# Saylor Innovations Dictionary — Synonyms, Antonyms, Rhymes & Related Words

> Saylor Innovations Dictionary — Synonyms, Antonyms, Rhymes & Related Words is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-30).

Returns synonyms, antonyms, rhymes, and other related words for a given English word

## Facts

- Endpoint: GET https://saylorinnovations.com/api/words/related/happy?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-dictionary-synonyms-antonyms-rhymes-related-words-01cd1d86
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XhlEp4-X1XiIrNMdE1d4L

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 saylor-innovations-dictionary-synonyms-antonyms-rhymes-related-words-01cd1d86
```

Example prompt: What are synonyms, antonyms, and rhymes for the word 'happy'? I want to see all types of related words.

## When to prefer this

Choose this endpoint when you need structured thesaurus data — synonyms, antonyms, or rhymes — for a specific English word in a machine-readable format. It is well-suited for vocabulary enrichment, content generation assistance, creative writing tools, quiz generators, or NLP pipelines that need lexical relationships. Prefer this over general LLM-based word suggestions when you want consistent, dictionary-backed results at low cost per lookup.

## Known failure modes

- Word not found in dictionary — returns empty words array or 404
- Invalid or misspelled input word — may return no results
- Rate limiting or payment failure — returns 402 or 429 error
- Uncommon or highly specialized words may have sparse or no related words

## How this service works

Thesaurus: Synonyms, Antonyms, Rhymes & More. Thesaurus and word finder: synonyms, antonyms, rhymes, near rhymes, sound-alikes, homophones, means-like, adjectives for a noun, broader/narrower terms, with parts of speech and frequency (Datamuse).

## Output

Returns a JSON object containing the queried word and an array of related word objects, each including the related word and the type of relationship (e.g. synonym, antonym, rhyme). The response is structured with a 'word' field and a 'words' array, with an optional 'relation' field indicating the relationship type.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "POST",
      "PUT",
      "PATCH",
      "DELETE",
      "HEAD"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "word",
      "words"
     ],
     "properties": {
      "word": {
       "type": "string"
      },
      "words": {
       "type": "array",
       "items": {
        "type": "object"
       }
      },
      "relation": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-dictionary-synonyms-antonyms-rhymes-related-words-01cd1d86/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)