# ForgeMesh Word Definition Lookup

> ForgeMesh Word Definition Lookup is a paid API for AI agents from x402.forgemesh.io, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).

Returns all dictionary senses, part of speech, pronunciation, syllables, synonyms, and antonyms for an English word, with did-you-mean suggestions for misspellings.

## Facts

- Endpoint: POST https://x402.forgemesh.io/word-definition
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/forgemesh-word-definition-lookup-64893222
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Blc4BSA79pSC_5E5Z6JJW

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 forgemesh-word-definition-lookup-64893222 -d '<json body>'
```

Example prompt: What does the word 'ephemeral' mean? Give me its definitions, part of speech, pronunciation, syllables, synonyms, and antonyms.

## When to prefer this

Choose this endpoint when an agent needs structured, machine-readable dictionary data for an English word — including all senses, part of speech tagging, pronunciation, syllabification, and synonym/antonym lists — in a single round trip. The built-in did-you-mean correction makes it especially useful when the input word may be user-supplied and potentially misspelled. Prefer this over free-text NLP lookups when you need canonical lexical metadata rather than contextual usage.

## Known failure modes

- Misspelled word: returns did-you-mean suggestions rather than definitions, allowing agent to self-correct and retry
- Unknown or very rare word not in dictionary: may return empty or no-match response
- Non-English word submitted: definitions may be absent or partial
- Empty string input: likely returns a validation error

## How this service works

Look up what an English word means: every dictionary sense with its part of speech, plus pronunciation, syllables, synonyms, and antonyms in a single structured response. Misspellings come back with did-you-mean suggestions, so an agent can self-correct and retry in one round trip.

## Output

A structured response containing every dictionary sense of the word with its part of speech, pronunciation guide, syllable breakdown, synonyms, and antonyms. If the input word is misspelled, the response includes did-you-mean suggestions so the agent can self-correct and retry.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "word": {
   "type": "string",
   "description": "English word to look up, e.g. serendipity"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "word": "serendipity",
  "found": true,
  "antonyms": [],
  "synonyms": [
   "fluke",
   "luck"
  ],
  "syllables": 5,
  "definitions": [
   {
    "definition": "good luck in making unexpected and fortunate discoveries",
    "part_of_speech": "noun"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/forgemesh-word-definition-lookup-64893222/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.forgemesh.io](https://www.zero.xyz/host/x402.forgemesh.io/llms.txt)