# AgentsToolsHub Dictionary Lookup

> AgentsToolsHub Dictionary Lookup is a paid API for AI agents from agentstoolshub.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-17).

Looks up an English word and returns part-of-speech definitions with usage examples, IPA phonetics, pronunciation audio, and synonym/antonym lists via the free Dictionary API.

## Facts

- Endpoint: GET https://agentstoolshub.com/api/v1/live/dictionary?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentstoolshub-dictionary-lookup-34190049
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rNuNOt8WAwyl8Qga4ewuM

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 agentstoolshub-dictionary-lookup-34190049
```

Example prompt: What does 'ephemeral' mean? Can you look it up and give me the definition, how it's pronounced in IPA, and a few synonyms?

## When to prefer this

Choose this endpoint when an agent needs accurate, quotable dictionary definitions, IPA phonetics, or synonym/antonym lists for English words without hallucinating them. It is ideal over general LLM knowledge when verbatim accuracy and sourced definitions are required, such as in educational, editorial, or language-learning contexts.

## Known failure modes

- Word not found in the dictionary returns a 404 or empty results array
- Non-English or misspelled words may return no results
- Rare or highly technical words may have missing audio or limited synonyms
- Network timeout if the upstream Dictionary API is unavailable

## How this service works

Look up any English word: part-of-speech definitions with usage examples, IPA phonetics, pronunciation audio when available, and synonym/antonym lists. Live from the free Dictionary API — definitions agents can quote verbatim instead of inventing. Use this when an agent needs to definitions, phonetics and synonyms for a word.

## Output

Returns an array of dictionary entries for the queried word, each containing: phonetic transcription (IPA), a URL to a pronunciation audio file when available, and an array of meanings grouped by part of speech — each meaning includes a definition, usage example sentences, and lists of synonyms and antonyms.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "word"
     ],
     "properties": {
      "word": {
       "type": "string",
       "description": "Word"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentstoolshub-dictionary-lookup-34190049/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentstoolshub.com](https://www.zero.xyz/host/agentstoolshub.com/llms.txt)