perch-mcp
Enables building Perch mods by providing Perch's display vocabulary, documentation, builtin package examples, a package validator, and the ability to run your package in Perch.
README
perch-mcp
The MCP server for building Perch mods. Point the AI tool you already use at it and it gets what only Perch can give it: the display vocabulary, the docs, the builtin packages as worked examples, a package validator, and a way to run your package in Perch.
Nothing here calls an AI. Your own client (Claude Code, Claude Desktop, Cursor, …) does the thinking on your own account.
Install
Requires Node 18+.
Claude Code
claude mcp add perch -- npx -y github:hlpdev/perch-mcp
Claude Desktop — claude_desktop_config.json:
{
"mcpServers": {
"perch": { "command": "npx", "args": ["-y", "github:hlpdev/perch-mcp"] }
}
}
Cursor — .cursor/mcp.json (project) or the global one:
{
"mcpServers": {
"perch": { "command": "npx", "args": ["-y", "github:hlpdev/perch-mcp"] }
}
}
Any other MCP client: run npx -y github:hlpdev/perch-mcp over stdio.
Tools
| Tool | What it gives the model |
|---|---|
perch_guide |
The short authoring guide: package shape, Lua declarations, handlers, scopes, style. |
perch_vocabulary |
The canonical vocabulary (api-spec.json): components and props, color roles, host functions, handlers, scopes, contexts. |
perch_docs |
The modding and API docs: list, read a page, or search. |
perch_examples |
The builtin packages (media, clock, weather, launcher, …) as complete examples. |
perch_validate |
Checks a package folder: manifest schema, entry, Lua syntax, widget declaration, component names. |
perch_run |
Launches Perch with PERCH_MOD_DEV at your package (Windows; PERCH_EXE overrides the Steam lookup). |
Try: "Make me a Perch widget that shows my Steam friends online, using the perch tools."
Updating the bundled content
content/ is generated from the Perch repos and committed:
npm run sync # needs ../perch, ../perch-studio, ../perch-site checked out
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