WhatsApp Platform API
Send and receive WhatsApp from your app, your workflow tool or your AI agent. A plain REST API, signed webhooks, a remote MCP server and an n8n node — authenticated with one API key in an Authorization header.
Base URL https://developers.wasync.app/api/v1
Quickstart
Create a key, make your first call, send your first message. Under five minutes.
n8n
Install the community node, create the credential, build a workflow with a trigger.
MCP
Connect Claude or Cursor to the remote MCP server. No code on your side.
API reference
Every endpoint, generated from the OpenAPI contract, with request and response samples.
Webhooks
One endpoint per account: signature verification, the event catalog, secret rotation.
Concepts
Workspaces, connection types, licences, scopes, errors and idempotency.