diff --git a/dev-docs/bidders/amx-server.md b/dev-docs/bidders/amx-server.md
new file mode 100644
index 0000000000..1999e3c91b
--- /dev/null
+++ b/dev-docs/bidders/amx-server.md
@@ -0,0 +1,80 @@
+---
+layout: bidder
+title: AMX RTB
+description: AMX RTB Bid Adapter
+hide: true
+schain_supported: true
+gdpr_supported: true
+usp_supported: true
+coppa_supported: true
+userIds: all
+biddercode: amx
+safeframes_ok: true
+media_types: banner, video, native
+pbjs: false
+pbs: true
+pbs_app_supported: true
+fpd_supported: true
+multiformat_supported: true
+gpp_supported: true
+gvl_id: 737
+sidebarType: 1
+---
+
+### Bid Params
+
+{: .table .table-bordered .table-striped }
+| Name        | Scope    | Description                                                     | Example                         | Type     |
+|-------------|----------|-----------------------------------------------------------------|---------------------------------|----------|
+| `tagId`     | required | Tag ID                                                          | `'cHJlYmlkLm9yZw'`              | `string` |
+| `testMode`  | optional | Activate 100% fill ads                                          | `true`                          | `boolean`|
+| `adUnitId`  | optional | Ad Unit ID used in reporting. Will default to `bid.adUnitCode`  | `'sticky_banner'`               | `string` |
+
+### Test Parameters
+
+To enable 100% fill test ads, you can use the following `params`:
+
+```javascript
+{
+  testMode: true,
+  tagId: "cHJlYmlkLm9yZw"
+}
+```
+
+This will produce a bid at $10 with a test creative.
+
+Note that the `tagId` is case-sensitive. Do not use `cHJlYmlkLm9yZw` in production environments: this ID is for testing only.
+
+### First Party Data
+
+From Prebid.js >= 4.30, publishers can use the `ortb2` configuration parameter to provide First Party Data. We accept all standard OpenRTB fields for both:
+
+- `ortb2.site`
+- `ortb2.user`
+
+Note that all fields are optional. For contextual data (e.g. categories), standard IAB taxonomies are supported. We do not support passing first party data via bid parameters.
+
+#### Example - Setting ortb2.site and ortb2.user fields
+
+```javascript
+pbjs.setBidderConfig({
+  bidders: ["amx"],
+  config: {
+    ortb2: {
+      site: {
+        keywords: "kw1,kw2",
+        cat: ["IAB2"],
+        sectioncat: ["IAB2-1"],
+        pagecat: ["IAB2-22"],
+        content: {
+          context: 5
+        }
+      },
+      user: {
+        yob: 1981,
+        keywords: "kw3",
+      }
+    }
+  }
+})
+```
diff --git a/dev-docs/bidders/amx.md b/dev-docs/bidders/amx.md
index 447c4c19be..b6bee4c1e3 100644
--- a/dev-docs/bidders/amx.md
+++ b/dev-docs/bidders/amx.md
@@ -1,21 +1,21 @@
 ---
 layout: bidder
 title: AMX RTB
-description: AMX RTB Prebid Bid Adapter
+description: AMX RTB Bid Adapter
 hide: true
 schain_supported: true
 gdpr_supported: true
 usp_supported: true
 coppa_supported: true
-userIds: britepoolId, criteo, id5Id, identityLink, liveIntentId, netId, parrableId, pubCommonId, unifiedId, amxId
+userIds: all
 biddercode: amx
 safeframes_ok: true
-media_types: banner, video, native
+media_types: banner, video
 pbjs: true
-pbs: true
-pbs_app_supported: true
+pbs: false
 fpd_supported: true
 gpp_supported: true
+multiformat_supported: true
 gvl_id: 737
 sidebarType: 1
 ---