diff --git a/modules/dasBidAdapter.md b/modules/dasBidAdapter.md
new file mode 100644
index 00000000000..8778617c2d6
--- /dev/null
+++ b/modules/dasBidAdapter.md
@@ -0,0 +1,52 @@
+# Overview
+
+```
+Module Name: DAS Bidder Adapter
+Module Type: Bidder Adapter
+Maintainer: support@ringpublishing.com
+```
+
+# Description
+
+Module that connects to DAS demand sources.
+Only banner and native format is supported.
+
+# Test Parameters
+```js
+var adUnits = [{
+  code: 'test-div-ad',
+  mediaTypes: {
+    banner: {
+      sizes: [[300, 250], [300, 600]]
+    }
+  },
+  bids: [{
+    bidder: 'das',
+    params: {
+      network: '4178463',
+      site: 'test',
+      area: 'areatest',
+      slot: 'slot'
+    }
+  }]
+}];
+```
+
+# Parameters
+
+| Name                         | Scope    | Type     | Description                                                                                                                                                                                                                                                                | Example                                                                                     |
+|------------------------------|----------|----------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------|
+| network                      | required | String   | Specific identifier provided by DAS                                                                                                                                                                                                                                        | `"4178463"`                                                                                 |
+| site                         | required | String   | Specific identifier name (case-insensitive) that is associated with this ad unit. Represents the website/domain in the ad unit hierarchy                                                                                                                                   | `"example_com"`                                                                             |
+| area                         | required | String   | Ad unit category name; only case-insensitive alphanumeric with underscores and hyphens are allowed. Represents the content section or category (e.g., sport, news, lifestyle)                                                                                              | `"sport"`                                                                                   |
+| slot                         | required | String   | Ad unit placement name (case-insensitive)                                                                                                                                                                                                                                  | `"slot"`                                                                                    |
+| slotSequence                 | optional | Number   | Ad unit sequence position provided by DAS                                                                                                                                                                                                                                  | `1`                                                                                         |
+| pageContext                  | optional | Object   | Web page context data                                                                                                                                                                                                                                                      | `{}`                                                                                        |
+| pageContext.dr               | optional | String   | Document referrer URL address                                                                                                                                                                                                                                              | `"https://example.com/"`                                                                    |
+| pageContext.du               | optional | String   | Document URL address                                                                                                                                                                                                                                                       | `"https://example.com/sport/football/article.html?id=932016a5-02fc-4d5c-b643-fafc2f270f06"` |
+| pageContext.dv               | optional | String   | Document virtual address as slash-separated path that may consist of any number of parts (case-insensitive alphanumeric with underscores and hyphens); first part should be the same as `site` value and second as `area` value; next parts may reflect website navigation | `"example_com/sport/football"`                                                              |
+| pageContext.keyWords         | optional | String[] | List of keywords associated with this ad unit; only case-insensitive alphanumeric with underscores and hyphens are allowed                                                                                                                                                 | `["euro", "lewandowski"]`                                                                   |
+| pageContext.keyValues        | optional | Object   | Key-values associated with this ad unit (case-insensitive); following characters are not allowed in the values: `" ' = ! + # * ~ ; ^ ( ) < > [ ] & @`                                                                                                                      | `{}`                                                                                        |
+| pageContext.keyValues.ci     | optional | String   | Content unique identifier                                                                                                                                                                                                                                                  | `"932016a5-02fc-4d5c-b643-fafc2f270f06"`                                                    |
+| pageContext.keyValues.adunit | optional | String   | Ad unit name                                                                                                                                                                                                                                                               | `"example_com/sport"`                                                                       |
+| customParams                 | optional | Object   | Custom request params                                                                                                                                                                                                                                                      | `{}`                                                                                        |