diff --git a/server/src/main/java/au/org/aodn/ogcapi/server/core/mapper/Converter.java b/server/src/main/java/au/org/aodn/ogcapi/server/core/mapper/Converter.java
index 40e5ffcf..592b5c5d 100644
--- a/server/src/main/java/au/org/aodn/ogcapi/server/core/mapper/Converter.java
+++ b/server/src/main/java/au/org/aodn/ogcapi/server/core/mapper/Converter.java
@@ -119,6 +119,7 @@ default <D extends StacCollectionModel> Collection getCollection(D m, Filter fil
                                         .title(l.getTitle())
                                         .description(l.getDescription())
                                         .aiGroup(l.getAiGroup())
+                                        .aiRole(l.getAiRole())
                                 )
                                 .toList()
                 );
diff --git a/server/src/main/java/au/org/aodn/ogcapi/server/core/model/ExtendedLink.java b/server/src/main/java/au/org/aodn/ogcapi/server/core/model/ExtendedLink.java
index 1dce4263..774e000b 100644
--- a/server/src/main/java/au/org/aodn/ogcapi/server/core/model/ExtendedLink.java
+++ b/server/src/main/java/au/org/aodn/ogcapi/server/core/model/ExtendedLink.java
@@ -5,6 +5,8 @@
 import lombok.Getter;
 import lombok.Setter;
 
+import java.util.List;
+
 @Getter
 @Setter
 public class ExtendedLink extends Link {
@@ -12,6 +14,9 @@ public class ExtendedLink extends Link {
     @JsonProperty("ai:group")
     private String aiGroup;
 
+    @JsonProperty("ai:role")
+    private List<String> aiRole;
+
     @JsonProperty("description")
     private String description;
 
@@ -24,6 +29,11 @@ public ExtendedLink aiGroup(String aiGroup) {
         return this;
     }
 
+    public ExtendedLink aiRole(List<String> aiRole) {
+        this.aiRole = aiRole;
+        return this;
+    }
+
     public ExtendedLink description(String description) {
         this.description = description;
         return this;
diff --git a/server/src/main/java/au/org/aodn/ogcapi/server/core/model/LinkModel.java b/server/src/main/java/au/org/aodn/ogcapi/server/core/model/LinkModel.java
index 527b6d35..17533bdf 100644
--- a/server/src/main/java/au/org/aodn/ogcapi/server/core/model/LinkModel.java
+++ b/server/src/main/java/au/org/aodn/ogcapi/server/core/model/LinkModel.java
@@ -7,6 +7,8 @@
 import lombok.Data;
 import lombok.NoArgsConstructor;
 
+import java.util.List;
+
 @Data
 @Builder
 @NoArgsConstructor
@@ -20,6 +22,9 @@ public class LinkModel {
     @JsonProperty("ai:group")
     protected String aiGroup;
 
+    @JsonProperty("ai:role")
+    protected List<String> aiRole;
+
     @JsonProperty("description")
     protected String description;
 
diff --git a/server/src/main/java/au/org/aodn/ogcapi/server/core/model/enumeration/CQLFields.java b/server/src/main/java/au/org/aodn/ogcapi/server/core/model/enumeration/CQLFields.java
index d39c779c..6d18a300 100644
--- a/server/src/main/java/au/org/aodn/ogcapi/server/core/model/enumeration/CQLFields.java
+++ b/server/src/main/java/au/org/aodn/ogcapi/server/core/model/enumeration/CQLFields.java
@@ -194,6 +194,20 @@ public enum CQLFields implements CQLFieldsInterface {
             )._toQuery(),
             null
     ),
+    links_airole_contains(
+            StacBasicField.LinksAiRole.searchField,
+            StacBasicField.LinksAiRole.displayField,
+            (literal) -> NestedQuery.of(m -> m
+                    .path(StacBasicField.Links.searchField)  // "links"
+                    .query(q -> q
+                            .term(t -> t
+                                    .field(StacBasicField.LinksAiRole.searchField)  // "links.ai:role"
+                                    .value(literal)
+                            )
+                    )
+            )._toQuery(),
+            null
+    ),
     credit_contains(
             StacSummeries.Credits.searchField,
             StacSummeries.Credits.displayField,
diff --git a/server/src/main/java/au/org/aodn/ogcapi/server/core/model/enumeration/StacBasicField.java b/server/src/main/java/au/org/aodn/ogcapi/server/core/model/enumeration/StacBasicField.java
index 752cdcd0..8556e1bc 100644
--- a/server/src/main/java/au/org/aodn/ogcapi/server/core/model/enumeration/StacBasicField.java
+++ b/server/src/main/java/au/org/aodn/ogcapi/server/core/model/enumeration/StacBasicField.java
@@ -22,6 +22,7 @@ public enum StacBasicField {
     ),
     Links("links", "links"),
     LinksTitle("links.title", "links.title"),
+    LinksAiRole("links.ai:role", "links.ai:role"),
     Collection("collection", "collection", "collection.keyword"),
     AssetsSummary("assets", "assets"),
     Themes("themes", "themes")
diff --git a/server/src/test/java/au/org/aodn/ogcapi/server/core/mapper/StacToCollectionTest.java b/server/src/test/java/au/org/aodn/ogcapi/server/core/mapper/StacToCollectionTest.java
index 6a6c7339..5f258421 100644
--- a/server/src/test/java/au/org/aodn/ogcapi/server/core/mapper/StacToCollectionTest.java
+++ b/server/src/test/java/au/org/aodn/ogcapi/server/core/mapper/StacToCollectionTest.java
@@ -78,6 +78,7 @@ public void verifyAddingPropertyWorks() {
                 .type("text/html")
                 .title("Data Link")
                 .aiGroup("data-access")
+                .aiRole(List.of("download"))
                 .description("description")
                 .build();
         var link2 = LinkModel.builder()
@@ -160,6 +161,13 @@ public void verifyAddingPropertyWorks() {
         Assertions.assertEquals(parameterVocabs, collection.getProperties().get(CollectionProperty.parameterVocabs));
         Assertions.assertNotNull(collection.getLinks());
         Assertions.assertEquals(3, collection.getLinks().size());
+
+        ExtendedLink convertedLink1 = (ExtendedLink) collection.getLinks().stream()
+                .filter(l -> "related".equals(l.getRel()))
+                .findFirst()
+                .orElseThrow();
+
+        Assertions.assertEquals(List.of("download"), convertedLink1.getAiRole());
     }
 
     @Test
diff --git a/server/src/test/resources/portal_records_index_schema.json b/server/src/test/resources/portal_records_index_schema.json
index 31015cc7..b0d9dec7 100644
--- a/server/src/test/resources/portal_records_index_schema.json
+++ b/server/src/test/resources/portal_records_index_schema.json
@@ -182,6 +182,9 @@
               },
               "ai:group": {
                 "type": "keyword"
+              },
+              "ai:role": {
+                "type": "keyword"
               }
             }
           }