MCP server

What3words

io.github.pipeworx-io/what3words

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

what3words MCP — 3-word grid geocoding

Website Source

At a glance

Type

MCP server

Publisher

pipeworx.io (verified by the MCP Registry)

Status

Working at last check

Tools

46

Token cost

About 26,848 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http what3words https://gateway.pipeworx.io/what3words/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.what3words]
url = "https://gateway.pipeworx.io/what3words/mcp"

Gemini CLI

{"mcpServers":{"what3words":{"httpUrl":"https://gateway.pipeworx.io/what3words/mcp"}}}

Cursor

{"mcpServers":{"what3words":{"url":"https://gateway.pipeworx.io/what3words/mcp"}}}

VS Code

{"servers":{"what3words":{"type":"http","url":"https://gateway.pipeworx.io/what3words/mcp"}}}

Antigravity

agy mcp add what3words https://gateway.pipeworx.io/what3words/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"what3words","server_url":"https://gateway.pipeworx.io/what3words/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"what3words","server_url":"https://gateway.pipeworx.io/what3words/mcp"}

Tools

• autosuggest ~235 tokens
  Given a partial / mistyped 3-word input, return ranked suggestions. Optional focus point biases results toward proximity.
• coords_to_words ~160 tokens
  Convert a lat/lon to a what3words 3-word address. Defaults to English; pass a 2-letter language code for other languages.
• list_languages ~50 tokens
  Supported languages for 3-word output (code + name).
• words_to_coords ~100 tokens
  Convert a 3-word address ("filled.count.soap") to a lat/lon centre + 3m×3m bounding box.

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