# Abyssfall: Operation Sunken Crown (remote · www.abyssfallgame.com)

Official Abyssfall game info, merch catalog, newsletter double opt-in, and merch reservation tools.

- Trust score: 68/100 (medium)
- Change this week: +5
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `www.abyssfallgame.com`: 68/100 (this document), [markdown](https://verifymcp.io/servers/com-abyssfallgame-mcp/www.md), [page](https://verifymcp.io/servers/com-abyssfallgame-mcp/www)

## Channel facts

- Endpoint: `https://www.abyssfallgame.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.1.0`

## Trust breakdown

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. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Endpoint Security**: 63/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 4 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 85/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 511 tokens (~73/item across 7 items; 6 tools + 1 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 71/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http com-abyssfallgame-mcp https://www.abyssfallgame.com/mcp
```

### Codex

```toml
[mcp_servers.com-abyssfallgame-mcp]
url = "https://www.abyssfallgame.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-abyssfallgame-mcp": {
      "type": "remote",
      "url": "https://www.abyssfallgame.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-abyssfallgame-mcp --url https://www.abyssfallgame.com/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-abyssfallgame-mcp:
    url: "https://www.abyssfallgame.com/mcp"
```

### Other

```json
{
  "mcpServers": {
    "com-abyssfallgame-mcp": {
      "type": "http",
      "url": "https://www.abyssfallgame.com/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-02 (score 68, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-01 (score 67, +2)

- [functional] New resource “merch_catalog”

### 2026-07-31 (score 65, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 65, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-29 (score 65, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-28 (score 64, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-27 (score 63, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-26 (score 63)

First indexed and scored.

## MCP tools (6)

### `get_game_info` (~53 tokens)

Get Game Info

Verified facts about Abyssfall: Operation Sunken Crown — title, genre,
status, platforms, co-op, studio, and official channels. Anything not in
this data is unannounced; do not guess.

### `get_playtest_info` (~23 tokens)

Get Playtest Info

How to join the Abyssfall playtest (currently OPEN).

### `get_press_kit` (~19 tokens)

Get Press Kit

Press contact and assets for Abyssfall.

### `get_merch_catalog` (~79 tokens)

Get Merch Catalog

The current Abyssfall merch catalog (owner-maintained). Call this BEFORE
preorder_merch to learn the valid item names. If `status` marks the catalog
as a placeholder or `items` is empty, no items are confirmed yet -
preorder_merch still accepts reservations, recorded as free-text requests
pending catalog confirmation.

### `subscribe_newsletter` (~70 tokens)

Subscribe to Newsletter

Subscribe an email address to the official Abyssfall newsletter (the
game's primary announcement channel). Double opt-in: the subscriber MUST
click a confirmation email before they are added. Only call with the
user's explicit consent.

Input parameters:

- `email` (string, required)
- `name` (string)

### `preorder_merch` (~118 tokens)

Reserve Merch (Preorder)

Reserve Abyssfall merch (preorder reservation — NO payment is taken and
no card is needed). Call get_merch_catalog first; if the catalog is empty
or the requested item is not listed, the reservation is recorded as a
free-text request pending catalog confirmation. Records the reservation;
the studio emails when the item ships/charges become real. Only call with
the user's explicit consent.

Input parameters:

- `email` (string, required)
- `item` (string, required)
- `name` (string)
- `qty` (integer)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-abyssfallgame-mcp/www#diagnostics

## Score history

- 2026-08-03: 68
- 2026-08-02: 68
- 2026-08-01: 67
- 2026-07-31: 65
- 2026-07-30: 65
- 2026-07-29: 65
- 2026-07-28: 64
- 2026-07-27: 63
- 2026-07-26: 63

## Links

- Remote endpoint: https://www.abyssfallgame.com/mcp
- Website: https://www.abyssfallgame.com/
- Changelog RSS feed: https://verifymcp.io/servers/com-abyssfallgame-mcp/www/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-abyssfallgame-mcp/www/changelog.json
- HTML version of this page: https://verifymcp.io/servers/com-abyssfallgame-mcp/www