Free AI chatbot API: train it on any website, chat over HTTP.
Two real requests, run from this page. Build an AI from a website or Instagram @, then send it a customer message. Copy the code into your own app.
1 Build an AI from a website or Instagram @
curl -X POST https://api.instantreply.co/public-demo/instant \
-H "Content-Type: application/json" \
-d '{"query":"yourbusiness.com"}'2 Chat with it
Run step 1 first: its response gives you the demo id.
curl -X POST https://api.instantreply.co/public-demo/instant/message \
-H "Content-Type: application/json" \
-d '{"id":"<demo id from step 1>","channel":"whatsapp","messages":[{"role":"user","content":"What do you offer and how much is it?"}]}'Ready for real customers?
Get an API key for the /v1 REST API, webhooks and the MCP server on your own connected accounts.
Questions about the API
Is this AI chatbot API really free?
Yes. The demo endpoints on this page need no key and no account. Each IP can build 6 AIs and send 40 messages an hour, and every demo AI lives for 24 hours.
What does the AI learn from?
Only what the website or public Instagram profile says: pages, prices, hours, bio and recent post captions. It is told never to invent prices or policies, and says it will check when something isn't there.
How do I use it in production?
Create a free account, choose a developer plan and create an API key. Production calls use the /v1 REST API and MCP server against your own connected Instagram, Messenger or WhatsApp accounts, with signed webhooks.
Which channels can the reply be written for?
Set channel to whatsapp, instagram, messenger or comment. A comment reply is one short public line that never posts a price or a link.
See the full API reference or try the no-code AI sales setter.