Universalcartmerchantgate MCP vs Kastell

A side-by-side look at the Universalcartmerchantgate MCP and Kastell MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.

Universalcartmerchantgate MCP logoUniversalcartmerchantgate MCPSecurity · Remote HTTP/SSERemote MCP for Universal Cart merchant readiness MCP, structured receipts, audit logs, and reviewer-36FairAuth: not declaredKastell logoKastellSecurity · Local subprocess (stdio)Server security auditing and hardening toolkit. 413 security checks across 29 categories (SSH, Firewall, Docker, TLS, HTTP Headers), CIS/PCI-DSS/HIPAA compliance mapping, 19-step production hardening, fleet management, and forensic evidence collection. Supports Hetzner, DigitalOcean, Vultr, and Linode. 13 MCP tools.61GoodAuth: no auth required

Verdict: choose Universalcartmerchantgate MCP for security work over a hosted endpoint; choose Kastell for security as a local process. You can also run both side by side in one mcpServers block.

Which MCP server should you choose?

Universalcartmerchantgate MCP logoChoose Universalcartmerchantgate MCP when

  • You need dedicated capabilities in the Security domain.
  • You prefer a remote HTTP/SSE transport.
Explore Universalcartmerchantgate MCP

Kastell logoChoose Kastell when

  • You need dedicated capabilities in the Security domain.
  • You prefer a local stdio subprocess transport.
  • Its auth model fits you: No auth required.
Explore Kastell

Feature & specification comparison

Rows where the two servers differ are marked.

SpecUniversalcartmerchantgate MCP logoUniversalcartmerchantgate MCPKastell logoKastell
CategorySecuritySecurity
Quality signal36/100 · Fair61/100 · Good
Install commandConfirmedConfirmed
TransportRemote HTTP/SSELocal subprocess (stdio)
AuthNot declaredNo auth required
PricingNot declaredFree
Required env varsNone listedNone listed
Verified ownerCommunity listingCommunity listing
GitHub stars060
Directory activity 0 views 0 installs 0 upvotes 5 views 0 installs 0 upvotes
ToolsNot listedNot listed

Tools & capabilities

Universalcartmerchantgate MCP tools

No tool names declared yet. Check the project README from the listing page.

Kastell tools

No tool names declared yet. Check the project README from the listing page.

Ready-to-paste client configs

Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.

Universalcartmerchantgate MCP

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "universalcartmerchantgate-mcp": {
      "url": "https://universalcartmerchantgate.clauxel.com/mcp"
    }
  }
}

Kastell

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "kastelldev-kastell": {
      "command": "npx",
      "args": [
        "-y",
        "kastell"
      ]
    }
  }
}

Frequently asked questions

Universalcartmerchantgate MCP is categorized under Security and uses a remote HTTP/SSE transport. Kastell belongs to Security and uses a local stdio subprocess. Pick Universalcartmerchantgate MCP for security work and Kastell for security.

Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.

Universalcartmerchantgate MCP has no declared pricing — check the project's own site. Kastell is listed as free. Auth: no auth required. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.

Yes. MCP clients support multiple servers: add universalcartmerchantgate-mcp and kastelldev-kastell as separate keys in the same mcpServers object, and your assistant will call tools from either one.

On AllMCPs, Universalcartmerchantgate MCP has a quality signal of 36/100 (Fair) with 0 views, 0 installs and 0 GitHub stars. Kastell has 61/100 (Good) with 5 views, 0 installs and 60 GitHub stars.