Logeionicon 🏛️

Ancient Greek lexical tools for Claude and other AI assistants — powered by Logeion

Logeionicon is a Model Context Protocol (MCP) server that gives AI assistants real-time access to the world's finest Ancient Greek dictionaries, including the Liddell-Scott-Jones (LSJ), via the University of Chicago's Logeion database. Look up any Greek word, parse inflected forms, and build a personal vocabulary collection — all without leaving your AI conversation.

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Features

• lookup — Full dictionary entries from LSJ and 8 other lexica, with auto-lemmatization of inflected forms
• analyze — Morphological parsing of Greek words: lemma, part of speech, case/number/gender or tense/mood/voice
• favorites — A persistent personal Greek dictionary: save, tag, search, and manage words across sessions

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Supported Dictionaries

Key	Dictionary	Language
LSJ	Liddell-Scott-Jones Greek-English Lexicon	English
MiddleLiddell	Middle Liddell (abridged)	English
Autenrieth	Autenrieth Homeric Dictionary	English
Cunliffe	Cunliffe Lexicon of the Homeric Dialect	English
Slater	Slater Lexicon to Pindar	English
AbbottSmith	Abbott-Smith NT Greek Lexicon	English
DGE	Diccionario Griego-Español	Spanish → translated
Bailly	Bailly Dictionnaire grec-français	French → translated
BetantLexNT	Betant Lexicon NT	English

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Holonic Format

Logeionicon returns definitions in a compact holonic format designed for AI contexts — citations stripped, senses separated by periods:

. ψυχή [psu.chē]: life, vital force. ghost, departed spirit. soul, principle of movement.
. λόγος [lo.gos]: word, speech. reason, argument. ratio, proportion.
. ἀρετή [a.re.tē]: excellence, goodness. courage, valour. virtue, moral excellence.

Use format="full" for the complete raw LSJ entry.

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Requirements

• Python 3.8+
• Claude Desktop (or any MCP-compatible client)

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Installation

1. Clone the repository

git clone https://github.com/Corykidios/logeionicon_mcp.git
cd logeionicon_mcp

2. Install dependencies

pip install -r requirements.txt

3. Configure Claude Desktop

Open your Claude Desktop config file:

• Windows: %APPDATA%\Claude\claude_desktop_config.json
• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

Add Logeionicon to the mcpServers block:

{
  "mcpServers": {
    "logeionicon": {
      "command": "python",
      "args": ["/absolute/path/to/logeionicon_mcp/logeionicon.py"]
    }
  }
}

Replace /absolute/path/to/logeionicon_mcp/ with the actual path where you cloned the repo.

4. Restart Claude Desktop

Fully quit Claude Desktop (including from the system tray), then reopen it. You should see Logeionicon available in the tools menu.

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Usage

Once installed, just talk to Claude naturally. Examples:

"Look up ἀρετή in the LSJ"

"What does λύουσι parse as?"

"Add ψυχή to my favorites with the tag 'philosophy'"

"Show me all my favorites tagged 'homer'"

"What are some Greek words for love?"

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Tool Reference

lookup(word, direction, sources, format)

Look up a Greek word (or search for Greek words matching an English concept).

Parameter	Type	Default	Description
word	string	required	Unicode Greek word or English search term
direction	"greek" | "english"	"greek"	Greek → definitions, or English → Greek
sources	list	["LSJ"]	Which dictionaries to query (see table above, or "all")
format	"holonic" | "full"	"holonic"	Compressed summary or full entry

Examples:

lookup("ἀρετή")
lookup("virtue", direction="english")
lookup("λόγος", sources=["LSJ", "Bailly"], format="full")

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analyze(text)

Parse one or more Greek words morphologically.

Parameter	Type	Description
text	string	One or more Unicode Greek words (space-separated)

Returns per word: lemma, part of speech, morphological features (case, number, gender, tense, mood, voice), and a holonic definition of the lemma.

Examples:

analyze("λύουσι")
analyze("τὴν ψυχὴν τοῦ ἀνθρώπου")

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favorites(action, word, tags, query)

Manage your personal Greek dictionary. Data persists locally in favorites.json.

Action	Description	Required params
add	Save a word	word
remove	Delete a word	word
tag	Add tags to a word	word, tags
untag	Remove tags	word, tags
list	List saved words (optionally filter by tag)	—
search	Full-text search across words and definitions	query
tags	Show all tags in use	—
info	Show full record for a word	word

Examples:

favorites(action="add", word="ἀρετή", tags=["ethics", "plato"])
favorites(action="list", tags=["homer"])
favorites(action="search", query="courage")

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How It Works

Logeionicon talks to the Logeion API maintained by the University of Chicago. No local database is required — all dictionary data is fetched live. Morphological parsing uses Logeion's own /find endpoint, which draws on the Perseus Morpheus engine under the hood.

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Project Structure

logeionicon_mcp/
├── logeionicon.py      # MCP server — tool definitions and entry point
├── api.py              # Logeion HTTP client
├── morphology.py       # Lemmatization and morphological parsing
├── favorites.py        # Personal dictionary CRUD + JSON storage
├── format.py           # Holonic definition renderer + Greek syllabifier
├── requirements.txt
├── favorites.json      # Auto-created; gitignored
└── README.md

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Acknowledgements

• Logeion — University of Chicago's extraordinary Greek and Latin lexical resource
• LSJ — Liddell, Scott, Jones A Greek-English Lexicon, the gold standard since 1843
• Inspired by philipaidanbooth/Logeion-mcp-server

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License

MIT