Quiet Failures
REMOTE · MCP.QUIETFAILURES.COM
Open weekly security base rates (CC BY 4.0), plus live DMARC, takeover and WHOIS checks.
Available components
Last scanned (19 minutes ago)
Scores higher than 85% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Security
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security63
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability81
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 657 tokens (~109/item across 6 items; 6 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 7 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 5 Nov 26 +1
- Stability: 0.97 → pass security
- 4 Nov 26 −1
- Stability: pass → 0.97 functional
- 28 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 16 Sept 26 0
- Stability: 0.97 → pass security
- 26 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 20 Aug 26 0
- Server version: 1.4.9 → 1.4.10 functional
- 18 Aug 26 0
- Stability: unverified → 0.03 ▲ functional
- Server version: 1.4.8 → 1.4.9 functional
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Probed https://mcp.quietfailures.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=quietfailures.com | CN=WE1,O=Google Trust Services,C=US | 28 Oct 2026 | 26 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | cfb9576950709f0f0ed02a4dd65f1848 |
| SANs: quietfailures.com, *.quietfailures.com | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of mcp.quietfailures.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| quietfailures.com. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://mcp.quietfailures.com/mcp | Verified | 200 | |
| http (plaintext) | http://mcp.quietfailures.com/mcp | Inconclusive | 405 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
check_email_auth Check email authentication (live) ~90
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.
| Name | Type | Req | Description |
|---|---|---|---|
| domains | – | yes | Domains to audit (1-50). Array preferred; a JSON-encoded array or comma/space-separated string also works. |
No output schema declared.
No examples provided.
check_subdomain_takeover Check subdomain takeover exposure (live) ~68
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.
| Name | Type | Req | Description |
|---|---|---|---|
| domain | string | yes | The apex domain to scan |
No output schema declared.
No examples provided.
check_whois Check domain registrations (live) ~73
Live WHOIS lookup for up to 100 domains: expiry date, registrar, nameservers. Use to catch registrations about to lapse. Rate-limited per client.
| Name | Type | Req | Description |
|---|---|---|---|
| domains | – | yes | Domains to look up (1-100). Array preferred; a JSON-encoded array or comma/space-separated string also works. |
No output schema declared.
No examples provided.
find_base_rate Find a base rate by keyword ~64
Search the Quiet Failures base rates by keyword (e.g. "dmarc", "certificate expiry uk", "subdomain takeover"). Returns matching metrics and their most citable segments.
| Name | Type | Req | Description |
|---|---|---|---|
| query | string | yes | Keywords to search for (at least 2 characters) |
No output schema declared.
No examples provided.
get_base_rate Get one base rate in full ~122
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.
| Name | Type | Req | Description |
|---|---|---|---|
| metric | string | yes | Metric id, e.g. "dmarc-policy" (see list_base_rates) |
| segment | string | – | Segment slug, default "global" |
No output schema declared.
No examples provided.
list_base_rates List security base rates ~62
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.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
How do I install the Quiet Failures MCP server?
Quiet Failures is a hosted endpoint at https://mcp.quietfailures.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · mcp.quietfailures.com
claude mcp add --transport http com-quietfailures-quiet-failures 'https://mcp.quietfailures.com/mcp'
What is the Quiet Failures MCP server?
Quiet Failures is an MCP server listed in the public MCP registry as com.quietfailures/quiet-failures. Open weekly security base rates (CC BY 4.0), plus live DMARC, takeover and WHOIS checks. This page covers its hosted endpoint (https://mcp.quietfailures.com/mcp).
Is the Quiet Failures MCP server safe to use?
Quiet Failures scores 82 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Quiet Failures MCP server expose?
Quiet Failures exposes 6 tools: list_base_rates, find_base_rate, get_base_rate, check_email_auth, check_subdomain_takeover, check_whois. Their descriptions and schemas cost roughly 479 tokens of context every time the server is loaded.
Does the Quiet Failures MCP server require authentication?
No. We connected to Quiet Failures without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Quiet Failures MCP server still maintained?
Quiet Failures is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.