Wit.ai will turn natural sentences into structured data, which is a good thing when you think about chat conversations and a non-technical audience, and includes a machine learning approach as well. This is how most Slack bots work for example, using a rule based approach. Of course you don’t need Wit.ai or Artificial Intelligence (AI) to develop a chatbot – you could also set up your own logic or database and parse certain keywords to react upon, if you don’t need natural language processing. You can teach it to improve understanding – just think about the different ways that a date can be written (tomorrow at 12am, Sat 27 May at 12:00, next Saturday at noon, etc.) – Wit.ai will do all the heavy labor and parse this into a JavaScript Date format. The cool thing about Wit.ai is that it is a natural language processor and will learn over time. looking up the weather with a RESTful webservice) into the predefined stories. So basically you plug in your functions (e.g. With Wit.ai you write stories like in a normal conversation and add your own functions that you will write – in our case – in JavaScript. Or for the sake of trying it out you could just use the weather example from the Wit.ai and always return ’sunny‘ or some random forecast. Of course you should have some kind of story in mind, or some problem that your bot will solve, like looking up some kind of information from a webservice. Sign up at Wit.ai and create a new bot – therefore follow the quickstart at. Your Facebook App can remain in sandbox mode and your Page does NOT have to be publicly visible.īefore you can set up the webhook we need to look at Wit.ai and the node.js part first. Start by creating a Facebook page (or use an existing one) and a Facebook App. It depends on which group you are targeting – if you are in the B2C field and want to target mainly consumers then Messenger is probably a good option.Ī good way to get started is to follow Facebook’s Messenger platform quickstart tutorial. You could of course also develop a bot for Slack, Telegram or other messaging platform that provides similar APIs. So using Wit.ai in combination with Facebook messenger is a „natural“ match and very easy to start with. Facebook also bought the startup Wit.ai, that will provides the AI engine or „stories“ behind our chat bot. And in April 2016 Facebook opened the Send/Receive APIs for developers. We choose Facebook Messenger as the messaging platform because it has the largest user base – more than 900 million users all over the world. We hope this how-to guide will help you to learn how to develop a bot with Wit.ai and node.js for Facebook Messenger yourself. Sounds easy, right? □ Well let’s dive right in! As a prerequisite you should have some knowledge about node.js. The goal of this tutorial is to that you will have a (chat-)bot with artificial intelligence (AI), that will answer people that write to you Facebook page on Messenger. A chatbot is basically an additional interface to an application that might or might not be suitable. As a mobile app solutions agency based in Vienna and Berlin we think that bots will accompany or extend apps and visual user interfaces in the future and become an important part of how we as humans will interact with organizations and systems. Now add this route to your application to handle WebHook verification request.In this article we want to give you an overview of how to develop a chatbot for Facebook Messenger using the Send/Receive API, Wit.ai, node.js and Google App Engine. We’ll use Node.js body parsing module to parse out data from GET and POST requests. They are simple HTTP callbacks that will receive incoming events data like received messages from messenger bot. Messenger uses WebHooks to authenticate and pass event data to our application. ngrok will generate a public HTTP and HTTPS URL for your local dev environment. Make sure you forward port 80 to 8989 in your router WAN settings. All you have to do is to download a zipped binary from their site, unzip and run it. Instead, we’ll use ngrok to expose our local dev environment through NAT and access it from ngrok public HTTPS URL. Letencrypt only issues certificates to domains and not IP addresses. The only way to get a free trusted signed certificate is to use Letsencrypt. Messenger won’t accept your WebHook URL if you’re using a self-signed SSL certificate. Workaround for HTTPSīefore moving on to WebHooks, we need to configure HTTPS for our dev environment. Now if you visit in your browser, you’ll see a Hello World! response.
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