SofortFax – Faxen mit KI
REMOTE · SOFORTFAX.DE
Send real faxes from AI chat (DE/AT + 40 countries). PDF, JPG, photo. Pay per fax via Stripe.
Available components
Last scanned (4 hours ago)
Scores higher than 89% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Communication
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 Security80
- 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 is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- 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 Usability65
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 887 tokens (~221/item across 4 items; 4 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management87
- Stability observed for 26 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
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
- All 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.Pass
- An AI judge read all 5 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
No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.
- 3 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 77 to 80. That category is still filling its 30-day observation window: 23 days of observed history at the previous scan, 24 at this one. The score rises as the window fills, whether or not the server changes.
- 31 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 67 to 70. That category is still filling its 30-day observation window: 20 days of observed history at the previous scan, 21 at this one. The score rises as the window fills, whether or not the server changes.
- 29 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 60 to 63. That category is still filling its 30-day observation window: 18 days of observed history at the previous scan, 19 at this one. The score rises as the window fills, whether or not the server changes.
- 27 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.
- 25 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 47 to 50. That category is still filling its 30-day observation window: 14 days of observed history at the previous scan, 15 at this one. The score rises as the window fills, whether or not the server changes.
- 23 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 40 to 43. That category is still filling its 30-day observation window: 12 days of observed history at the previous scan, 13 at this one. The score rises as the window fills, whether or not the server changes.
- 21 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.
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://sofortfax.de/api/mcp.php
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=sofortfax.de | CN=YE2,O=Let's Encrypt,C=US | 27 Sept 2026 | 26 Dec 2026 | ECDSA 256 | ECDSA-SHA384 | 54e8795f3b4b242053a029921cf8af5c2ff |
| SANs: sofortfax.de, www.sofortfax.de | ||||||
| CN=YE2,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 4df3b15dd6c0784c507cd37b58e6f115 |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of sofortfax.de. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| de. | present | 26755 | 8 | Verified |
| sofortfax.de. | 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 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=31536000; includeSubDomains; preload |
| x-content-type-options | nosniff |
| x-frame-options | SAMEORIGIN |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | geolocation=(), microphone=(self), camera=() |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://sofortfax.de/api/mcp.php | Verified | 200 | |
| http (plaintext) | http://sofortfax.de/api/mcp.php | HTTPS enforced | 301 | https://sofortfax.de/api/mcp.php |
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 →
create_upload_link Upload-Link erstellen ~80
Erstellt einen sicheren Einmal-Upload-Link (30 Minuten gültig) für das Fax-Dokument: PDF, JPG, PNG oder direkt ein Foto mit der Handykamera, max. 10 MB. Der Nutzer öffnet upload_url und lädt die Datei hoch; danach send_fax mit der upload_id. Kostet nichts und sendet nichts.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
get_fax_price Faxpreis abfragen ~83
Zeigt den Preis für ein Fax (Pay per Fax, Endpreise, gemäß §19 UStG ohne Umsatzsteuer) und prüft, ob die Faxnummer erlaubt ist. Sendet nichts.
| Name | Type | Req | Description |
|---|---|---|---|
| fax_number | string | – | Faxnummer des Empfängers (optional). |
| pages | integer | – | Seitenzahl (optional, 1–40). |
No output schema declared.
No examples provided.
get_fax_status Faxstatus abfragen ~67
Liefert den Status eines Faxes (Zahlung ausstehend, geplant, wird gesendet, zugestellt, fehlgeschlagen, storniert) und nach Zustellung den Link zum Sendebericht.
| Name | Type | Req | Description |
|---|---|---|---|
| fax_id | string | yes | fax_id aus send_fax. |
No output schema declared.
No examples provided.
send_fax Fax senden ~483
Bereitet ein echtes Fax über SofortFax vor und liefert einen sicheren Stripe-Bezahllink (2,49 € – 4,99 €). Das Fax wird erst nach der Zahlung gesendet. Vorher dem Nutzer Faxnummer, Dokument und ggf. Sendezeitpunkt bestätigen lassen. DOKUMENT (genau eines): "upload_id" aus create_upload_link (für Dateien/Fotos auf dem Gerät), "file" (in ChatGPT angehängte Datei, wird automatisch befüllt), "document_url" (direkter öffentlicher HTTPS-Link zu PDF/JPG/PNG) oder "document_base64" (nur sehr kleine Dateien, max. 700 KB). Bestätigung, Zustellbericht (Sendebericht) und Rechnung kommen per E-Mail an "email". Das Ergebnis sagt eindeutig, ob das Fax gesendet, geplant oder noch unbezahlt ist.
| Name | Type | Req | Description |
|---|---|---|---|
| document_base64 | string | – | Nur sehr kleine Dateien (max. 700 KB) als Base64 oder data:-URI. Besser create_upload_link. |
| document_name | string | – | Optional: Dateiname (z. B. "Kuendigung.pdf"), erscheint im Sendebericht. |
| document_url | string | – | Direkter, öffentlicher HTTPS-Link zu einer PDF-, JPG- oder PNG-Datei. |
| string | yes | Pflicht: E-Mail des Nutzers für Sendebestätigung, Sendebericht und Rechnung. | |
| fax_number | string | yes | Faxnummer des Empfängers, international (+49 30 12345678) oder deutsch (030 12345678). 0180 erlaubt; 0900/0137/118xx und Mobilnummern nicht. |
| file | object | – | ChatGPT: die im Chat angehängte Datei (PDF, JPG, PNG). Wird von ChatGPT automatisch befüllt. |
| promo_code | string | – | Optional: SofortFax-Gutscheincode. |
| scheduled_at | string | – | Optional: zeitversetzt senden, z. B. "2026-10-12T09:30" (deutsche Zeit). 15 Minuten bis 30 Tage in der Zukunft. Weglassen = sofort. |
| upload_id | string | – | upload_id aus create_upload_link (nachdem der Nutzer die Datei hochgeladen hat). Einmalig verwendbar. |
No output schema declared.
No examples provided.
How do I install the SofortFax – Faxen mit KI MCP server?
SofortFax – Faxen mit KI is a hosted endpoint at https://sofortfax.de/api/mcp.php, 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 · sofortfax.de
claude mcp add --transport http de-sofortfax-fax 'https://sofortfax.de/api/mcp.php'
What is the SofortFax – Faxen mit KI MCP server?
SofortFax – Faxen mit KI is an MCP server listed in the public MCP registry as de.sofortfax/fax. Send real faxes from AI chat (DE/AT + 40 countries). PDF, JPG, photo. Pay per fax via Stripe. This page covers its hosted endpoint (https://sofortfax.de/api/mcp.php).
Is the SofortFax – Faxen mit KI MCP server safe to use?
SofortFax – Faxen mit KI scores 84 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 SofortFax – Faxen mit KI MCP server expose?
SofortFax – Faxen mit KI exposes 4 tools: get_fax_price, send_fax, get_fax_status, create_upload_link. Their descriptions and schemas cost roughly 713 tokens of context every time the server is loaded.
Does the SofortFax – Faxen mit KI MCP server require authentication?
No. We connected to SofortFax – Faxen mit KI without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the SofortFax – Faxen mit KI MCP server still maintained?
SofortFax – Faxen mit KI 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.