diff --git a/docs/compendium/bindings.md b/docs/compendium/bindings.md
new file mode 100644
index 0000000..262df8a
--- /dev/null
+++ b/docs/compendium/bindings.md
@@ -0,0 +1,185 @@
+# UI Bindings
+
+A user interface binding (UI binding) is an optional component of an ERC.
+It can be used to make static figures interactive.
+For example, authors can show how different parameter settings of a computational model affect the result shown in a figure.
+A UI binding stores information on
+
+- the code lines needed to generate the corresponding figure,
+- the variable/parameter in the code that should be made interactive,
+- the data subset required for the figure, and
+- the UI widget (e.g., a slider or radio buttons).
+
+The UI binding configuration is a JSON object tored in the property `interaction` of the ERC metadata.
+For this reason, the compendium must be at least a `candidate` where the metadata extraction is completed before a UI binding can be created.
+
+## Create a UI binding
+
+`POST /api/v1/bindings/binding`
+
+Example request body for a new UI binding, here using with a slider:
+
+```json
+{
+  "id": "rDdFN",
+  "computationalResult": {
+    "type": "figure",
+    "result": "Figure 3"
+  },
+  "sourcecode": {
+    "file": "main.Rmd",
+    "codelines": [{
+      "first_line": 101,
+      "last_line": 503
+      }],
+    "parameter": [{
+      "text": "duration <- 24",
+      "name": "duration",
+      "val": 24,
+      "uiWidget": {
+        "minValue": 1,
+        "type": "slider",
+        "maxValue": 24,
+        "stepSize": 1,
+        "caption": "The duration parameter specifies the duration of the flood event in hours."
+        }
+      }]
+    }
+}
+```
+
+### Request body properties
+
+- `id` - ID of the compendium for which the UI binding should be created
+- `computationalResult` - specification of the computational result that should be made interactive
+  - `type` - type of the computational result, e.g., a figure or a table
+  - `result` - the name of the result as it is referred to in the text
+- `sourcecode` all code-related information needed to create a UI binding for result specified above
+  - `file` - main file of the research compendium containing the R code
+  - `codelines` - array of code chunks with the code needed to generate the result
+    - `first_line` - start of the code chunk
+    - `last_line` - end of the code chunk
+  - `parameter` - array of parameters that should be made interactive
+    - `text` - parameter as it is initialized in the code
+    - `name` - the name of the parameter without the value
+    - `val` - the value of the parameter without the name as it is set in the code
+    - `uiWidget` - specification of the UI widget, one per parameter
+      - `type` - widget type, e.g. a slider or radio buttons
+      - `minValue` - minimum value of the slider
+      - `maxValue` - maximum value of the slider
+      - `stepSize` - step size when moving the slider
+      - `caption` - caption for the result
+      
+### Response
+
+```json
+200 Ok
+
+{
+  "callback": "ok",
+  "data": {
+  "id": "rDdFN",
+  "computationalResult": {
+    "type": "figure",
+    "result": "Figure 3"
+  },
+  "sourcecode": {
+    "file": "main.Rmd",
+    "codelines": [{
+      "first_line": 101,
+      "last_line": 503
+      }],
+    "parameter": [{
+      "text": "duration <- 24",
+      "name": "duration",
+      "val": 24,
+      "uiWidget": {
+        "minValue": 1,
+        "type": "slider",
+        "maxValue": 24,
+        "stepSize": 1,
+        "caption": "The duration parameter specifies the duration of the flood event in hours."
+        }
+      }]
+    }
+}
+}
+```
+
+## Get changed Image from UI binding
+
+`GET /api/v1/compendium/:compendium/binding/:binding`
+
+### Request parameters
+
+- `:compendium` - ID of the compendium for which the UI binding server should be started
+- `:binding` - name of the binding in context for which the UI binding server should be started
+
+#### Add  changed bynding parameters as query parameters
+
+'?newValue0=<value>&newValue1=<value> ...'
+  
+ - 'newValue0' The value which should be assigned to the first changeable UI parameter
+  
+### Response
+
+200 Ok - Image of updated Figure/Table
+  
+  
+## Start server for one UI Binding
+
+`POST /api/v1/compendium/:compendium/binding/:binding`
+
+### Request parameters
+
+- `:compendium` - ID of the compendium for which the UI binding server should be started
+- `:binding` - name of the binding in context for which the UI binding server should be started
+
+### Request body properties
+
+- Optional
+
+### Response
+
+
+```json
+200 Ok
+
+{
+  "callback": "ok",
+  "data": {
+      request.body
+  }
+}
+```
+
+## Search for a UI binding
+
+`POST /api/v1/bindings/searchBinding`
+
+Request body for finding UI bindings that include a certain code snippet:
+
+```json
+{
+  "term": "processData(input)",
+  "metadata": {o2r.metadata}
+}
+```
+
+### Request body properties
+
+- `term` - search for UI bindings including the given code snippet
+- `metadata` - whole metadata object of the corresponding compendium
+
+### Response
+
+```json
+200 Ok
+
+{
+  "callback": "ok",
+  "data": ["result"] 
+}
+```
+
+- `data` - array of results for which bindings exist that include the corresponding code snippet