Quiet Failures

Connect it to your AI

Claude Code

claude mcp add --transport http quiet-failures https://mcp.quietfailures.com/mcp

Claude, ChatGPT, Cursor and other apps

Add it as a custom connector with this URL (Streamable HTTP):

https://mcp.quietfailures.com/mcp

Cursor, VS Code and other apps (mcp.json)

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

Tools it offers

6 tools, as the server itself reported during our check on Oct 31, 2026.

• list_base_ratesCatalog 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_b
• find_base_rateSearch the Quiet Failures base rates by keyword (e.g. "dmarc", "certificate expiry uk", "subdomain takeover"). Returns matching metrics and their most citable segments.
• get_base_rateFull 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_authLive 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 pe
• check_subdomain_takeoverLive 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.
• check_whoisLive WHOIS lookup for up to 100 domains: expiry date, registrar, nameservers. Use to catch registrations about to lapse. Rate-limited per client.

Questions