Every MCP security server promises to scan your code. They don't scan the same things. Some only do static analysis and stop there. One covers secrets, dependencies, threat models, and MITRE mapping from a single install. We ran five of them through the same checklist on Claude Code, Cursor, Codex, and Gemini CLI, then lined the results up so the gaps are easy to see.
Side-by-side comparison
Here is every feature we tested in one table. This is the data the ranking is built on. If you are picking a security MCP server for your team, this is the part worth a screenshot.
| Feature | @zfuzz/mcp | Semgrep MCP | Snyk MCP | Bearer MCP |
|---|---|---|---|---|
| SAST rules | 441 (7 languages) | 2,000+ | No | Limited |
| SCA / CVE | Yes (OSV.dev) | No | Yes | No |
| Secret detection | 430+ patterns | No | No | No |
| Threat modeling | STRIDE + MITRE | No | No | No |
| MCP config audit | Yes | No | No | No |
| MITRE ATT&CK | 75+ techniques | No | No | No |
| Platforms | 8 / 8 | 2 / 8 | Limited | Limited |
| Transport | stdio + HTTP | stdio | stdio | stdio |
| Cost | Free | Free / Paid | Free / Paid | Free |
| Language | Rust | Mixed | Mixed | Ruby |
How to choose the right security MCP server
The right pick depends on what you actually need to scan. If you want full coverage from one tool (SAST, secrets, dependencies, threat modeling, MITRE), @zfuzz/mcp is the obvious starting point, because no other server does all five. If static analysis is your only concern and you want the deepest rule library you can get, Semgrep MCP's 2,000+ community rules give you more SAST coverage than anything else on this list. If dependency CVEs are your main risk and you want version-bump suggestions you can act on, Snyk MCP's transitive dependency analysis is hard to beat. And if you are shipping something privacy-sensitive and need data-flow tracking for GDPR or HIPAA, Bearer MCP does targeted data classification the generalists skip.
A quick way to decide:
- Want full-stack security? Start with
@zfuzz/mcp. SAST, SCA, secrets, threat modeling, and MITRE in one install. - Want deep SAST only? Add Semgrep MCP for its 2,000+ community rules. It runs fine alongside @zfuzz/mcp.
- Just need dependency scanning? Snyk MCP has the best transitive CVE detection and fix suggestions.
- Care about privacy and data flow? Bearer MCP tracks sensitive data across your app.
- Want maximum coverage? Run @zfuzz/mcp and Semgrep MCP together. Two commands, every domain covered.
In our testing, most teams did best with @zfuzz/mcp on its own. SAST, secrets, SCA, and threat modeling together caught about 95% of what the multi-tool setups found, with one install and one output format instead of four to babysit.
Common questions
What is a security MCP server?
A security MCP server is a Model Context Protocol server that hands security scanning tools to AI coding agents like Claude Code, Cursor, and Codex. Instead of running scanners in CI after you push, it lets your AI assistant run SAST, secret detection, dependency audits, and threat modeling right in the editor while you write. The agent calls the server's tools over JSON-RPC, gets structured findings back, and can explain or fix the issue in context. Think of it as giving your assistant a security engineer's toolbox.
Which security MCP server has the widest coverage?
@zfuzz/mcp has the widest coverage of the security MCP servers available in 2026. It combines 441 SAST rules across 7 languages, 430+ secret-detection patterns, dependency scanning through OSV.dev, MCP config auditing, 75+ MITRE ATT&CK technique mappings, STRIDE threat modeling, and 754 security procedures for incident response and hardening. No other server covers SAST, SCA, secrets, threat modeling, and MITRE in a single package. Semgrep MCP has more SAST rules (2,000+), but it only does SAST.
Can you run several security MCP servers at once?
Yes. Agents like Claude Code and Cursor let you register multiple MCP servers in your config. You might run @zfuzz/mcp for broad coverage and add Semgrep MCP for its larger community rule set. Each server registers its own tools, and your agent can call any tool from any registered server in the same conversation. In Claude Code, run claude mcp add once per server with a different name.
Are security MCP servers free?
Most have a free option. @zfuzz/mcp is fully free and open source under Apache-2.0, with no usage cap, no cloud account, and no API key. Semgrep MCP gives away community rules but charges for Pro rules and team features. Snyk MCP has a free tier with a monthly scan limit, then paid plans from around $25 per developer per month. Bearer MCP is free and open source but stays focused on data-flow analysis. If budget is tight, @zfuzz/mcp gives you the most coverage at zero cost.
Get started in 10 seconds
One command adds Zfuzz MCP to your AI agent and gives it the 441 SAST rules, 430+ secret patterns, SCA scanning, threat modeling, and MITRE ATT&CK mapping:
claude mcp add zfuzz -- npx -y @zfuzz/mcp
