Evolution API

Open-source WhatsApp integration API supporting Baileys (WhatsApp Web) and official WhatsApp Business API (Cloud API). Built with Node.js + TypeScript + Express.js + Prisma.

Authentication

All requests use the apikey header. Two levels of keys exist:

• Global API Key: Set via AUTHENTICATION_API_KEY env var. Has full access to all instances.
• Instance Token: Per-instance key returned on creation. Scoped to that instance only.

apikey: YOUR_API_KEY

Every request follows this pattern: