MCP server providing 10 word-finding tools powered by the Datamuse API.

Integration with AI Clients

VS Code (GitHub Copilot / Copilot Chat)

Add to your VS Code settings JSON (.vscode/mcp.json or user settings.json):

{
  "mcp": {
    "servers": {
      "datamuse": {
        "command": "node",
        "args": ["/absolute/path/to/datamuse-mcp-server/packages/datamuse-server/dist/index.js"],
        "env": {
          "DATAMUSE_MAX_RESULTS": "50",
          "DATAMUSE_TIMEOUT_MS": "10000"
        }
      }
    }
  }
}

Or if installed globally via npm:

{
  "mcp": {
    "servers": {
      "datamuse": {
        "command": "npx",
        "args": ["datamuse-mcp-server"]
      }
    }
  }
}

Claude Desktop

Add to your Claude Desktop config file (claude_desktop_config.json):

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

{
  "mcpServers": {
    "datamuse": {
      "command": "node",
      "args": ["/absolute/path/to/datamuse-mcp-server/packages/datamuse-server/dist/index.js"],
      "env": {
        "DATAMUSE_MAX_RESULTS": "50",
        "DATAMUSE_TIMEOUT_MS": "10000"
      }
    }
  }
}

Or if installed globally via npm:

{
  "mcpServers": {
    "datamuse": {
      "command": "npx",
      "args": ["datamuse-mcp-server"]
    }
  }
}

Tools

datamuse_rhymes

Find perfect rhyming words.

Input:  { word: "time", limit?: 20 }
Output: dime, lime, crime, rhyme, climb, paradigm, sublime...

datamuse_near_rhymes

Find approximate/near rhymes.

Input:  { word: "orange", limit?: 20 }
Output: arrange, strange, range...

datamuse_synonyms

Find synonyms.

Input:  { word: "happy", limit?: 20 }
Output: joyful, glad, pleased, cheerful...

datamuse_antonyms

Find words with opposite meaning.

Input:  { word: "happy", limit?: 20 }
Output: sad, unhappy, miserable...

datamuse_related

Find related/associated words with specific relation types.

Input:  { word: "ocean", relation?: "triggers"|"followers"|"predecessors"|"kind_of"|"part_of"|"comprises", limit?: 20 }
Output: (triggers) beach, waves, salt, water...

datamuse_sounds_like

Find words that sound similar (homophones).

Input:  { word: "their", limit?: 20 }
Output: there, they're...

datamuse_spelled_like

Find words matching a spelling pattern (? = single char, * = multi).

Input:  { pattern: "ca?", limit?: 20 }
Output: cat, car, cap, can, cab...

datamuse_autocomplete

Autocomplete suggestions for a prefix.

Input:  { prefix: "hel", limit?: 10 }
Output: hello, help, helicopter, helmet...

datamuse_word_info

Get definitions, syllables, frequency, pronunciation.

Input:  { word: "serendipity" }
Output: (noun) good luck in making unexpected discoveries | 5 syllables | 4.2/million

datamuse_creative_find

Multi-constraint word finding — combine meaning, sound, spelling, and topic.

Input:  { meaningLike?: "ocean", soundsLike?: "see", spelledLike?: "s*", topic?: "nature", limit?: 20 }
Output: sea, surf, shore...

Datamuse API Mapping

| Tool | API Parameter | |------|---------------| | rhymes | rel_rhy | | near_rhymes | rel_nry | | synonyms | rel_syn | | antonyms | rel_ant | | related (triggers) | rel_trg | | related (followers) | lc | | related (predecessors) | rc | | related (kind_of) | rel_spc | | related (part_of) | rel_com | | related (comprises) | rel_par | | sounds_like | sl | | spelled_like | sp | | autocomplete | /sug?s= | | word_info | sp + md=dpsrf + ipa=1 | | creative_find | ml, sl, sp, topics |

Usage

# Run directly
node dist/index.js

# Or via npx
npx datamuse-mcp-server

Environment Variables

| Variable | Default | Description | |----------|---------|-------------| | DATAMUSE_BASE_URL | https://api.datamuse.com | API endpoint | | DATAMUSE_MAX_RESULTS | 50 | Max results per query | | DATAMUSE_TIMEOUT_MS | 10000 | Request timeout |

Usage

Ask questions like:

• "What rhymes with orange?"
• "Find synonyms for happy"
• "What words sound like flower?"
• "Autocomplete the prefix 'ser'"
• words with a meaning similar to ringing in the ears
• words related to duck that start with the letter b
• words related to spoon that end with the letter a
• words that sound like jirraf
• words that start with t, end in k, and have two letters in between
• words that are spelled similarly to hipopatamus
• adjectives that are often used to describe ocean
• adjectives describing ocean sorted by how related they are to temperature
• nouns that are often described by the adjective yellow
• words that often follow "drink" in a sentence, that start with the letter w
• words that are triggered by (strongly associated with) the word "cow"
• suggestions for the user if they have typed in rawand so far