Merriam-Webster

liveReference

Merriam-Webster — authoritative American English dictionary definitions and thesaurus (synonyms/antonyms).

2tools
0msauth
free tier50 calls/day

Tools

define

Look up a word in the Merriam-Webster dictionary — the authoritative American English dictionary. Returns word definitions (short definitions), part of speech (noun, verb, adjective, etc.), pronunciat

No parameters required.

▶Try it
thesaurus

Look up a word in the Merriam-Webster thesaurus — the authoritative American English thesaurus. Returns synonyms and antonyms grouped by sense, along with part of speech (noun, verb, adjective, etc.)

No parameters required.

▶Try it

Test with curl

The gateway speaks JSON-RPC 2.0 over HTTP POST. You can test any pack directly from the terminal.

List available tools
bash
curl -X POST https://gateway.pipeworx.io/merriam_webster/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'
Call a tool
bash
curl -X POST https://gateway.pipeworx.io/merriam_webster/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"define","arguments":{}}}'

Use with the SDK

Install @pipeworx/sdk to call tools from any TypeScript/Node project.

TypeScript
import { Pipeworx } from '@pipeworx/sdk';
const px = new Pipeworx();
const result = await px.call("define", {});
ask_pipeworx
// Or ask in plain English:
const answer = await px.ask("merriam-webster — authoritative american english dictionary definitions and thesaurus (synonyms/antonyms)");