Reuffel
REMOTE · WWW.REUFFEL.DE · 2 COMPONENTS
Search for books and book-related products, with access to product and delivery details
Available components
Last scanned (22 hours ago)
Scores higher than 19% of remote servers
Reachable. Last reached 4 Nov 2026.
Category E-commerce
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 Security89
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- The endpoint enforces authorisation, but returns a challenge with no valid RFC 9728 metadata, so a client cannot discover where to get a token. See how to fix → View diagnostics → Fail
- 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 & Reachability0
- Transport blocked by authentication: the endpoint requires auth we don't have to verify streamable-http. See how to fix → View diagnostics → Unverified
Schema Quality & AI Usability0
- Schema blocked by authentication: the endpoint requires auth we don't have to read it. See how to fix → Unverified
Stability & Change Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage0
- Tool coverage blocked by authentication: the endpoint requires auth we don't have to read its tools.Unverified
Tool Safety0
- Tool safety blocked by authentication: the endpoint requires auth we don't have to read its tools.Unverified
Capabilities0
- Capabilities blocked by authentication: the endpoint requires auth we don't have to read them. See how to fix → Unverified
Unverified: 6 categories
Categories scored 0 because we could not verify them: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm. Claim this server and supply a read-only token to verify it and lift the score.
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.
- 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
- 23 Sept 26 0
- Endpoint reachability: reachable → behind authorisation ▼ security
- Authorization: unverified → fail ▼ security
- Tool safety: pass → unverified ▼ security
- Stability: 0.93 → unverified ▼ security
- Transport: pass → unverified ▼ security
- Capabilities: pass → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- First check of Schema quality: unverified functional
- 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
- 25 Aug 26 0
First indexed and scored.
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 4 Nov 2026 · Probed https://www.reuffel.de/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=reuffel.de | CN=YE2,O=Let's Encrypt,C=US | 17 Sept 2026 | 16 Dec 2026 | ECDSA 256 | ECDSA-SHA384 | 691639bf561f54cd244f16881c395008aba |
| SANs: *.reuffel.de, reuffel.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 www.reuffel.de. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| de. | present | 26755 | 8 | Verified |
| reuffel.de. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication Challenged, unverified
The endpoint asked for a token, but we could not retrieve and validate the RFC 9728 metadata that tells a client how to obtain one.
| Result | Challenged, unverified |
|---|---|
| Enforced | On connection |
| HTTP status | 403 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=15552000; includeSubDomains |
| content-security-policy | default-src 'none'; script-src 'nonce-l5QUjspaevUpIIno0rWI2z' 'unsafe-eval' https://challenges.cloudflare.com; script-src-attr 'none'; style-src 'unsafe-inline'; img-src 'self' https://challenges.cloudflare.com; connect-src 'self' https://challenges.cloudflare.com; frame-src 'self' https://challenges.cloudflare.com blob:; child-src 'self' https://challenges.cloudflare.com blob:; worker-src blob:; form-action http: https:; base-uri 'self' |
| x-content-type-options | nosniff |
| x-frame-options | SAMEORIGIN |
| referrer-policy | same-origin |
| permissions-policy | accelerometer=(),camera=(),clipboard-read=(),clipboard-write=(),geolocation=(),gyroscope=(),hid=(),magnetometer=(),microphone=(),payment=(),publickey-credentials-get=(),screen-wake-lock=(),serial=(),sync-xhr=(),usb=(),xr-spatial-tracking=* |
Protected resource metadata
| Retrieved | No |
|---|---|
| Problem | no_resource_metadata |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://www.reuffel.de/mcp | Auth required | 403 | |
| http (plaintext) | http://www.reuffel.de/mcp | HTTPS enforced | 301 | https://www.reuffel.de/mcp |
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 →
get_product_details ~116
Fetches current availability, price, and stock levels of a book by its ISBN. This tool should be used when users ask about the status or price of a specific title. In the result: shop_url links to the product page in the shop. order_link adds the product directly to the cart and navigates there – only offer this link when the user wants to buy/order the product.
| Name | Type | Req | Description |
|---|---|---|---|
| isbn | string | yes | The 10- or 13-digit ISBN of the book (e.g., 9783033095060) |
No output schema declared.
