Substack MCP Server

/** * Utility to validate required environment variables for E2E tests */ export interface RequiredEnvVars { SUBSTACK_API_KEY: string SUBSTACK_HOSTNAME?: string } /** * Validates that required environment variables are set for E2E tests * @throws Error with descriptive message if required variables are missing */ export function validateE2ECredentials(): RequiredEnvVars { const apiKey = process.env.SUBSTACK_API_KEY || process.env.E2E_API_KEY const hostname = process.env.SUBSTACK_HOSTNAME || process.env.E2E_HOSTNAME if (!apiKey) { throw new Error(` ❌ Missing required Substack credentials. Set SUBSTACK_API_KEY and SUBSTACK_HOSTNAME. Required environment variables: - SUBSTACK_API_KEY: Your Substack API key (required) - SUBSTACK_HOSTNAME: Your Substack hostname (optional) You can set these variables: 1. In your environment: export SUBSTACK_API_KEY=your-key-here 2. In a .env file in the project root (copy from .env.example) 3. Alternative names: E2E_API_KEY, E2E_HOSTNAME For more information, see tests/e2e/README.md `) } return { SUBSTACK_API_KEY: apiKey, SUBSTACK_HOSTNAME: hostname } }