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+External Task Link API Procedures
+=================================
+
+## getExternalTaskLinkTypes
+
+- Purpose: **Get all registered external link providers**
+- Parameters: **none**
+- Result on success: **dict**
+- Result on failure: **false**
+
+Request example:
+
+```json
+{"jsonrpc":"2.0","method":"getExternalTaskLinkTypes","id":477370568}
+```
+
+Response example:
+
+```json
+{
+    "jsonrpc": "2.0",
+    "result": {
+        "auto": "Auto",
+        "attachment": "Attachment",
+        "file": "Local File",
+        "weblink": "Web Link"
+    },
+    "id": 477370568
+}
+```
+
+## getExternalTaskLinkProviderDependencies
+
+- Purpose: **Get available dependencies for a given provider**
+- Parameters:
+    - **providerName** (string, required)
+- Result on success: **dict**
+- Result on failure: **false**
+
+Request example:
+
+```json
+{"jsonrpc":"2.0","method":"getExternalTaskLinkProviderDependencies","id":124790226,"params":["weblink"]}
+```
+
+Response example:
+
+```json
+{
+    "jsonrpc": "2.0",
+    "result": {
+        "related": "Related"
+    },
+    "id": 124790226
+}
+```
+
+## createExternalTaskLink
+
+- Purpose: **Create a new external link**
+- Parameters:
+    - **task_id** (integer, required)
+    - **url** (string, required)
+    - **dependency** (string, required)
+    - **type** (string, optional)
+    - **title** (string, optional)
+- Result on success: **link_id**
+- Result on failure: **false**
+
+Request example:
+
+```json
+{"jsonrpc":"2.0","method":"createExternalTaskLink","id":924217495,"params":[9,"http:\/\/localhost\/document.pdf","related","attachment"]}
+```
+
+Response example:
+
+```json
+{
+    "jsonrpc": "2.0",
+    "result": 1,
+    "id": 924217495
+}
+```
+
+## updateExternalTaskLink
+
+- Purpose: **Update external task link**
+- Parameters:
+    - **task_id** (integer, required)
+    - **link_id** (integer, required)
+    - **title** (string, required)
+    - **url** (string, required)
+    - **dependency** (string, required)
+- Result on success: **true**
+- Result on failure: **false**
+
+Request example:
+
+```json
+{
+    "jsonrpc":"2.0",
+    "method":"updateExternalTaskLink",
+    "id":1123562620,
+    "params": {
+        "task_id":9,
+        "link_id":1,
+        "title":"New title"
+    }
+}
+```
+
+Response example:
+
+```json
+{
+    "jsonrpc": "2.0",
+    "result": true,
+    "id": 1123562620
+}
+```
+
+## getExternalTaskLinkById
+
+- Purpose: **Get an external task link**
+- Parameters:
+    - **task_id** (integer, required)
+    - **link_id** (integer, required)
+- Result on success: **dict**
+- Result on failure: **false**
+
+Request example:
+
+```json
+{"jsonrpc":"2.0","method":"getExternalTaskLinkById","id":2107066744,"params":[9,1]}
+```
+
+Response example:
+
+```json
+{
+    "jsonrpc": "2.0",
+    "result": {
+        "id": "1",
+        "link_type": "attachment",
+        "dependency": "related",
+        "title": "document.pdf",
+        "url": "http:\/\/localhost\/document.pdf",
+        "date_creation": "1466965256",
+        "date_modification": "1466965256",
+        "task_id": "9",
+        "creator_id": "0"
+    },
+    "id": 2107066744
+}
+```
+
+## getAllExternalTaskLinks
+
+- Purpose: **Get all external links attached to a task**
+- Parameters:
+    - **task_id** (integer, required)
+- Result on success: **list of external links**
+- Result on failure: **false**
+
+Request example:
+
+```json
+{"jsonrpc":"2.0","method":"getAllExternalTaskLinks","id":2069307223,"params":[9]}
+```
+
+Response example:
+
+```json
+{
+    "jsonrpc": "2.0",
+    "result": [
+        {
+            "id": "1",
+            "link_type": "attachment",
+            "dependency": "related",
+            "title": "New title",
+            "url": "http:\/\/localhost\/document.pdf",
+            "date_creation": "1466965256",
+            "date_modification": "1466965256",
+            "task_id": "9",
+            "creator_id": "0",
+            "creator_name": null,
+            "creator_username": null,
+            "dependency_label": "Related",
+            "type": "Attachment"
+        }
+    ],
+    "id": 2069307223
+}
+```
+
+## removeExternalTaskLink
+
+- Purpose: **Remove an external link**
+- Parameters:
+    - **task_id** (integer, required)
+    - **link_id** (integer, required)
+- Result on success: **true**
+- Result on failure: **false**
+
+Request example:
+
+```json
+{"jsonrpc":"2.0","method":"removeExternalTaskLink","id":552055660,"params":[9,1]}
+```
+
+Response example:
+
+```json
+{
+    "jsonrpc": "2.0",
+    "result": true,
+    "id": 552055660
+}
+```