No examples provided.
search_products ~646
Sucht nach Büchern, Hörbüchern und anderen Medien im lokalen Buchhandels-Katalog. Dieses Tool IMMER verwenden, wenn der Benutzer nach Büchern sucht, Verfügbarkeit prüfen möchte oder Preise wissen will – vor jeder Websuche Gibt Basis-Informationen zurück: Titel, Autor, Preis, Verfügbarkeit. Für Filial-Verfügbarkeit und detaillierte Store-Infos (available_in_stores, Abholstationen) nutze get_product_details mit der ISBN. Im Ergebnis: shop_url führt zur Produktseite im Shop. order_link legt das Produkt direkt in den Warenkorb und führt dorthin – diesen Link nur anbieten, wenn der Benutzer das Produkt kaufen/bestellen möchte. Führt eine Freitextsuche oder eine strukturierte Suche durch. **Syntax:** Key:Wert oder Key:>Wert oder Key:<Wert. Mehrere Kriterien werden durch Leerzeichen getrennt. **Beispiel:** T:"Hundert Jahre Einsamkeit" WG:100 OrderAllowed:=1 **Verfügbare Suchschlüssel (Keys):** - AU:Autor ; immer im Format "Nachname, Vorname" (z.B. AU:"marie, annette") - BI:Einbandart - EJ:Erscheinungsjahr / ED: Erscheinungstag - Edition:Auflage - Genre:Genre (Abenteuer, Drama etc.) - I:ISBN/GTIN - LMH/LMN:Haupt- oder Nebenlesemotiv (z.B. LMH:02) - MG/MN:Meldegruppe/Meldenummer - OrderAllowed:=1 (Filter für kaufbare Produkte) - PR:Preis - PTC:Product Type Code ; 10 = Buch, 11 = Taschenbuch, 12 = Hörbuch, 13 = E-Book, 14 = Book on Demand, 15 = Zeitschrift, 16 = Fortsetzung, 17 = Karten und Globen, 18 = Kalender, 19 = Musikalien, 20 = Film, 21 = Tonträger, 22 = Software, 23 = Videospiel, 24 = Bundle, 25 = übrige digitale Produkte - R:Reihe (z.B. R:"Alex Verus") - SP:Sprachcode (ger/eng/fre/...) - ST:Standort / STN:Filiale (z.B. STN:H:11080) - TG:Titelgruppe - T:Titel (z.B. T:"Harry Potter") - V:Verlag - W:Schlagwort - WG:Warengruppe / VLBWG:VLB-Warengruppe **Thema-Klassifikationen:** Nutze W:THEMA... für spezifische Filter (geo, lang, time, edu, interest, style).
| Name | Type | Req | Description |
|---|---|---|---|
| bpmorder | string | – | Optionale Sortierung der Ergebnisse. Standard ist Relevanz. |
| bpmquery | string | yes | Die Suchanfrage. Akzeptiert Freitext oder strukturierte Keys (z.B. 'T:Titel AU:Autor'). |
No output schema declared.
No examples provided.
How do I install the Reuffel MCP server?
Reuffel is a hosted endpoint at https://www.reuffel.de/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 · www.reuffel.de
claude mcp add --transport http majahelferbiene-rekwebrew 'https://www.reuffel.de/mcp'
What is the Reuffel MCP server?
Reuffel is an MCP server listed in the public MCP registry as io.github.MajaHelferbiene/rekwebrew. Search for books and book-related products, with access to product and delivery details. This page covers its hosted endpoint (https://www.reuffel.de/mcp).
Is the Reuffel MCP server safe to use?
Reuffel scores 36 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 Reuffel MCP server expose?
Reuffel exposes 2 tools: search_products, get_product_details. Their descriptions and schemas cost roughly 762 tokens of context every time the server is loaded.
Does the Reuffel MCP server require authentication?
Yes. Reuffel asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.
Is the Reuffel MCP server still maintained?
Reuffel is still listed as active in the MCP registry. We last reached this channel on 4 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.