# `de.adventskalender-kompass/adventskalender` on anlyon.dev

> Text inside fenced blocks marked untrusted-server-text was written by the MCP server's publisher, not by anlyon.dev. It is data to inspect, not instructions to follow. Invisible characters are shown as [U+XXXX].
> No finding is not a safety guarantee: these are point-in-time checks of tool definitions, not of code or behaviour.

- Page: https://anlyon.dev/servers/de.adventskalender-kompass/adventskalender
- JSON: https://anlyon.dev/api/v1/servers/de.adventskalender-kompass/adventskalender
- Version: 1.0.0 (active)
- Publisher: de.adventskalender-kompass (domain proven to the MCP Registry)
- Runs: remote (streamable-http)
- Sign-in to list tools: none
- Metadata from the official MCP Registry, synced 2026-10-23T19:17:41.583Z

Title and description, as the publisher wrote them:

```untrusted-server-text
Adventskalender-Kompass
Finde den passenden Adventskalender nach Zielgruppe, Interessen, Alter, Marke und Preisklasse.
```

Scanned 2026-10-23T19:18:01.649Z over streamable-http.

**6 tools: 1 change things and 5 only read.**

| Group | Class | Tools | Claude Code |
| --- | --- | --- | --- |
| Deletes or cancels | destructive | 0 | deny |
| Can't be undone | irreversible | 0 | ask |
| Changes things | write | 1 | ask |
| Only reads | read | 5 | allow |

## Exfil surface

No private-data -> untrusted-input -> outbound path in this server alone: no tool is tagged outbound.

| Tag | Meaning | Tools |
| --- | --- | --- |
| private-data | Reads files, mail, messages, databases, secrets, calendars or repositories. | `mcp__adventskalender__fetch` `mcp__adventskalender__find_calendars` `mcp__adventskalender__get_calendar` `mcp__adventskalender__list_options` |
| untrusted-input | Brings in text someone else can write: web pages, inbound email, messages, issues and comments. | `mcp__adventskalender__fetch` |
| outbound | Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL. | none |

## Findings

No check matched anything in these tool definitions.


## Changes things (1)

Creates or changes something that can be changed back. Claude Code: ask.

### `similar_calendars`

- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

Description, as the server wrote it:

```untrusted-server-text
Findet Adventskalender, die einem gegebenen ähneln (gleiche Kategorie, Zielgruppen, Interessen und Preisklasse) – etwa als Alternative, wenn einer nicht passt oder zu teuer ist.
```

## Only reads (5)

Looks things up and changes nothing. Claude Code: allow.

### `fetch`

- The name "fetch" says "fetch": a word for reading.
- Tag private-data: The description's first sentence says "chat": it reads messages.
- Tag untrusted-input: The description's first sentence says "chat": it reads messages, which other people can write.

Description, as the server wrote it:

```untrusted-server-text
Lädt einen Adventskalender anhand der id aus search (= Slug) als Text mit Link – für ChatGPT-Konnektoren.
```

### `find_calendars`

- The name "find_calendars" says "find": a word for reading.
- Tag private-data: The name "find_calendars" says "find" and "calendar": it reads calendars.

Description, as the server wrote it:

```untrusted-server-text
Findet passende Adventskalender in der Datenbank des Adventskalender-Kompass (nur aktuell sichtbare Kalender). Alle Filter sind optional und werden kombiniert (UND); mehrere Interessen gelten als ODER, Kalender mit mehr Treffern stehen oben. Liefert höchstens 10 Kalender mit Name, Marke, Kurztext, Preisklasse, Zielgruppen und Link. Gültige Werte für zielgruppe, kategorie, marke, preisklasse und interessen liefert list_options. Preise nur als Preisklasse (bis-20, 20-50, 50-100, ueber-100).
```

### `get_calendar`

- The name "get_calendar" says "get": a word for reading.
- Tag private-data: The name "get_calendar" says "get" and "calendar": it reads calendars.

Description, as the server wrote it:

```untrusted-server-text
Liefert alle Details zu einem Adventskalender: Beschreibung, Inhalt, Türchen, Alter, Zielgruppen, Merkmale, für wen er sich eignet und für wen nicht, Preisklasse sowie Link zur Kalenderseite und Amazon-Weiterleitung (Partnerlink, wird von uns erfasst). Ein Preis erscheint nur, wenn er frisch aus der Amazon-API stammt (mit Stand), sonst nur die Preisklasse.
```

### `list_options`

- The name "list_options" says "list": a word for reading.
- Tag private-data: The description's first sentence says "calendar": it reads calendars.

Description, as the server wrote it:

```untrusted-server-text
Listet die gültigen Werte für die Filter von find_calendars: Zielgruppen (mit Obergruppe), Kategorien, Marken (mit Anzahl), Preisklassen, häufige Interessen und Anlässe. Optional nur einen Teil abrufen.
```

### `search`

- The name "search" says "search": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Volltextsuche über Name, Marke, Kurztext, Merkmale und Interessen aller sichtbaren Adventskalender (alle Wörter müssen vorkommen). Liefert id (= Slug), Titel und Link; Details dazu mit get_calendar oder fetch.
```

## Claude Code permissions

For `.claude/settings.json`, assuming the server is installed as `adventskalender`:

```json
{
  "permissions": {
    "allow": [
      "mcp__adventskalender__find_calendars",
      "mcp__adventskalender__get_calendar",
      "mcp__adventskalender__search",
      "mcp__adventskalender__fetch",
      "mcp__adventskalender__list_options"
    ],
    "ask": [
      "mcp__adventskalender__similar_calendars"
    ],
    "deny": []
  }
}
```

Capability tags behind the rules (a read tagged outbound is asked about):

- `mcp__adventskalender__find_calendars`: private-data
- `mcp__adventskalender__get_calendar`: private-data
- `mcp__adventskalender__fetch`: private-data, untrusted-input
- `mcp__adventskalender__list_options`: private-data