Perplexity MCP Server

/** * Environment configuration for the Perplexity MCP server */ import { VALID_MODELS, ValidModel } from "../schemas/types.js"; export class EnvironmentConfig { public readonly apiKey: string; public readonly defaultModel: ValidModel; constructor() { this.apiKey = this.getRequiredEnvVar("PERPLEXITY_API_KEY"); this.defaultModel = this.getValidatedModel(); } private getRequiredEnvVar(name: string): string { const value = process.env[name]; if (!value) { throw new Error(`${name} environment variable is required`); } return value; } private getValidatedModel(): ValidModel { const modelFromEnv = process.env.PERPLEXITY_MODEL || "sonar-pro"; if (!VALID_MODELS.includes(modelFromEnv as ValidModel)) { throw new Error( `Invalid default model '${modelFromEnv}'. Valid models are: ${VALID_MODELS.join(", ")}` ); } return modelFromEnv as ValidModel; } }