Organizations with existing Cisco security infrastructure
- Stars: 850+
5. MCPScan.ai
SaaS
- Focus: LLM-based classification of tool definitions
- Unique: Web UI — submit a GitHub URL, get a report. No CLI needed
- Best for: Quick one-off assessments without installation
6. Semgrep MCP
Open Source
- Focus: Static analysis / code vulnerability scanning via MCP integration
- Unique: Leverages Semgrep's extensive rule library for code-level issues
- Best for: Teams using Semgrep for SAST who want MCP integration
7. Proximity
Open Source
- Focus: Tool/prompt/resource discovery and analysis
- Unique: Maps what MCP servers actually expose before you trust them
- Best for: Security auditors doing initial server assessments
8. Enkrypt AI MCP Scan
SaaS
- Focus: AI-powered security assessment
- Best for: Teams wanting fully managed scanning
9. GitHub Secret Scanning
Platform Feature
- Focus: Exposed secrets and credentials in MCP server code
- Unique: Integrated into GitHub CI/CD workflow
- Best for: GitHub-native teams, shift-left prevention
Feature Comparison
| Feature |
ClawGuard |
Snyk |
MCP-Scan |
MCPScan.ai |
Semgrep |
Cisco |
| Open Source |
Yes (MIT) |
Yes |
Yes |
No |
Yes |
Yes |
| Prompt Injection |
30+ rules |
LLM |
Yes |
Yes |
No |
Partial |
| Tool Poisoning |
Yes |
Yes |
Yes |
Yes |
No |
Partial |
| EU AI Act |
Yes |
No |
No |
No |
No |
No |
| Languages |
14 |
1 |
1 |
1 |
1 |
1 |
| OWASP Agentic |
70% |
~40% |
~30% |
~30% |
~20% |
~20% |
| No LLM needed |
Yes |
No |
Partial |
No |
Yes |
Yes |
| API available |
Yes |
No |
No |
Yes |
No |
No |
| Speed |
<10ms |
Seconds |
Seconds |
Seconds |
Seconds |
Seconds |
Which One Should You Use?
Need compliance reports for EU AI Act?
ClawGuard Shield — the only scanner that maps findings to specific EU AI Act articles.
Enterprise DevSec team?
Snyk Agent-Scan — most mature platform, broadest enterprise integration.
Supply chain concerns?
Invariant MCP-Scan — tool pinning with cryptographic hashes is unique.
Quick one-off assessment?
MCPScan.ai — submit a URL, get a report. Zero setup.
Code-level vulnerabilities?
Semgrep MCP — best for SAST integration with MCP tools.
Full compliance + security stack?
Snyk + ClawGuard — security layer + compliance layer. Different buyers, complementary tools.
The Bottom Line
No single tool covers everything. The MCP security landscape is still maturing — 30 CVEs in 60 days proves the attack surface is real and growing. The question is not whether to scan, but which combination fits your risk profile.
If your organization operates under EU AI Act requirements (and starting August 2026, most will), you need compliance documentation alongside security scanning. That is where purpose-built tools come in.
Try ClawGuard Shield Free
Scan your MCP servers against 132 security patterns in 14 languages with EU AI Act compliance mapping.
Start Scanning