About multilingual-dictionary-mcp
multilingual-dictionary-mcp is an MCP server published by Eyalm321 in the RAG category: an MCP server for multilingual dictionary lookups with word relations such as synonyms, antonyms, and definitions, leveraging ConceptNet, Wiktionary, and Datamuse APIs.
The repository has 6 stars and 0 forks, with the last commit 5 months ago. Recent commit activity is the strongest signal that reported issues will get attention.
Install
git clone https://github.com/Eyalm321/multilingual-dictionary-mcpThis server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.
Tools (3)
dictionary_means_likeMultilingual "means approximately" via Numberbatch (works in any of the 78 covered languages)
Parameters not published.
dictionary_relatedSemantic neighbors via cosine similarity — much denser than ConceptNet RelatedTo
Parameters not published.
dictionary_semantic_neighborsExplicit embedding lookup with optional cross-lingual filter
Parameters not published.
Ask AI
Ask AI about multilingual-dictionary-mcp
Powered by Claude · Grounded in docs
Security checks
- ✓README presentThe repository ships documentation.
5 checks have not been run yet.
README
Multilingual Dictionary MCP
An offline-first MCP server for multilingual dictionary lookups — definitions, synonyms, antonyms, hypernyms, hyponyms, meronyms, translations, etymology, pronunciation, semantic neighbors, rhymes, and more — across 4,755 languages.
No third-party APIs. No rate limits. No outages. The server downloads its data from a CDN once on first run and never goes online again.
What's bundled
| Source | Size | What it covers |
|---|---|---|
| Wiktextract (Kaikki.org) | 6.6 GB | 10.5M dictionary entries across 4,755 languages — definitions, etymology, IPA, translations |
| ConceptNet 5.7 | 5.6 GB | 24.3M semantic edges across 80+ languages — Synonym, Antonym, IsA, PartOf, RelatedTo, UsedFor, CapableOf, AtLocation, DerivedFrom, EtymologicallyRelatedTo |
| Numberbatch embeddings | 3 GB | 9.16M concepts × 300d multilingual embeddings — semantic neighbors via cosine similarity |
| CMU Pronouncing Dictionary | 19 MB | English rhymes, soundalikes, autocomplete, spell patterns |
Total bundle: ~21 GB (medium profile, default).
One bundle, one download
The whole bundle ships in 6 artifacts. Total 5.4 GB on the wire (gzip-compressed where it helps), 15.6 GB on disk after extraction. Everything downloads on first run; no profiles, no opt-ins.
Installation
npm install -g multilingual-dictionary-mcp
Claude Desktop / Claude Code
{
"mcpServers": {
"multilingual-dictionary": {
"command": "npx",
"args": ["-y", "multilingual-dictionary-mcp"]
}
}
}
On first run, the server downloads its data bundle (~5.4 GB compressed → ~15.6 GB on disk) from multilingual-dictionary-mcp-data.nyc3.cdn.digitaloceanspaces.com into ~/.cache/multilingual-dictionary-mcp/ (overridable via MDM_DATA_DIR). Each artifact is gzip-decompressed during the stream and SHA-256 verified. Subsequent runs are instant.
Tools
Multilingual word relations (ConceptNet — 80+ languages)
dictionary_synonyms, dictionary_antonyms, dictionary_hypernyms, dictionary_hyponyms, dictionary_meronyms, dictionary_holonyms, dictionary_derived_from, dictionary_etymologically_related, dictionary_used_for, dictionary_capable_of, dictionary_at_location, dictionary_translate, dictionary_all_relations
Embedding-based semantic search (Numberbatch — 78 languages)
| Tool | What it does |
|---|---|
dictionary_related |
Semantic neighbors via cosine similarity — much denser than ConceptNet RelatedTo |
dictionary_semantic_neighbors |
Explicit embedding lookup with optional cross-lingual filter |
dictionary_means_like |
Multilingual "means approximately" via Numberbatch (works in any of the 78 covered languages) |
Definitions & etymology (Wiktextract — 4,755 languages)
| Tool | What it does |
|---|---|
dictionary_lookup |
Definitions + IPA + etymology grouped by language |
dictionary_summary |
Concatenated short definition |
dictionary_etymology |
Etymology text |
dictionary_pronunciation |
IPA pronunciations |
dictionary_search |
Prefix-search the corpus |
dictionary_random |
Random word entry |
English-specific (CMU Pronouncing Dictionary)
| Tool | What it does |
|---|---|
dictionary_rhymes |
Perfect or near rhymes |
dictionary_sounds_like |
Homophones / soundalikes |
dictionary_spelled_like |
Spelling pattern (? and * wildcards) |
dictionary_suggest |
Autocomplete prefix |
Examples
> What are the synonyms of "feliz" in Spanish?
[uses dictionary_synonyms with language: "es"]
> Translate "happiness" into Hebrew
[uses dictionary_translate with language: "en", targetLanguage: "he"]
> What's the etymology of "serendipity"?
[uses dictionary_etymology]
> Find words semantically similar to "café" across languages
[uses dictionary_semantic_neighbors]
> What rhymes with "orange"?
[uses dictionary_rhymes with perfect: false]
Development
npm install
npm run build
npm test # 42 tests, all run without local data
Source layout:
src/
├── index.ts # MCP server entry, blocks on first-run install
├── data/
│ ├── paths.ts # CDN base, profile selection, data dir
│ ├── installer.ts # First-run downloader + SHA-256 verification
│ └── local-store.ts # SQLite + Numberbatch matrix wrappers
└── tools/
├── relations.ts # 13 ConceptNet relation tools + 1 embedding tool
├── definitions.ts # 6 Wiktextract definition tools
└── english.ts # 5 CMU dict + Numberbatch tools
Total: 24 tools.
Building the data bundle yourself
The CDN ships official builds, but the entire pipeline is in data-pipeline/ — see its README. You can rebuild from upstream sources, ship to your own bucket, and override MDM_CDN_BASE.
CI / Release
- CI runs build + tests on Node 20 & 22 for every push and PR.
- Publish runs on GitHub Release publish, pushes to npm and GitHub Packages.
License
MIT © Eyalm321
README copy captured when this server was indexed; it may lag the repository. The original is authoritative.