Datamuse

API

Free word-finding query engine API for language tools

Overview

Datamuse API is a RESTful word-finding engine that returns JSON responses for queries like synonyms, rhymes, conceptually related terms, and spelling suggestions. Key endpoints include /words with parameters such as rel_syn (synonyms), rel_rhy (rhymes), rel_trg (related meaning), and sp (spelling hints). Ideal use cases: Writing assistants, educational apps, crossword solvers, language learning tools, and content creation platforms. It requires no authentication, making integration quick and accessible for developers.

Example Integration (JavaScript)

script.js JS


fetch('https://www.datamuse.com/api/')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful API interface
JSON response format
No authentication required
Supports multiple word relations (synonyms, rhymes, etc.)
Spelling suggestion capability
Open source query engine

Frequently Asked Questions

? Is Datamuse free to use?

Yes, the Datamuse API is completely free with no subscription fees or usage costs.

? Does it require an API Key?

No, the Datamuse API does not require any authentication or API key for access.

? What is the response format?

The Datamuse API returns responses exclusively in JSON format, which is easy to parse for most applications.

Top Alternatives

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Tool Info

Pricing Free

Category Open Source Projects

Platform Public API

Pros

⊕ No API key needed for access
⊕ Completely free to use
⊕ Versatile word-finding parameters
⊕ Simple and intuitive endpoint structure
⊕ Well-documented usage guidelines

Cons

⊖ No official service level agreement (SLA)
⊖ Limited advanced linguistic features
⊖ Only JSON format available