Automatización de WhatsApp con Vibe Code

Add WhatsApp to this project with the Whatsable API v1.
First, ask me to save my Whatsable API key as the secret WHATSABLE_API_KEY: in my platform's secrets store, or in a local .env file that git ignores. Never hard-code the key, commit it to git, or send it to frontend code.
API reference: https://docs.whatsable.app/api-reference/v1
OpenAPI file: https://api.whatsable.app/v1/openapi.json
Base URL: https://api.whatsable.app/v1
Auth header: Authorization: Bearer <WHATSABLE_API_KEY>
Build rules:
- Call the API only from server-side code (an edge or backend function), never from the browser.
- Test the connection with GET /v1/me.
- Send messages with POST /v1/messages. Phone numbers are E.164 with a leading +.
- To message someone first, or more than 24 hours after their last message, send an approved template: {"to": "+15551234567", "type": "template", "template": {"name": "<template name>", "language": "<language code>", "variables": {}}}.
- Inside the 24-hour window you can send text: {"to": "+15551234567", "type": "text", "text": {"body": "Hi!"}}.
- A 201 means Whatsable recorded the message. Read "status" in the body: "sent" or "failed". Don't resend a failed message whose error is not retryable.
- Send an Idempotency-Key header with each send. Reuse it only to retry a send that got no answer; after a "failed" send with "retryable": true, retry later with a new key.
- To receive messages, add a backend function and point a Whatsable webhook at its URL (Settings → Webhooks → Add endpoint, turn on Incoming messages).
Confirm the secret is set, then build the send flow for my use case.
Prefer to work through your AI assistant instead of code? Connect the Whatsable MCP server: https://docs.whatsable.app/mcp/agent-skill