# Datamuse Hyponyms Lookup

> Datamuse Hyponyms Lookup is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Returns a list of more specific words (hyponyms) for a given input word using the Datamuse lexical API.

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/s/datamuse-hyponyms
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/datamuse-hyponyms-lookup-38bdc9d1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kbM5geoduI-hVeNuS3R3d

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability datamuse-hyponyms-lookup-38bdc9d1 -d '<json body>'
```

Example prompt: Can you find more specific words for 'vehicle' — like words that are a type of vehicle?

## When to prefer this

Use this endpoint when you need to find more specific or narrower terms for a given word — for vocabulary enrichment, ontology building, NLP pipelines, or helping users discover precise terminology. Prefer this over a general thesaurus when specifically looking for hyponyms (is-a relationships) rather than synonyms or related words.

## Known failure modes

- Missing 'word' parameter returns an error or empty result
- Obscure or misspelled words may return no hyponyms
- Very abstract or ambiguous words may return unexpected or sparse results
- Non-English words may not be supported

## How this service works

More specific words (hyponyms) for a given word (param: word). Query: ?word= Returns JSON.

## Output

A JSON array of words that are more specific (hyponyms) of the input word — e.g., for 'dog', results might include 'poodle', 'beagle', 'terrier'.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/datamuse-hyponyms-lookup-38bdc9d1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from clonecho.builda.company](https://www.zero.xyz/host/clonecho.builda.company/llms.txt)