IESS Appointment WhatsApp Bot Automation (n8n) w/ Evolution & Ollama

Automate IESS appointment WhatsApp conversations with n8n—powered by Evolution API + Ollama

This IESS Appointment WhatsApp Bot Automation workflow automatically starts an IESS WhatsApp chat, listens to incoming webhook messages, classifies what the bot is asking for using Ollama (llama3.2), responds with the correct stored values via Evolution API, and logs availability results to a CSV.

What this workflow does

• Runs on a schedule (or manually) to load configuration (bot number, ID details, specialty, and Evolution API settings) and initialize a session state file.
• Sends an initial “Hola” message to the IESS appointment bot using the Evolution API sendText endpoint.
• Receives WhatsApp events through a configured Evolution API webhook, then extracts the bot’s latest message text.
• Checks the saved session state and continues only if the session is active and the incoming message comes from the configured bot number.
• Uses Ollama (llama3.2) (with a regex fallback) to determine whether the bot is requesting:
  • a cédula
  • an expedition year
  • a specialty
  • menu/confirmation input
  • reporting availability
  • or a restart
• Sends the appropriate WhatsApp reply via Evolution API; when availability is returned, it logs a timestamped row to a local CSV and marks the session as complete.
• If the bot requests a restart, the workflow sends “Hola” again to restart the conversation.

Use cases

• Running a hands-off WhatsApp IESS appointment check for a specific cédula/specialty and capturing availability to CSV.
• Scheduling periodic appointment availability monitoring without manual messaging.
• Building reliable conversation handling with n8n for WhatsApp bot flows using Evolution + AI classification.

Technical details

• Integrations: Evolution API (Evolution Manager), WhatsApp webhook endpoint /evolution-iess, Ollama (llama3.2)
• n8n nodes/tech: webhook, http request, set, code, switch, manual trigger, plus session state persistence to disk
• Output: local CSV availability logging with timestamped results