MCP server

Quiet Failures Official

com.quietfailures/quiet-failures

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

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

Website

At a glance

Type

MCP server

Publisher

quietfailures.com (verified by the MCP Registry)

Status

Working at last check

Tools

6

Token cost

About 923 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

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

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

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

Gemini CLI

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

Cursor

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

VS Code

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

Antigravity

agy mcp add quiet-failures https://mcp.quietfailures.com/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"quiet-failures","server_url":"https://mcp.quietfailures.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"quiet-failures","server_url":"https://mcp.quietfailures.com/mcp"}

Tools

• check_email_auth ~181 tokens
  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.
• check_subdomain_takeover ~134 tokens
  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.
• check_whois ~156 tokens
  Live WHOIS lookup for up to 100 domains: expiry date, registrar, nameservers. Use to catch registrations about to lapse. Rate-limited per client.
• find_base_rate ~130 tokens
  Search 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_rate ~208 tokens
  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-c
• list_base_rates ~114 tokens
  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.

Browse

• Domains and DNS

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