# `com.fitiny/moissanite-tools` 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.fitiny/moissanite-tools
- JSON: https://anlyon.dev/api/v1/servers/com.fitiny/moissanite-tools
- Version: 1.0.0 (active)
- Publisher: com.fitiny (domain proven to the MCP Registry)
- Runs: remote (streamable-http)
- Sign-in to list tools: none
- Repository: https://github.com/FITINY/moissanite-tools
- Metadata from the official MCP Registry, synced 2026-10-21T17:54:52.411Z

Title and description, as the publisher wrote them:

```untrusted-server-text
FITINY jewellery tools: density-corrected carat/mm, GIA grades, ISO 8653 ring sizes
```

Scanned 2026-10-21T18:34:09.836Z over streamable-http.

**6 tools: 6 change things.**

| Group | Class | Tools | Claude Code |
| --- | --- | --- | --- |
| Deletes or cancels | destructive | 0 | deny |
| Can't be undone | irreversible | 0 | ask |
| Changes things | write | 6 | ask |
| Only reads | read | 0 | allow |

## Findings

No check matched anything in these tool definitions.


## Changes things (6)

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

### `carat_to_mm`

- 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
Diameter in millimetres for a given carat weight. Round brilliant cut. Density-corrected per stone - a diamond chart is wrong for moissanite by ~9%.
```

### `grading_scale`

- 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
GIA colour (D-K) or clarity (FL-SI) scale as used for moissanite, or published optical constants for moissanite / diamond / cubic zirconia.
```

### `mm_to_carat`

- 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
Carat weight for a given diameter in millimetres. Round brilliant cut.
```

### `necklace_length`

- 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
Where a necklace of a given length sits, with the trade name (choker, princess, matinee...).
```

### `ring_size_convert`

- The name "ring_size_convert" says "convert": a word for a change.

Description, as the server wrote it:

```untrusted-server-text
Convert a ring size between US, UK, EU (ISO 8653) and inner diameter in mm. A US 6 is a UK M, not a UK 6.
```

### `stud_appearance`

- 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
How a round stud of a given stone diameter reads on the ear.
```

## Claude Code permissions

For `.claude/settings.json`, assuming the server is installed as `moissanite-tools`:

```json
{
  "permissions": {
    "allow": [],
    "ask": [
      "mcp__moissanite-tools__carat_to_mm",
      "mcp__moissanite-tools__mm_to_carat",
      "mcp__moissanite-tools__grading_scale",
      "mcp__moissanite-tools__ring_size_convert",
      "mcp__moissanite-tools__necklace_length",
      "mcp__moissanite-tools__stud_appearance"
    ],
    "deny": []
  }
}
```