What is the key difference between Checker MCP and Shieldapi MCP?

Checker MCP belongs to the Security category with local stdio execution, while Shieldapi MCP belongs to the Security category with local stdio execution.

How do I install Checker MCP or Shieldapi MCP in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Checker MCP and Shieldapi MCP free or paid?

Checker MCP operates under a Free / Open Source model (No auth required). Shieldapi MCP operates under a Freemium model (other).

Which MCP server has more tools and community activity?

Checker MCP lists 3 tools with 2 views and 0 GitHub stars. Shieldapi MCP lists 10 tools with 4 views and 1 GitHub stars.

Can I use both Checker MCP and Shieldapi MCP together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

Side-by-Side Model Context Protocol Comparison

Checker MCP vs Shieldapi MCP

In-depth architectural comparison of the Checker MCP and Shieldapi MCP MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

At a Glance & Executive Verdict

Checker MCP

Security · Local stdio

Quality: 52/100 (Good) | Auth: No auth required

Shieldapi MCP

Security · Local stdio

Quality: 56/100 (Good) | Auth: other

Verdict Summary: Choose Checker MCP if you need specialized Security tools running via a local process. Choose Shieldapi MCP if your workspace requires Security integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose Checker MCP when:

You need dedicated capabilities in the Security domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Primary tools included: check_domain, list_checks, explain_check.

Explore Checker MCP Details

Choose Shieldapi MCP when:

You need dedicated capabilities in the Security domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: other (Freemium).
You have access to required keys: SHIELDAPI_URL, SHIELDAPI_WALLET_PRIVATE_KEY.
Primary tools included: check_url, check_password, check_password_range.

Explore Shieldapi MCP Details

Feature & Specification Comparison

Specification	Checker MCP OksigeniaSL Security	Shieldapi MCP alberthild Security
Summary	Domain security & privacy checker: 17 live checks (SPF, DMARC, DKIM, DNSSEC, TLS, CAA, security headers) scored 0-100 with remediation. Local-first, zero telemetry. In the official MCP Registry as com.oksigenia/checker-mcp; npm @oksigenia/checker-mcp.	Security intelligence for AI agents: password breach checks (900M+ HIBP hashes), email/domain/IP/URL reputation, prompt injection detection (200+ patterns), and skill supply chain scanning. Pay-per-request via x402 USDC micropayments or free demo mode, no API key needed.
Category & Scope

Tools & Capabilities Breakdown

Checker MCP Tools (3)

check_domain

Scan a domain or URL and return a scored report from real live checks.

list_checks

List every check grouped by category, with the reason each one matters.

explain_check

Explain a single check by id, why it matters, and how to remediate a failure.

Shieldapi MCP Tools (10)

check_url

Check a URL for malware, phishing, and other threats. Uses URLhaus + heuristic analysis.

check_password

Check if a password hash (SHA-1) has been exposed in known data breaches via HIBP.

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

Checker MCP Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "oksigeniasl-checker-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@oksigenia/checker-mcp"
      ]
    }
  }
}

Shieldapi MCP Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "alberthild-shieldapi-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "shieldapi-mcp"
      ],
      "env": {
        "SHIELDAPI_URL": "YOUR_SHIELDAPI_URL_HERE",
        "SHIELDAPI_WALLET_PRIVATE_KEY": "YOUR_SHIELDAPI_WALLET_PRIVATE_KEY_HERE"
      }
    }
  }
}

Frequently Asked Questions

Checker MCP is categorized under Security and uses a local stdio subprocess. In contrast, Shieldapi MCP belongs to Security using local stdio subprocess. Select Checker MCP when you need capabilities focused on security and Shieldapi MCP when you require tools for security.

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