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Datamuse MCP server

by lacausecrypto·io.github.lacausecrypto/datamuse-mcp·v1.0.0·2 stars
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MCP server for Datamuse word-finding API

B82/100grade B
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Safety scan
B82/100

full report

Adoption
New

2 stars33 downloads/wk

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Datamuse MCP tools (10)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

  • autocomplete

    Get word suggestions for a partial input. Includes intelligent spelling correction and phonetic fallbacks when exact prefix matches aren't found.

  • find_adjectives_for_noun

    Find adjectives commonly used to describe a noun. Based on Google Books Ngrams data. Example: 'ocean' → deep, blue, vast, pacific.

  • find_antonyms

    Find antonyms (words with opposite meanings) for a given word using WordNet relationships.

  • find_by_pattern

    Find words matching a spelling pattern with wildcards. Use '*' for any number of characters, '?' for exactly one character. Examples: 't??k' matches talk/tank/tick, 'un*able' matches unable/unforgettable.

  • find_nouns_for_adjective

    Find nouns commonly described by an adjective. Based on Google Books Ngrams data. Example: 'yellow' → sun, light, fever, pages.

  • find_related_words

    Find words semantically related to the input. Can find words by meaning similarity, statistical associations (triggers), or hierarchical relationships (hypernyms/hyponyms).

  • find_rhymes

    Find words that rhyme with a given word. Supports perfect rhymes and near-rhymes. Useful for poetry, songwriting, and creative writing.

  • find_similar_sounding

    Find words that sound similar to the input. Useful for spelling correction, finding homophones, creating puns, or phonetic matching.

  • find_synonyms

    Find synonyms (words with similar meanings) for a given word. Uses WordNet and corpus data. Optionally bias results toward a specific topic.

  • get_word_info

    Get detailed information about a word including: definitions, part of speech, syllable count, pronunciation (IPA), and usage frequency.

Public scan report

scanner v0.1.9 · 2026-09-27 · same rubric, same numbers if you re-run it

no findings
  • Code scan15 source files scanned25/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitylocal package, no credentials required12/15
  • Maintenancelast push 166 days ago8/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Overall 82/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Datamuse MCP compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
82/100
higher than 63% of 48,255 servers
Tools
10
the typical server has 7
Tools that change things
0%
typical: 0%. Fewer write tools means less an agent can break
GitHub stars
2
more than 75% of 28,688 servers
Downloads a week
33
more than 22% of 12,191 servers with a package

What its tools let an agent do: 10 read

Install Datamuse MCP in Claude Code, Cursor or VS Code

Runs npx -y datamuse-mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add datamuse-mcp -- npx -y datamuse-mcp
Add to Cursor

What the publisher says

From the Datamuse MCP repository's README, as published. We do not edit it. Read it on GitHub

datamuse-mcp

MCP server for the Datamuse API (word search, rhymes, synonyms, and more).

This project is open source, free to use, and licensed under MIT.

About

datamuse-mcp is a local stdio MCP server that wraps Datamuse endpoints into validated MCP tools. It is designed for practical word-finding use cases in assistants and clients that support MCP.

Purpose

This server provides simple MCP tools to:

  • find synonyms, antonyms, and rhymes;
  • run autocomplete;
  • fetch lexical details (definitions, POS, syllables, pronunciation, frequency);
  • search by spelling pattern (*, ?) or phonetic similarity.

Requirements

  • Node.js >= 18
  • npm

Install

npm install

Development

npm run dev

Build & run

npm run build
npm start

Manual JSON-RPC checks

# List tools
echo '{"jsonrpc":"2.0","id":1,"method":"tools/list"}' | node dist/index.js

# Call a tool
echo '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"find_synonyms","arguments":{"word":"happy"}}}' | node dist/index.js

More tool examples

{ "tool": "find_antonyms", "arguments": { "word": "happy", "max": 10 } }
{ "tool": "find_rhymes", "arguments": { "word": "love", "type": "perfect", "max": 20 } }
{ "tool": "find_similar_sounding", "arguments": { "text": "definately", "max": 15 } }
{ "tool": "find_by_pattern", "arguments": { "pattern": "s??r?", "meaning_hint": "celestial", "max": 25 } }
{ "tool": "find_related_words", "arguments": { "word": "music", "relation_type": "triggers", "max": 15 } }
{ "tool": "get_word_info", "arguments": { "word": "serendipity" } }
{ "tool": "autocomplete", "arguments": { "prefix": "astro", "max": 10 } }

Claude Desktop configuration

Add this to claudedesktopconfig.json:

{
  "mcpServers": {
    "datamuse": {
      "command": "node",
      "args": ["/absolute/path/to/datamuse-mcp/dist/index.js"]
    }
  }
}

Exposed tools

  • find_synonyms
  • find_antonyms
  • find_rhymes
  • findsimilarsounding
  • findbypattern
  • findrelatedwords
  • findadjectivesfor_noun
  • findnounsfor_adjective
  • getwordinfo
  • autocomplete

Security and limits

  • The server runs over stdio (local usage recommended).
  • Outbound requests go to https://api.datamuse.com.
  • A local in-memory cache is used (5-minute TTL), with no disk persistence.
  • Datamuse may enforce request limits/quotas.

Publishing

For npm and MCP Registry deployment, see PUBLISHING.md.

Contributing

See CONTRIBUTING.md.

License

MIT — see LICENSE.

Nothing above is checked by us. What we check is on the safety report.

Datamuse MCP: common questions

Is Datamuse MCP server safe?
Mostly: it is graded B (82/100). Read the Datamuse MCP safety report
How do I install Datamuse MCP?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Datamuse MCP need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Datamuse MCP maintained?
The last commit was 203 days ago (2026-04-14). The latest release is v1.0.0.
How does Datamuse MCP compare with other MCP servers?
safety score 82/100 (higher than 63% of 48,255 servers); tools 10 (the typical server has 7); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

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