Cisa Kev vs Purify Security Feeds

In-depth architectural comparison of the Cisa Kev and Purify Security Feeds 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.

Which MCP Server Should You Choose?

C

Choose Cisa Kev when:

• You need dedicated capabilities in the Security domain.
• You prefer remote streaming HTTP/SSE transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Cisa Kev Details

Choose Purify Security Feeds 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).

Explore Purify Security Feeds Details

Feature & Specification Comparison

Specification	C Cisa Kev Security	Purify Security Feeds Security
Summary	CISA Known Exploited Vulnerabilities catalog	Query CISA KEV / EPSS vulnerability feeds with full per-record provenance and auditable versions
Category & Scope	Security	Security
Quality signal

Tools & Capabilities Breakdown

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).

{
  "mcpServers": {
    "cisa-kev": {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
    }
  }
}

{
  "mcpServers": {
    "purify-security-feeds": {
      "command": "npx",
      "args": [
        "-y",
        "purify-security-feeds"
      ]
    }
  }
}

Related MCP Server Comparisons