This is not our API. This repository is an independent, third-party profile of a company's publicly available API surface, maintained by API Evangelist. API Evangelist does not operate, host, resell, or support this company's APIs, and is not affiliated with or endorsed by the company unless stated on the profile.
Where the information came from. Everything here is assembled from material a member of the public can reach with a browser and no credentials — the company's own website, developer portal and documentation, the specifications it publishes for public use (OpenAPI, AsyncAPI, JSON Schema,
apis.json,llms.txtand similar), its public repositories, and its public status, pricing and changelog pages. Nothing here is obtained by breaching a system, defeating an access control, or using credentials of any kind.The rating is an independent assessment. The Kin Score and Agent Readiness rating are independently calculated scores of a company's public API artifacts, produced by API Evangelist against a published rubric. They are not certifications, endorsements, security assessments, or audits, and they score published artifacts — not the quality, safety, or security of the software.
Corrections, re-scores, and removal are free. No partnership, contract, or purchase is required, and you do not need to justify the request.
- Something wrong? Open an issue on this repository, or email info@apievangelist.com.
- Published something new? Ask for a re-score and we will re-run the rating.
- Want the listing taken down? Say so and we will honor it. The profile is reduced to your company name, a factual description, and a link to your own site, and the company is recorded as unrated — never scored zero for having asked.
Response times. Acknowledgement within one business day; removal or restriction within two business days; corrections and re-scores within five business days.
On a security or compliance team? Email info@apievangelist.com with security in the subject line and you will get a person, not a form. We will tell you exactly which public URLs this profile was built from so your team can see the same surface we did, and we will take the listing down on request while you work through it.
Full detail: Where this data comes from
Datamuse operates a word-finding query engine and lexical search service for developers, educators, and creative-writing applications. The Datamuse API exposes a /words endpoint that finds words matching a rich combination of semantic, phonetic, orthographic, and vocabulary constraints (means-like, sounds-like, spelled-like, synonyms, antonyms, hypernyms, meronyms, triggers, rhymes, homophones, and more) plus a /sug autocomplete endpoint. Free for non-commercial use up to 100,000 requests per day with no API key required; commercial use, custom vocabularies, and higher rate limits are available via a paid commercial agreement. Datamuse also runs OneLook, OneLook Thesaurus, RhymeZone, Rimar.io, and CivicSearch — consumer-facing word search tools built on the same lexical infrastructure.
APIs.json: https://www.datamuse.com/api/
- Word Finding
- Lexical Search
- Natural Language
- Vocabulary
- Synonyms
- Antonyms
- Rhymes
- Phonetics
- Semantic Search
- Reverse Dictionary
- Autocomplete
- Wordplay
- Creative Writing
- Vocabulary Apps
- Word Games
- Linguistics
- Open Source Projects
- Public APIs
- Created: 2026-05-28
- Modified: 2026-05-29
The Datamuse REST API exposes two operations covering word-finding (/words) and autocomplete suggestions (/sug). The /words endpoint accepts a rich combination of constraint parameters — semantic (ml, rel_syn, rel_ant, rel_trg, rel_spc, rel_gen, rel_com, rel_par, rel_jja, rel_jjb), phonetic (sl, rel_rhy, rel_nry, rel_hom, rel_cns), orthographic (sp with wildcards), and vocabulary (v=en|es) — plus ranking hints (topics, lc, rc) and result controls (max, md, qe, ipa). No authentication required for free non-commercial use up to 100k requests/day.
- Human URL: https://www.datamuse.com/api/
- Base URL:
https://api.datamuse.com
- Word Finding
- Lexical Search
- Natural Language
- Documentation
- API Reference
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- JSON Schema — JSON Schema
- JSON Schema — JSON Schema
- JSON Structure
- JSON Structure
- J S O N- L D
- Example
- Example
- Rate Limits
- Pricing
- Website
- Documentation
- API Reference
- Pricing
- Terms of Service
- Privacy Policy
- Support
- Spectral Rules
- Vocabulary
- Plans
- Rate Limits
- Fin Ops
- Public APIs Listing
- SDK
- SDK
- SDK
- SDK
- SDK
- SDK
- SDK
- SDK
- SDK
- Tools
- Tools
- Tools
- Tools
- Tools
- Features
- Use Cases
- Integrations
- Solutions
FN: Kin Lane Email: kin@apievangelist.com