# `com.tgboard/catalog` 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/com.tgboard/catalog
- JSON: https://anlyon.dev/api/v1/servers/com.tgboard/catalog
- Version: 1.0.0 (active)
- Publisher: com.tgboard (domain proven to the MCP Registry)
- Runs: remote (streamable-http)
- Sign-in to list tools: none
- Metadata from the official MCP Registry, synced 2026-10-21T18:06:41.053Z

Title and description, as the publisher wrote them:

```untrusted-server-text
tgboard — Telegram Directory
Search 100k+ auto-verified Telegram channels, bots and groups: full-text search and top rankings.
```

Scanned 2026-10-21T18:56:26.106Z over streamable-http.

**4 tools: 1 change things and 3 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 | 3 | allow |

## Exfil surface

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

| Tag | Meaning | Tools |
| --- | --- | --- |
| private-data | Reads files, mail, messages, databases, secrets, calendars or repositories. | none |
| untrusted-input | Brings in text someone else can write: web pages, inbound email, messages, issues and comments. | none |
| 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.

### `top_telegram_resources`

- Nothing in its name or description says what it does, so it is counted as a write.

Description, as the server wrote it:

```untrusted-server-text
The most-followed Telegram resources, optionally within one category.

    Args:
        type: channels | bots | apps | groups | stickers (default channels).
        category: Optional category slug, e.g. 'channels-crypto' (see list_telegram_categories).
        lang: Result language: en | ru | it | es | fr | ar (default en).
        limit: Max results, 1-25 (default 10).
    
```

## Only reads (3)

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

### `get_telegram_resource`

- The name "get_telegram_resource" says "get": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Detailed card of one catalog resource by its TGBoard slug.

    Args:
        slug: The resource slug from a TGBoard URL or a search result.
        lang: Description language: en | ru | it | es | fr | ar (default en).
    
```

### `list_telegram_categories`

- The name "list_telegram_categories" says "list": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
Catalog categories with live resource counts (use slugs in other tools).

    Args:
        type: Optional filter — channels | bots | apps | groups | stickers.
        lang: Category-name language: en | ru | it | es | fr | ar (default en).
    
```

### `search_telegram`

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

Description, as the server wrote it:

```untrusted-server-text
Full-text search across the TGBoard catalog of Telegram resources.

    Args:
        query: What to look for (topic, name, keyword).
        type: Optional filter — channels | bots | apps | groups | stickers.
        lang: Result language: en | ru | it | es | fr | ar (default en).
        limit: Max results, 1-25 (default 10).
    
```

## Claude Code permissions

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

```json
{
  "permissions": {
    "allow": [
      "mcp__catalog__search_telegram",
      "mcp__catalog__get_telegram_resource",
      "mcp__catalog__list_telegram_categories"
    ],
    "ask": [
      "mcp__catalog__top_telegram_resources"
    ],
    "deny": []
  }
}
```

## Remote posture

What an anonymous client saw at the remote endpoint, last 2026-10-22T14:42:16.562Z, unchanged since 2026-10-22T14:42:16.562Z. No credentials were sent and no tool was called. Values are shown as the endpoint returned them. Method: https://anlyon.dev/methodology#remote-posture

| Fact | Observed |
| --- | --- |
| Reachable | `yes` |
| HTTP status of an anonymous initialize | `200` |
| tools/list served without credentials | `yes` |
| Tools that change things, listed without credentials | `1` |
| Protocol version | `2025-06-18` |
| WWW-Authenticate on 401 | `not observed` |
| resource_metadata in WWW-Authenticate | `none` |
| RFC 9728 protected resource metadata | `none` |
| Authorization servers | `none` |
| Legacy HTTP+SSE transport | `no` |
| Dynamic client registration | `not observed` |
| Client ID metadata documents | `not observed` |

- **warn** Tools that change things, listed to anyone ([unauth-remote-writes](https://anlyon.dev/methodology#unauth-remote-writes))

```untrusted-server-text
The endpoint served tools/list without credentials, and the list has 1 tool that changes things (1 write). Whether a call also works without credentials was not tested: tools are never called.

https://tgboard.com/mcp/: tools/list returned 4 tools to an anonymous client, including top_telegram_resources (write)
```