INDIVIDUAL MCP TOOL

check_subdomain_takeover

Live scan of one domain: enumerate its subdomains (CT logs + DNS), then test each for dangling references on 13 cloud providers.

quietfailures.comnone authenticationAvailability not checked

LIVE ENDPOINT

https://mcp.quietfailures.com/mcp

No auth detected

Connect to this endpoint to inspect the live schema for check_subdomain_takeover and invoke it with your own arguments.

{}

Inferred read-only · medium confidence · heuristic, not a guarantee.

No write-capable action terms were found; this is not proof that invocation has no side effects.

CONNECT WITH APPROVAL

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.quiet-failures]
url = "https://mcp.quietfailures.com/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "quiet-failures": {
      "type": "http",
      "url": "https://mcp.quietfailures.com/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: quiet-failures
Remote MCP URL: https://mcp.quietfailures.com/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "quiet-failures": {
      "url": "https://mcp.quietfailures.com/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "quiet-failures": {
      "type": "http",
      "url": "https://mcp.quietfailures.com/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "quiet-failures",
  "transport": "streamable-http",
  "url": "https://mcp.quietfailures.com/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

list_base_rates — Catalog of all published Quiet Failures base rates: metric id, the global question, the current global figure, sample size, severity, and every published segment slug (valid `segment` values for get_base_rate).
find_base_rate — Search the Quiet Failures base rates by keyword (e.
get_base_rate — Full detail for one Quiet Failures base rate segment: the figure with confidence interval, how it is measured, why it matters, the limits of the measurement, the recent time series, and the canonical source URL to cite.
check_email_auth — Live SPF, DKIM and DMARC audit of up to 50 domains the user owns or asks about.
check_whois — Live WHOIS lookup for up to 100 domains: expiry date, registrar, nameservers.