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Read and write typed fictional worlds (22 linked element types) via the OnlyWorlds open standard.
npx @getmcp/cli add com.onlyworlds/mcpRequires Node.js 18+. Community-contributed server. Review source before installing.
API-KeyWorld API key (ow_w_ write key, ow_r_ read key, or legacy 10-digit key)
Config file: ~/Library/Application Support/Claude/claude_desktop_config.json
{
"mcpServers": {
"com.onlyworlds/mcp": {
"url": "https://www.onlyworlds.com/mcp",
"transport": "streamable-http",
"headers": {
"API-Key": "",
"API-Pin": ""
}
}
}
}