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Outbox MCP Server

Name: Outbox
Author: dev.out-box

API key required

Publish and manage HTML pages in your agents-first Outbox library from any MCP client.

To add Outbox to Claude, run the install command below or copy the ready-made config for Claude Code, Claude Desktop, Cursor and VS Code further down. Restart your client after adding it and its tools show up in your next conversation. It needs 7 environment variables, listed below.

Install

npx -y @out-box/mcp@0.3.1

Environment variables

OUTBOX_API_KEYSet in your MCP config

OUTBOX_USERSet in your MCP config

OUTBOX_RCSet in your MCP config

OUTBOX_API_BASESet in your MCP config

OUTBOX_SITE_BASESet in your MCP config

OUTBOX_TOOLSETSSet in your MCP config

OUTBOX_FILES_DIRSet in your MCP config

Install with your client

Terminal

claude mcp add outbox --env OUTBOX_API_KEY=<YOUR_OUTBOX_API_KEY> --env OUTBOX_USER=<YOUR_OUTBOX_USER> --env OUTBOX_RC=<YOUR_OUTBOX_RC> --env OUTBOX_API_BASE=<YOUR_OUTBOX_API_BASE> --env OUTBOX_SITE_BASE=<YOUR_OUTBOX_SITE_BASE> --env OUTBOX_TOOLSETS=<YOUR_OUTBOX_TOOLSETS> --env OUTBOX_FILES_DIR=<YOUR_OUTBOX_FILES_DIR> -- npx -y @out-box/mcp@0.3.1

Run this in a terminal to add the server to Claude Code.

What this does

Outbox exposes a set of tools to Claude over the Model Context Protocol. After you add it to claude_desktop_config.json (snippet above) and restart Claude Desktop, those tools become callable inside any conversation.

Requirements

This server needs the following environment variables to be set before it can run:

OUTBOX_API_KEY
OUTBOX_USER
OUTBOX_RC
OUTBOX_API_BASE
OUTBOX_SITE_BASE
OUTBOX_TOOLSETS
OUTBOX_FILES_DIR

Set these via the env object in your MCP config (see claude_desktop_config.json snippet above).

Frequently asked questions

How do I install Outbox?

Run the Claude Code command in the install section to add Outbox to Claude Code, or copy the ready-made config for your client from the install section on this page. Restart your client afterwards and the tools appear in your next conversation.

Which clients work with Outbox?

This page carries setup and config for Claude Code, Claude Desktop, Cursor and VS Code. Any other MCP client that accepts a standard server config can connect to Outbox as well.

Does Outbox need an API key?

Yes. Before it can run, set these environment variables: OUTBOX_API_KEY, OUTBOX_USER, OUTBOX_RC, OUTBOX_API_BASE, OUTBOX_SITE_BASE, OUTBOX_TOOLSETS, OUTBOX_FILES_DIR. They go in the env block of your MCP config.

Imported from the Official MCP Registry. The details above come from the registry entry; the maker can claim this listing to correct them, add docs, and see its traffic.

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