Free Dictionary word API

One Free Dictionary dictionary entry: phonetics, audio, parts of speech, definitions, synonyms and antonyms.

Ask your agent

“Call dictionary/word with word moon and summarize what comes back.”

Works in any MCP client connected to https://data.openkrill.app/mcp. Install in one line.

Path: dictionary/word
MCP tool: call_endpoint
Credits: 1
Cache: 30 min

Parameters

wordstring, required	One word, such as moon
languagestring, optional	Two-letter language code, default en

Response

data.resources[] uses the same keys as every other platform: author, engagement, metadata, with Free Dictionary-only fields under extras. A failed upstream call is never billed.

MCP tool call

{
  "name": "call_endpoint",
  "arguments": {
    "path": "dictionary/word",
    "params": {
      "word": "moon"
    }
  }
}

curl

curl "https://data.openkrill.app/v1/dictionary/word?word=moon" \
  -H "x-api-key: YOUR_API_KEY"

Response

{
  "success": true,
  "platform": "dictionary",
  "endpoint": "dictionary/word",
  "data": {
    "resources": [
      { "id": …, "title": …, "text": …, "url": …,
        "author": {…}, "engagement": {…},
        "metadata": {…}, "extras": {…} }
    ]
  },
  "credits_used": 1,
  "cached": false
}