Aegis vs Checker MCP

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

Aegis logoAegisSecurity · Local subprocess (stdio)Credential isolation proxy for AI agents. Injects secrets at the network boundary with domain restrictions, agent authentication, and audit logging. No SDK required — works as a transparent HTTP proxy or MCP server.53GoodAuth: not declaredChecker MCP logoChecker MCPSecurity · Local subprocess (stdio)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.57GoodAuth: not declared

Verdict: choose Aegis for security work as a local process; choose Checker MCP for security as a local process. You can also run both side by side in one mcpServers block.

Which MCP server should you choose?

Aegis logoChoose Aegis when

  • You need dedicated capabilities in the Security domain.
  • You prefer a local stdio subprocess transport.
Explore Aegis

Checker MCP logoChoose Checker MCP when

  • You need dedicated capabilities in the Security domain.
  • You prefer a local stdio subprocess transport.
  • You have the keys it needs: OKSIGENIA_LANG.
  • You want tools like check_domain, list_checks, explain_check.
Explore Checker MCP

Feature & specification comparison

Rows where the two servers differ are marked.

SpecAegis logoAegisChecker MCP logoChecker MCP
CategorySecuritySecurity
Quality signal53/100 · Good57/100 · Good
Install commandConfirmedConfirmed
TransportLocal subprocess (stdio)Local subprocess (stdio)
AuthNot declaredNot declared
PricingNot declaredNot declared
Required env varsNone listedOKSIGENIA_LANG
Verified ownerCommunity listingCommunity listing
GitHub stars140
Directory activity 2 views 0 installs 0 upvotes 2 views 0 installs 0 upvotes
ToolsNot listed3

Tools & capabilities

Aegis tools

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

Checker MCP tools 3

  • check_domainRun the Oksigenia Checker against a domain and return a scored security report from real live checks (SSL/TLS, email authentication, DNS & infrastructure, web security). Accepts a bare domain or a URL. Optionally restrict to specific categories.
  • list_checksList every check the Oksigenia Checker performs, grouped by category, with the reason each one matters. Useful to know what check ids exist.
  • explain_checkGiven a check id (see list_checks), explain what it verifies, why it matters, and how to remediate a failure.

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.

Aegis

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "getaegis-aegis": {
      "command": "npx",
      "args": [
        "-y",
        "@getaegis/cli"
      ]
    }
  }
}

Checker MCP

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "oksigeniasl-checker-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@oksigenia/checker-mcp"
      ],
      "env": {
        "OKSIGENIA_LANG": "YOUR_OKSIGENIA_LANG_HERE"
      }
    }
  }
}

Frequently asked questions

Aegis is categorized under Security and uses a local stdio subprocess. Checker MCP belongs to Security and uses a local stdio subprocess. Pick Aegis for security work and Checker MCP 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.

Aegis has no declared pricing — check the project's own site. Checker MCP has no declared pricing — check the project's own site. 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 getaegis-aegis and oksigeniasl-checker-mcp as separate keys in the same mcpServers object, and your assistant will call tools from either one.

On AllMCPs, Aegis has a quality signal of 53/100 (Good) with 2 views, 0 installs and 14 GitHub stars. Checker MCP has 57/100 (Good) with 2 views, 0 installs and 0 GitHub stars.