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With your Claude

The quickest way to make a real game: you describe it, Claude Code on your computer writes it, tests it, makes its home page and publishes it here. The playground has an MCP server: your Claude creates the project, follows its publication and reads other people's games for inspiration.

What you need

  • a GitHub account (the game lives in a public repository of your account);
  • Claude Code;
  • Docker: JumPHP runs everything in containers (PHP, the browser build, the tests), nothing else to install.

Connecting Claude to the playground

  1. Sign in with GitHub.
  2. In the Studio, on the MCP page, create your token.
  3. Copy the command shown and run it in a terminal:
claude mcp add --transport http --scope user jumphp https://<this site>/mcp --header "Authorization: Bearer jph_..."

The token gives access to your playground account: never put it in a repository.

Making a game

In Claude Code, just ask:

Create a platform game for me on the JumPHP playground: a ninja cat collects fish on the rooftops of Paris, 5 levels, enemy pigeons, a boss. Pixel art, 320 × 180 screen. Make its home page too.

Claude:

  1. creates the project (create_project): a GitHub repository with JumPHP, a first game and your request in BRIEF.md;
  2. clones it and writes the game following AGENTS.md (the JumPHP contract);
  3. tests it (bin/jumphp test), looks at the screenshots it takes itself, and checks the browser build;
  4. makes the game's home page (site/) with its real images;
  5. pushes to GitHub: the playground publishes the game within a minute (sync_project publishes right away and returns the errors);
  6. when the game is ready, shows it in the directory (update_project listed=true).

You can also create the project yourself (New game): the project page gives the command to run to get Claude started on it.

The MCP tools

Tool Purpose
whoami your account and the site's addresses
list_categories the directory's categories
create_project a new game (title, description, category, type, request)
get_project, list_projects the state of your projects, their publishing errors
update_project title, description, category, visible or not in the directory
sync_project publish the latest commit now
import_project publish an existing JumPHP repository
list_games, list_game_files, read_game_file read published games (get inspired, understand)

The cpc game type makes Claude work with dsk2jumphp for an Amstrad remake.