⚗️ Implement chat API

apps/docs/openapi/builder/_category_.json

@@ -0,0 +1,4 @@
+{
+  "label": "Builder",
+  "sidebar_position": 2
+}

apps/docs/openapi/builder/authenticate.md

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 ---
 sidebar_position: 1
-slug: /
 ---
 
 # Authentication

apps/docs/openapi/chat/_category_.json

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+{
+  "label": "Chat (Experimental 🧪)"
+}

apps/docs/openapi/introduction.md

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+---
+sidebar_position: 1
+slug: /
+---
+
+# Introduction
+
+Typebot currently offers 2 APIs: **Builder** and **Chat**
+
+## Builder
+
+The Builder API is about what you can edit on https://app.typebot.io (i.e. create typebots, insert blocks etc, get results...). It is currently under active development and new endpoints will be added incrementally.
+
+## Chat
+
+:::caution
+You should not use it in production. This API is experimental at the moment and will be heavily modified with time.
+:::
+
+The Chat API allows you to execute (chat) with a typebot.
+
+### How to find my `typebotId`
+
+<img
+  src="/img/api/typebotId.png"
+  width="900"
+  alt="Get typebot ID"
+/>