Outbox MCP Server
by jonathanleiva15dev.out-box/mcpv0.3.1
Publish and manage HTML pages in your agents-first Outbox library from any MCP client.
context tax
needs auth
security
pending
cold start
pending
freshness
pending
Our reading of Outbox, from the data
Outbox is an MCP server from jonathanleiva15, listed in the official MCP Registry.
Its endpoint requires sign-in or an API key just to list tools, so we haven't measured its token cost; we never use real credentials.
It runs either locally over stdio or as a hosted endpoint and needs one secret (OUTBOX_API_KEY); use a scoped, least-privilege key.
Install Outbox MCP server
Install in Claude Code
claude mcp add out-box -e OUTBOX_API_KEY='<outbox-api-key>' -- npx -y @out-box/mcpInstall in Cursor
{
"mcpServers": {
"out-box": {
"command": "npx",
"args": [
"-y",
"@out-box/mcp"
],
"env": {
"OUTBOX_API_KEY": "<outbox-api-key>"
}
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).
Install in Claude Desktop
{
"mcpServers": {
"out-box": {
"command": "npx",
"args": [
"-y",
"@out-box/mcp"
],
"env": {
"OUTBOX_API_KEY": "<outbox-api-key>"
}
}
}
}Settings → Developer → Edit Config (claude_desktop_config.json), then restart.
Install in VS Code
{
"servers": {
"out-box": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@out-box/mcp"
],
"env": {
"OUTBOX_API_KEY": "<outbox-api-key>"
}
}
}
}Add to .vscode/mcp.json in your workspace.
Install in Windsurf
{
"mcpServers": {
"out-box": {
"command": "npx",
"args": [
"-y",
"@out-box/mcp"
],
"env": {
"OUTBOX_API_KEY": "<outbox-api-key>"
}
}
}
}Add to ~/.codeium/windsurf/mcp_config.json.
Configuration
| Variable | Required | Secret | Description |
|---|---|---|---|
| OUTBOX_API_KEY | yes | yes | Outbox API key (Bearer `outbox_*`). Without it (or the CLI's ~/.outboxrc) the server still starts and every tool asks you to configure it. |
| OUTBOX_USER | — | — | Owner username used as the default `user` argument, skipping a call to /api/me (optional). |
| OUTBOX_RC | — | — | Alternative path to the CLI credential file (default ~/.outboxrc). |
| OUTBOX_API_BASE | — | — | API base URL (everything, including content reads). Default https://api.out-box.dev. |
| OUTBOX_SITE_BASE | — | — | Public site base URL, only used to build the link shown to the human. Default https://out-box.dev. |
| OUTBOX_TOOLSETS | — | — | Toolsets to register: core, comments, library, sharing, keys, teams, automation, apps or all. Default core,comments,sharing. |
| OUTBOX_FILES_DIR | — | — | Folder where the MCP reads/writes files via file_path (nothing outside it). Default ~/Outbox. |
Remote endpoints
- streamable-http
https://mcp.out-box.dev/mcp
Freshness
Not enough public signals yet to judge maintenance.
Last commit (default branch)
2026-10-15 · 3d ago · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-10-11 · 8d ago · official registry · v0.3.1
FAQ
›How do I install the Outbox MCP server in Claude Code?
Run: claude mcp add out-box -e OUTBOX_API_KEY='<outbox-api-key>' -- npx -y @out-box/mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.
›Does Outbox require an API key?
Yes. It expects OUTBOX_API_KEY, of which 1 is a secret.
›Can I use Outbox as a remote (hosted) MCP server?
Yes — it offers both a hosted endpoint and a local stdio package.
›Is Outbox in the official MCP registry?
Yes, as dev.out-box/mcp.
Sources and method
- Official MCP Registry entry
- updated 2026-10-11
- GitHub repository
- fetched 2026-10-19
- Package registry (npm / PyPI)
- listed
- Last checked against all sources
- 2026-10-19
The description, packages and links come from the maintainer's own published metadata. Token cost, security signals, freshness and the reading above are MCPSkillHub's own measurements; see the methodology. Spot an error? Request a correction or claim the listing.