# Shiritori Dictionary (Japanese) (remote · shiritori.omikuji.dev)

Play Japanese shiritori with a 90,000-word dictionary: check moves, suggest next words.

- Trust score: 75/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-23

## Components

- remote · `shiritori.omikuji.dev`: 75/100 (this document), [markdown](https://verifymcp.io/servers/dev-omikuji-shiritori/shiritori.md), [page](https://verifymcp.io/servers/dev-omikuji-shiritori/shiritori)

## Channel facts

- Endpoint: `https://shiritori.omikuji.dev/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## 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 2026-10-23.

- **Endpoint Security**: 80/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - 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**: 67/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 489 tokens (~163/item across 3 items; 3 tools + 0 resources), over budget; trim descriptions and params.
  - 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**: 90/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 69% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 4 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the Shiritori Dictionary (Japanese) MCP server?

Shiritori Dictionary (Japanese) is a hosted endpoint at https://shiritori.omikuji.dev/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.

### Claude

```bash
claude mcp add --transport http dev-omikuji-shiritori 'https://shiritori.omikuji.dev/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "dev-omikuji-shiritori": {
      "url": "https://shiritori.omikuji.dev/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "dev-omikuji-shiritori": {
      "type": "http",
      "url": "https://shiritori.omikuji.dev/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.dev-omikuji-shiritori]
url = "https://shiritori.omikuji.dev/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "dev-omikuji-shiritori": {
      "type": "remote",
      "url": "https://shiritori.omikuji.dev/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add dev-omikuji-shiritori --url 'https://shiritori.omikuji.dev/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  dev-omikuji-shiritori:
    url: "https://shiritori.omikuji.dev/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "dev-omikuji-shiritori": {
      "Transport": "http",
      "Url": "https://shiritori.omikuji.dev/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add dev-omikuji-shiritori -t streamable-http -u 'https://shiritori.omikuji.dev/mcp'
```

### Other

```json
{
  "mcpServers": {
    "dev-omikuji-shiritori": {
      "type": "http",
      "url": "https://shiritori.omikuji.dev/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.

### 2026-10-23 (score 75, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-20 (score 74, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-18 (score 73, +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.

### 2026-10-16 (score 72, +1)

- [security] The server rewrote its instructions, which are the text every model session reads
- [functional improvement] Stability: unverified → 0.03

### 2026-10-15 (score 71)

First indexed and scored.

## MCP tools (3)

### `check_move` (~135 tokens)

Check a shiritori move

Check whether the next word correctly follows the previous word in shiritori: it must start with the previous word's last kana, it loses if it ends in ん or was already used. Also tells whether each word is in the dictionary and what the next word must start with.

Input parameters:

- `loose_dakuten` (boolean): House rule: allow ば→は/ぱ style dakuten variants.
- `next` (string, required): The word just said.
- `previous` (string, required): The previous word (kana is safest; kanji is looked up in the dictionary).
- `used` (array): Words already used in this game.

### `suggest_next` (~178 tokens)

Suggest next words

Pick random words that can follow the previous word (or start with a given kana), excluding words already used and, by default, words ending in ん. pool "everyday" (default) uses hand-picked everyday words, "common" adds common dictionary words, "all" uses the whole dictionary.

Input parameters:

- `after` (string): The previous word.
- `allow_n` (boolean): Include words ending in ん (they lose).
- `count` (integer)
- `exclude` (array): Words already used in this game.
- `genre` (string): Theme for 食べ物しりとり etc. (everyday words only).
- `loose_dakuten` (boolean)
- `pool` (string)
- `start_char` (string): Or: one kana to start with, e.g. "り".

### `check_word` (~62 tokens)

Check a word

Look up a word: is it in the dictionary, its reading, its first and last kana under shiritori rules (ー and small kana handled), whether it ends in ん, and which kana the next word must start with.

Input parameters:

- `word` (string, required)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/dev-omikuji-shiritori/shiritori#diagnostics

## Score history

- 2026-10-23: 75
- 2026-10-22: 74
- 2026-10-21: 74
- 2026-10-20: 74
- 2026-10-19: 73
- 2026-10-18: 73
- 2026-10-17: 72
- 2026-10-16: 72
- 2026-10-15: 71

## Common questions

### What is the Shiritori Dictionary (Japanese) MCP server?

Shiritori Dictionary (Japanese) is an MCP server listed in the public MCP registry as dev.omikuji/shiritori. Play Japanese shiritori with a 90,000-word dictionary: check moves, suggest next words. This page covers its hosted endpoint (https://shiritori.omikuji.dev/mcp).

### Is the Shiritori Dictionary (Japanese) MCP server safe to use?

Shiritori Dictionary (Japanese) scores 75 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 Shiritori Dictionary (Japanese) MCP server expose?

Shiritori Dictionary (Japanese) exposes 3 tools: check_move, suggest_next, check_word. Their descriptions and schemas cost roughly 375 tokens of context every time the server is loaded.

### Does the Shiritori Dictionary (Japanese) MCP server require authentication?

No. We connected to Shiritori Dictionary (Japanese) without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Shiritori Dictionary (Japanese) MCP server still maintained?

Shiritori Dictionary (Japanese) is still listed as active in the MCP registry. We last reached this channel on 23 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://shiritori.omikuji.dev/mcp
- Website: https://shiritori.omikuji.dev/ai/
- Changelog RSS feed: https://verifymcp.io/servers/dev-omikuji-shiritori/shiritori.xml
- Changelog JSON feed: https://verifymcp.io/servers/dev-omikuji-shiritori/shiritori.json
- HTML version of this page: https://verifymcp.io/servers/dev-omikuji-shiritori/shiritori