# Datamuse Word Autocomplete

> Datamuse Word Autocomplete is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Returns word autocomplete suggestions for a given spelling prefix using the Datamuse lexical API

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/s/datamuse-autocomplete
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/datamuse-word-autocomplete-5864816f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pC6Qwm17cS2faS0wIm--v

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-word-autocomplete-5864816f -d '<json body>'
```

Example prompt: Can you give me word autocomplete suggestions for the prefix 'inter' — I'm building a search box and need to show users words that start with those letters?

## When to prefer this

Use this endpoint when you need server-side word autocomplete suggestions based on a spelling prefix, especially for search boxes, text editors, or NLP pipelines. Prefer this over local dictionary lookups when you want Datamuse's curated, frequency-weighted word list without hosting your own lexical database.

## Known failure modes

- Missing 'word' query parameter returns error or empty result
- Very short or single-character prefix may return too many or irrelevant results
- Non-alphabetic or special character prefixes may return empty results
- Rate limiting or payment failure (x402) if USDC balance is insufficient

## How this service works

Word autocomplete suggestions for a partial spelling prefix (param: word). Query: ?word= Returns JSON.

## Output

A JSON array of word suggestions that match the provided spelling prefix, powered by Datamuse's lexical database, ordered by relevance or frequency.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/datamuse-word-autocomplete-5864816f/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)