diff --git a/docs/guide/extension-install.md b/docs/guide/extension-install.md
index 01833968b..a41d313c8 100644
--- a/docs/guide/extension-install.md
+++ b/docs/guide/extension-install.md
@@ -1,9 +1,11 @@
-### Extension Install
+# Extension Install
Anyone can create an extension by following the [example extension](https://github.com/lnbits/lnbits/tree/extension_install_02/lnbits/extensions/example).
Extensions can be installed by an admin user after the **LNbits** instance has been started.
+## Configure Repositories
+
Go to `Manage Server` > `Server` > `Extensions Manifests`
@@ -13,4 +15,50 @@ An `Extension Manifest` is an link to a `JSON` file whitch contains information
Multiple repositories can be configured.
-**LNbits** administrators should configure their instances to use repositories that they trust (like the [lnbits-extensions](https://github.com/lnbits/lnbits-extensions/) one.
+**LNbits** administrators should configure their instances to use repositories that they trust (like the [lnbits-extensions](https://github.com/lnbits/lnbits-extensions/) one). **Warning**: extensions can have bugs or mallicious code, be carefull what you install!!
+
+## Manifest File
+The manifest file is just a `JSON` file that lists a collection of extensions that can be installed. This file is of the form:
+
+```json
+{
+ "extensions": [...]
+ "repos": [...]
+}
+```
+
+There are two ways to specify installable extensions:
+
+### Explicit Release
+It goes under the `extensions` object and it is of the form:
+```json
+ {
+ "id": "lnurlp",
+ "name": "LNURL Pay Links",
+ "version": 1,
+ "shortDescription": "Upgrade to version 111111111",
+ "icon": "receipt",
+ "details": "All charge names should be 111111111. API panel must show:
",
+ "archive": "https://github.com/lnbits/lnbits-extensions/raw/main/new/lnurlp/1/lnurlp.zip",
+ "hash": "a22d02de6bf306a7a504cd344e032cc6d48837a1d4aeb569a55a57507bf9a43a",
+ "htmlUrl": "https://github.com/lnbits/lnbits-extensions/tree/main/new/lnurlp/1",
+ "infoNotification": "This is a very old version"
+ }
+```
+
+| Field | Type | | Description |
+|----------------------|---------------|-----------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| id | string | mandatory | The ID of the extension. Must be unique for each extensions. It is also as path in the URL. |
+| name | string | mandatory | User friendly name for the extension. It will be displayed on the installation page. |
+| version | string | mandatory | Version of this release. [Semantic versoning](https://semver.org/) is recommended. |
+| shortDescription | string | optional | A few words about the extension. It will be displayed on the installation page. |
+| icon | string | optional | quasar valid icon name |
+| details | string (html) | optional | Details about this particular release |
+| archive | string | mandatory | URL to the `zip` file that contains the extension source-code |
+| hash | string | mandatory | The hash (`sha256`) of the `zip` file. The extension will not be installed if the hash is incorrect. |
+| htmlUrl | string | optional | Link to the extension home page. |
+| infoNotification | string | optional | Users that have this release installed will see a info message for their extension. For example if the extension support will be terminated soon. |
+| criticalNotification | string | optional | Reserved for urgent notifications. The admin user will receive a message each time it visits the `Install` page. One example is if the extension has a critical bug. |
+
+
+### GitHub Repository