Domain Security vs Checker MCP
A side-by-side look at the Domain Security and Checker MCP MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Domain Security 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?
Choose Domain Security when
- You need dedicated capabilities in the Security domain.
- You prefer a local stdio subprocess transport.
- You want tools like
spf_check, dmarc_check, dkim_check.
Choose 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.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Security | Security |
| Quality signal | 56/100 · Good | 57/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | Not declared | Not declared |
| Pricing | Not declared | Not declared |
| Required env vars | None listed | OKSIGENIA_LANG |
| Verified owner | Community listing | Community listing |
| GitHub stars | 1 | 0 |
| Directory activity | 0 views 0 installs 0 upvotes | 2 views 0 installs 0 upvotes |
| Tools | 18 | 3 |
| Full listing | View Domain Security | View Checker MCP |
Tools & capabilities
Domain Security tools 18
spf_checkParse SPF; recursively count DNS lookups vs the RFC 7208 limit of 10; flag `+all`/`?alldmarc_checkParse the DMARC record (every tag is returned) and flag a missing or invalid `p`, `p=none`, no `rua` and `pct` under 100dkim_checkProbe `<selector>._domainkey` keys (supply selectors or use common ones)mta_sts_checkValidate the `_mta-sts` TXT **and** the `.well-known/mta-sts.txt` policy + modetls_rpt_checkCheck the `_smtp._tls` TLS-RPT recordbimi_checkCheck the `default._bimi` BIMI recorddnssec_checkDS/DNSKEY presence + DNSSEC `AD` validation flag (via DoH)dns_lookupAll record types (A/AAAA/CNAME/MX/NS/TXT/SOA) via public resolversssl_certificateTLS cert issuer, validity window, days-to-expiry, SANs, fingerprintwhois_lookupRegistrar, dates, name servers, status (raw port-43 WHOIS, IANA-resolved)reverse_dnsPTR records for an IPip_geolocationOffline IP geolocation ([DB-IP Lite](https://db-ip.com)) + reverse DNS- +6 more on 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.
Domain Security
{
"mcpServers": {
"domain-security": {
"command": "npx",
"args": [
"-y",
"domain-security-mcp-server"
]
}
}
}
Checker MCP
{
"mcpServers": {
"oksigeniasl-checker-mcp": {
"command": "npx",
"args": [
"-y",
"@oksigenia/checker-mcp"
],
"env": {
"OKSIGENIA_LANG": "YOUR_OKSIGENIA_LANG_HERE"
}
}
}
}
Frequently asked questions
Domain Security is categorized under Security and uses a local stdio subprocess. Checker MCP belongs to Security and uses a local stdio subprocess. Pick Domain Security 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.
Domain Security 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 domain-security and oksigeniasl-checker-mcp as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Domain Security has a quality signal of 56/100 (Good) with 0 views, 0 installs and 1 GitHub stars. Checker MCP has 57/100 (Good) with 2 views, 0 installs and 0 GitHub stars.