Quiet Failures

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

Open weekly security base rates (CC BY 4.0), plus live DMARC, takeover and WHOIS checks.

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "Quiet Failures": {
      "url": "https://mcp.quietfailures.com/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (6)

• list_base_rates read-only

  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). Use get_base_rate for full detail on one.

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• find_base_rate read-only

  Search the Quiet Failures base rates by keyword (e.g. "dmarc", "certificate expiry uk", "subdomain takeover"). Returns matching metrics and their most citable segments.

  Parameters:

  • query (required) — string — Keywords to search for (at least 2 characters)

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• get_base_rate read-only

  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. Segment defaults to "global"; country slugs (gb, fr, us…) and company cuts (gb-companies, gb-small…) are also published.

  Parameters:

  • metric (required) — string — Metric id, e.g. "dmarc-policy" (see list_base_rates)
  • segment — string — Segment slug, default "global"

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• check_email_auth read-only

  Live SPF, DKIM and DMARC audit of up to 50 domains the user owns or asks about. Returns a per-domain breakdown plus a portfolio grade. Compare against the base rates: most of the web fails these controls. Rate-limited per client.

  Parameters:

  • domains (required) — Domains to audit (1-50). Array preferred; a JSON-encoded array or comma/space-separated string also works.

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world yes

• check_subdomain_takeover read-only

  Live scan of one domain: enumerate its subdomains (CT logs + DNS), then test each for dangling references on 13 cloud providers. Slow on large domains (up to a few minutes). Rate-limited per client.

  Parameters:

  • domain (required) — string — The apex domain to scan

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world yes

• check_whois read-only

  Live WHOIS lookup for up to 100 domains: expiry date, registrar, nameservers. Use to catch registrations about to lapse. Rate-limited per client.

  Parameters:

  • domains (required) — Domains to look up (1-100). Array preferred; a JSON-encoded array or comma/space-separated string also works.

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world yes

Publisher website

Measured by MCPYP probing. Untested fields are omitted, never estimated. Listing is always free; MCPYP never proxies calls or stores user tokens.