Unity MCP Server

const crypto = require("crypto") function parseBool(v, def) { if (v === undefined || v === null) return def const s = String(v).trim().toLowerCase() if (s === "1" || s === "true" || s === "yes" || s === "on") return true if (s === "0" || s === "false" || s === "no" || s === "off") return false return def } function parseIntSafe(v, def) { const n = Number.parseInt(v, 10) return Number.isFinite(n) ? n : def } function getAuthToken(requireAuth) { if (!requireAuth) return "" const envToken = process.env.MCP_TOKEN && String(process.env.MCP_TOKEN).trim() if (envToken) return envToken return crypto.randomBytes(24).toString("base64url") } const requireAuth = parseBool(process.env.MCP_REQUIRE_AUTH, true) // ---- Single Source of Truth ---- // All defaults and environment parsing happens here. // server.js should use this object directly without additional fallbacks. const config = { // HTTP server httpHost: "127.0.0.1", httpPort: parseIntSafe(process.env.MCP_HTTP_PORT, 5173), // TCP bridge (IPC with Unity) ipcHost: "127.0.0.1", ipcPort: parseIntSafe(process.env.MCP_IPC_PORT, 52100), // Auth authEnabled: requireAuth, authToken: getAuthToken(requireAuth), // Limits requestBodyLimitBytes: parseIntSafe(process.env.MCP_HTTP_BODY_LIMIT, 2 * 1024 * 1024), bridgeTimeoutMs: parseIntSafe(process.env.MCP_BRIDGE_TIMEOUT_MS, 8000), // Protocol protocolVersion: "2025-11-25", // CORS allowOriginRegex: /^https?:\/\/(localhost|127\.0\.0\.1)(:\d+)?$/i } module.exports = { config }