API Reference

This page is the lookup index for the main functions of zalo-bot-js. Each important function is separated into its own page so the documentation stays readable, maintainable, and aligned with a per-API structure.

If you are just getting started, read Getting started first. If you want to look up each function directly, use the list below.

Bot information and update group

• initialize
• shutdown
• cachedUser
• getMe
• getUpdates / getUpdate

Sending group

• sendMessage
• sendPhoto
• sendSticker
• sendChatAction

Webhook group

• setWebhook
• deleteWebhook
• getWebhookInfo

Event and update handling group

• on
• onText
• processUpdate

Message helper group

• replyText
• replyPhoto
• replySticker
• replyAction

Polling runtime group

• startPolling / stopPolling / isPolling

Handler-based API group

• ApplicationBuilder
• Application
• CommandHandler
• MessageHandler
• filters
• CallbackContext

Related pages

• Examples and tests
• Architecture
• Integration with n8n

Next

Start with getMe if you want to validate the token, or sendMessage if you want to send the first response from the bot.

Last updated: April 5, 2026