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AgentUtility Thesaurus — Synonyms & Related Words Lookup
x402
AgentUtility Thesaurus — Synonyms & Related Words Lookup is a paid API for AI agents from x402.agentutility.ai, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-27).
Returns synonyms, antonyms, or related words for a given word using the Datamuse API, payable in USDC via x402
Price / call$0.005
Success—
StatusUnknown
How this service works
817 pay-per-call APIs for AI agents. Every endpoint is POST /<name> and is payable in USDC over x402 on Base and Solana — no signup, no API key, just pay-per-call. GET https://x402.agentutility.ai/ returns the same catalog as machine-readable JSON.
Output
A JSON object containing the queried word, the mode used (e.g. synonyms), the underlying data source (Datamuse), and an array of related words each with a similarity score — e.g. [{"word":"felicitous","score":53634},{"word":"glad","score":38273}].
Example use cases
Example prompt
“What are some synonyms for the word 'happy'? Give me a ranked list of words that mean the same thing.”
Technical details
Endpoint
POSThttps://x402.agentutility.ai/thesaurus?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a ranked list of synonyms, antonyms, or related words for a specific word — especially in writing assistance, content generation, or NLP enrichment workflows that need a lightweight, pay-per-call API rather than a full subscription to a thesaurus service.
Side effects
- Unknown or misspelled word returns empty results array
- Invalid mode value returns an error
- Missing required 'word' field returns a 400-level error
- Network or upstream Datamuse API failure returns a 5xx error
- Payment not settled via x402 returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"mode": "synonyms",
"word": "happy",
"source": "https://www.datamuse.com",
"results": [
{
"word": "felicitous",
"score": 53634
},
{
"word": "glad",
"score": 38273
},
{
"word": "joyful",
"score": 31250
},
{
"word": "cheerful",
"score": 24611
}
]
}
}Tags
x402
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