demo.st

Demo stage for vibe-coded prototypes. Reserve a subdomain, publish from your agent via MCP, get a clean link like yourproject.demo.st. Static hosting only (Nginx; no PHP, no databases).

• Site: https://demo.st

• MCP endpoint: https://demo.st/mcp

Cursor plugin

This repo is a Cursor plugin. Install it from the Cursor Marketplace (after it’s published) or add the repo in Cursor to use the demo.st MCP server.

Getting your MCP token

Authenticated tools (reserve subdomain, upload zip, clear, release) require a Bearer token:

1. Sign in at https://demo.st (create an account if needed).

2. Open https://demo.st/api/mcp/token or the MCP page and copy the token.

3. Set it as an environment variable:

   • Windows (PowerShell): $env:DEMO_ST_MCP_TOKEN = "your-token-here"

   • macOS / Linux: export DEMO_ST_MCP_TOKEN="your-token-here"

   • Or add to your shell profile (.bashrc, .zshrc) so Cursor picks it up.

4. Restart Cursor (or reload the window). The Agent can then use demo.st tools.

MCP tools

• check_subdomain_availability — Check if a subdomain is available (no token).

• reserve_subdomain — Reserve a subdomain (token required).

• upload_site — Upload a .zip as site content; use zip_base64 (easiest for agents) or file_url for a public zip URL (token required).

• clear_site — Remove deployed content; subdomain stays reserved (token required).

• release_subdomain — Release your subdomain (token required).

Related MCP server: Hostsmith MCP Server

License

See LICENSE.