Summer Engine ships hosted MCP, local MCP, and a CLI so agents can build and test games
As of Oct 16, AI game engine Summer Engine can be driven by your coding agent through a hosted MCP at mcp.summerengine.com/mcp (assets, store pages, analytics) or a local summer mcp that builds scenes, writes scripts, plays the game, and reads errors. Terminal-first agents can skip MCP and use the summer CLI with --dry-run and --json (needs summer-engine 4.2.0+).