Ferrok vs Snyk Agent Scan: Which MCP Security Scanner Is Right for You?

The MCP security scanner market is getting crowded, and that's a good sign. It means the ecosystem recognizes the problem. But it also means you have choices to make.

There are now two leading platforms scanning MCP configurations for security vulnerabilities: Ferrok and Snyk Agent Scan (acquired from Invariant Labs). Both are solid tools doing similar work, but they approach the problem differently. Different architecture, different philosophy, different integration patterns.

This isn't a trash-talking post. Snyk Agent Scan is legitimate security software. But "legitimate" doesn't mean "the right fit for your workflow." Let me walk you through the differences and help you figure out which one matches your use case.

Quick Overview: What Each Tool Does

Snyk Agent Scan is Snyk's CLI-based scanner, acquired from the Invariant Labs team. It's built to detect 15+ risk categories in MCP configurations, with built-in auto-discovery of configs (it scans your local IDE configs automatically), and it includes tool pinning detection for supply chain risks.

Ferrok is a REST API-first scanner purpose-built for MCP. It scans MCP configurations and returns findings mapped to the OWASP MCP Top 10 framework, with a 0-100 risk score, letter grades, and pass/fail gates for CI/CD integration.

Both solve the same core problem: finding security risks in MCP servers before they hit production. They just solve it in different ways.

Head-to-Head Comparison

Feature	Ferrok	Snyk Agent Scan
Architecture	REST API	CLI tool
Installation	None (API call)	uvx/pip install
Scoring System	0-100 score + letter grade + PASS/FAIL	Findings list with severity
OWASP Mapping	Every finding mapped to OWASP MCP Top 10	Partial OWASP mapping
CI/CD Integration	curl in any pipeline	CLI in pipeline
Auto-Discovery	No (you provide the config)	Yes (scans IDE configs)
Pricing	Free tier (100 scans/month)	Free (open source)
Tool Pinning Detection	No	Yes (rug pull detection)
Broader Platform	Standalone MCP tool	Part of Snyk ecosystem

Architecture: API-First vs CLI-First

This is the biggest difference, and it affects everything downstream.

Ferrok's API-first approach: You make an HTTP request with your MCP config as JSON payload. You get back structured JSON with findings, scores, and remediation steps. No installation required—you can scan from curl, your CI/CD pipeline, or an embedded SDK.

Snyk Agent Scan's CLI approach: You install the tool locally (via uvx or pip), point it at your MCP config files, and it outputs findings to the console or JSON.

If you're embedding scanning into a platform or product, the API model is cleaner. If you're scanning locally and want everything in one binary, the CLI model is simpler.

Scoring and Compliance Reports

Ferrok gives you a single 0-100 risk score plus letter grades (A, B, C, etc.) and pass/fail gates. You can set a CI/CD gate that blocks deployment if the score drops below a threshold. This is ideal for compliance workflows and for teams that need a clear "go/no-go" signal.

Snyk Agent Scan returns a findings list with severity levels for each issue. This is more granular—you see exactly what's wrong—but it requires manual interpretation. You need to decide yourself whether the findings are blocking or not.

For EU AI Act compliance or SOC 2 audits, Ferrok's scoring model is more useful. For security teams that want to manually review every finding, Snyk's findings list is better.

OWASP MCP Mapping

Ferrok maps every finding to the OWASP MCP Top 10, which is rapidly becoming the de facto standard framework for MCP security. This is crucial for compliance documentation. When a regulator or auditor asks, "What risk framework are you using?", you can point to OWASP.

Snyk Agent Scan includes OWASP mapping, but it's partial. Not every finding maps cleanly to OWASP categories. This isn't a fatal flaw—the findings are still valid—but it makes compliance reporting less straightforward.

Auto-Discovery

Snyk Agent Scan has a nice feature: it can automatically scan MCP configs in your local IDE configuration directories. It finds configs you might have forgotten about, which is genuinely useful for desktop developers.

Ferrok doesn't auto-discover. You explicitly send it a config to scan. This is a trade-off: Ferrok requires you to be intentional about what you scan, which can catch fewer vulnerabilities, but it also means you're only scanning configs you control.

For teams with centralized config management, this isn't a problem. For teams with scattered local configs, Snyk's auto-discovery is nice to have.

Tool Pinning and Supply Chain Detection

Snyk Agent Scan can detect if your MCP server command is pinned to a specific version or if it's vulnerable to rug pulls (like npx -y some-mcp-server). This is a valuable supply chain check.

Ferrok doesn't have this feature. If supply chain risk is your primary concern, Snyk is more mature here.

When to Choose Ferrok

• You want to embed scanning in your platform or product. REST APIs are easier to integrate than CLIs.
• You need structured scoring for CI/CD gates. Pass/fail signals are easier to automate than interpreting findings lists.
• You want OWASP-mapped compliance reports. For audits and compliance documentation, Ferrok's mapping is cleaner.
• You're building a scanning layer for multiple MCP deployments. The API model scales better than installing CLI tools across many systems.
• You prefer no installation overhead. curl in a GitHub Action is simpler than installing Python packages.

When to Choose Snyk Agent Scan

• You're already in the Snyk ecosystem. If you use Snyk Code or Snyk Open Source, Agent Scan integrates naturally.
• You want local IDE config auto-discovery. Snyk scans configs on your machine automatically, which catches forgotten configs.
• You need supply chain risk detection. Tool pinning and rug pull detection are more mature in Snyk.
• You prefer CLI workflows. If your team is comfortable with command-line tools, Snyk's UX might feel more natural.
• You want detailed findings lists. Snyk's granular findings are better if you're doing manual security review.

Can You Use Both?

Yes, and it makes sense in some scenarios.

Snyk Agent Scan is great for catching supply chain risks and auto-discovering configs. Ferrok is great for compliance documentation and CI/CD gating. You could run both:

• Use Snyk locally during development to catch supply chain risks and auto-discover configs.
• Use Ferrok in CI/CD to gate deployments with a structured score and compliance report.

They're not competing—they're complementary. Snyk catches the things Ferrok doesn't (supply chain), and Ferrok produces the documentation Snyk doesn't (compliance reports).

The Trade-Off

In the end, this is a philosophy difference:

Snyk: "We'll scan your local configs automatically and give you detailed findings. You interpret what matters."

Ferrok: "You tell us what to scan, and we'll give you a compliance-ready risk score. No interpretation needed."

Snyk is more comprehensive and catches more. Ferrok is more structured and automates more of the decision-making. Choose based on what your team needs.

Make Your Choice

Both tools are solving a real problem in a young market. Neither is obviously wrong. Snyk Agent Scan is the mature choice if you want exhaustive findings. Ferrok is the right choice if you want compliance automation and structured gating.

The good news: the MCP security problem is getting solved. Pick the tool that fits your workflow, and get started securing your MCP deployments today.