Summary
Bridges Claude to Rosh, a plain-English programming language that compiles to HTML5 canvas, Phaser games, or Three.js scenes. Exposes nine tools: compile Rosh code locally without auth, publish and manage programs on rosh.cloud with API keys, and fetch language docs. You write natural instructions like "create box called player" and get runnable web apps back. Useful when you want Claude to generate interactive demos, games, or 3D visualizations without wrestling with JavaScript directly. The compile tool works offline, but publishing requires a free rosh.cloud account with read/write scopes.
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Rosh MCP Server
Give any AI the power to create and publish interactive web apps, games, and 3D scenes using Rosh — a plain-English programming language.
What is Rosh?
Rosh lets you write programs in plain English:
create box called player at 400 300
set player color "blue"
on key "ArrowRight" then set player x to player x + 5
This compiles to a runnable HTML5 canvas app, a Phaser game, or a Three.js 3D scene — depending on the target.
Quick Start
Claude Desktop / Claude Code
Add to your MCP config (~/.claude/mcp.json or Claude Desktop settings):
{
"mcpServers": {
"rosh": {
"command": "uvx",
"args": ["rosh-mcp"],
"env": {
"ROSH_API_KEY": "rosh_k1_your_key_here"
}
}
}
}
Cursor / Windsurf
Same config format — add to your MCP settings file.
Get an API Key
- Create an account at rosh.cloud
- Go to Settings → API Keys
- Create a key with
read,writescopes
Note: All tools require an API key — set
ROSH_API_KEYbefore starting the server.
Tools
| Tool | Description | Auth Required |
|---|---|---|
rosh_docs | Get the full Rosh language reference | Yes (read) |
rosh_compile | Compile Rosh code to HTML | Yes (read) |
rosh_publish | Publish a program to rosh.cloud | Yes (write) |
rosh_list_programs | List your programs | Yes (read) |
rosh_get_program | Get program details by ID | Yes (read) |
rosh_update_program | Update an existing program | Yes (write) |
rosh_delete_program | Delete a program | Yes (write) |
rosh_hide_program | Hide a program (moderation) | Yes (moderate) |
rosh_show_program | Unhide a program | Yes (moderate) |
Example Prompts
Try these with any MCP-capable AI:
- "Build me a space shooter game" — AI reads docs, writes Rosh code, compiles to Phaser
- "Create a 3D rotating sculpture" — compiles to Three.js
- "Make an interactive dashboard with buttons and counters" — compiles to web
- "Show me what Rosh can do" — AI calls
rosh_docsand explores
Environment Variables
| Variable | Required | Default | Description |
|---|---|---|---|
ROSH_API_KEY | Yes | — | Your rosh.cloud API key |
ROSH_API_BASE | No | https://rosh.cloud | API base URL |
Development
git clone https://github.com/rosh-studio/rosh-mcp.git
cd rosh-mcp
pip install -e .
rosh-mcp # runs the stdio server
License
MIT
Featured
Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →Categories
Registryactive
Packagerosh-mcp
TransportSTDIO
UpdatedMar 15, 2026
