diff --git a/idn/sailpoint-api.v3.yaml b/idn/sailpoint-api.v3.yaml
index c3b3c79..2985366 100644
--- a/idn/sailpoint-api.v3.yaml
+++ b/idn/sailpoint-api.v3.yaml
@@ -550,7 +550,7 @@ tags:
       This ingestion process introduces a latency from when the operational data is created to when it is available in search. 
       Depending on the system load, this can take a few seconds to a few minutes. 
       Please keep this latency in mind when you use search. 
-
+  - name: Segments
   - name: Service Desk Integration
     description: |
       Use this API to build an integration between IdentityNow and a service desk ITSM (IT service management) solution. 
@@ -825,6 +825,10 @@ paths:
     $ref: "./v3/paths/search-aggregate.yaml"
   /search/{index}/{id}:
     $ref: "./v3/paths/search-get.yaml"
+  /segments:
+    $ref: "./v3/paths/segments.yaml"
+  /segments/{id}:
+    $ref: "./v3/paths/segment.yaml"
   /service-desk-integrations:
     $ref: "./v3/paths/service-desk-integrations.yaml"
   /service-desk-integrations/{id}:
diff --git a/idn/v3/paths/segment.yaml b/idn/v3/paths/segment.yaml
new file mode 100644
index 0000000..2af069b
--- /dev/null
+++ b/idn/v3/paths/segment.yaml
@@ -0,0 +1,160 @@
+get:
+  operationId: getSegment
+  security:
+    - oauth2: [ idn:segment:read, idn:segment:manage ]
+  tags:
+    - Segments
+  summary: Get a Segment by ID
+  description: >-
+    This API returns the segment specified by the given ID.
+
+
+    A token with ORG_ADMIN or API authority is required to call this API.
+  parameters:
+    - in: path
+      name: id
+      schema:
+        type: string
+      required: true
+      description: The ID of the Segment to retrieve.
+      example: ef38f94347e94562b5bb8424a56397d8
+  responses:
+    '200':
+      description: Segment
+      content:
+        application/json:
+          schema:
+            $ref: '../schemas/Segment.yaml'
+    '400':
+      $ref: '../../v3/responses/400.yaml'
+    '401':
+      $ref: '../../v3/responses/401.yaml'
+    '403':
+      $ref: '../../v3/responses/403.yaml'
+    '404':
+      $ref: '../../v3/responses/404.yaml'
+    '429':
+      $ref: '../../v3/responses/429.yaml'
+    '500':
+      $ref: '../../v3/responses/500.yaml'
+delete:
+  operationId: deleteSegment
+  security:
+    - oauth2: [ idn:segment:manage ]
+  tags:
+    - Segments
+  summary: Delete Segment by ID
+  description: >-
+    This API deletes the segment specified by the given ID.
+
+
+    Note that segment deletion may take some time to become effective.
+    
+
+    A token with ORG_ADMIN or API authority is required to call this API.
+  parameters:
+    - in: path
+      name: id
+      schema:
+        type: string
+      required: true
+      description: The ID of the Segment to delete.
+      example: ef38f94347e94562b5bb8424a56397d8
+  responses:
+    '204':
+      description: No content.
+    '400':
+      $ref: '../../v3/responses/400.yaml'
+    '401':
+      $ref: '../../v3/responses/401.yaml'
+    '403':
+      $ref: '../../v3/responses/403.yaml'
+    '404':
+      $ref: '../../v3/responses/404.yaml'
+    '429':
+      $ref: '../../v3/responses/429.yaml'
+    '500':
+      $ref: '../../v3/responses/500.yaml'
+patch:
+  operationId: patchSegment
+  security:
+    - oauth2: [ idn:segment:manage ]
+  tags:
+    - Segments
+  summary: Update a Segment
+  description: >-
+    Allows updating Segment fields using the [JSON Patch](https://tools.ietf.org/html/rfc6902) standard.
+
+
+    Note that changes to a segment may take some time to propagate to all identities, and that segments will have no
+    effect if segmentation is not enabled for your org.
+    
+
+    A token with ORG_ADMIN or API authority is required to call this API.
+  parameters:
+    - in: path
+      name: id
+      schema:
+        type: string
+      required: true
+      description: The ID of the Segment being modified.
+      example: ef38f94347e94562b5bb8424a56397d8
+  requestBody:
+    required: true
+    description: |
+      A list of Segment update operations according to the [JSON Patch](https://tools.ietf.org/html/rfc6902) standard.
+
+
+      The following fields are patchable:
+      * name
+      * description
+      * owner
+      * visibilityCriteria
+      * active
+    content:
+      application/json-patch+json:
+        schema:
+          type: array
+          items:
+            type: object
+        examples:
+            Set Visibility Criteria:
+                description: Set the visibility criteria
+                value:
+                  - op: "replace"
+                    path: "/visibilityCriteria"
+                    value:
+                      expression:
+                        operator: "AND"
+                        children:
+                          - operator: "EQUALS"
+                            attribute: "location"
+                            value:
+                              type: "STRING"
+                              value: "Philadelphia"
+                          - operator: "EQUALS"
+                            attribute: "department"
+                            value:
+                              type: "STRING"
+                              value: "HR"
+                            
+  responses:
+    '200':
+      description: >-
+        Indicates the PATCH operation succeeded, and returns the Segment's new representation.
+      content:
+        application/json:
+          schema:
+            $ref: '../schemas/Segment.yaml'
+    '400':
+      $ref: '../../v3/responses/400.yaml'
+    '401':
+      $ref: '../../v3/responses/401.yaml'
+    '403':
+      $ref: '../../v3/responses/403.yaml'
+    '404':
+      $ref: '../../v3/responses/404.yaml'
+    '429':
+      $ref: '../../v3/responses/429.yaml'
+    '500':
+      $ref: '../../v3/responses/500.yaml'
diff --git a/idn/v3/paths/segments.yaml b/idn/v3/paths/segments.yaml
new file mode 100644
index 0000000..5d4538a
--- /dev/null
+++ b/idn/v3/paths/segments.yaml
@@ -0,0 +1,72 @@
+post:
+  operationId: createSegment
+  security:
+    - oauth2: [ idn:segment:manage ]
+  tags:
+    - Segments
+  summary: Create Segment
+  description: >-
+    This API creates a segment.
+
+
+    Note that segment definitions may take time to propagate to all identities.
+    
+
+    A token with ORG_ADMIN or API authority is required to call this API.
+  requestBody:
+    required: true
+    content:
+      application/json:
+        schema:
+          $ref: '../schemas/Segment.yaml'
+  responses:
+    '201':
+      description: Segment created
+      content:
+        application/json:
+          schema:
+            $ref: '../schemas/Segment.yaml'
+    '400':
+      $ref: '../../v3/responses/400.yaml'
+    '401':
+      $ref: '../../v3/responses/401.yaml'
+    '403':
+      $ref: '../../v3/responses/403.yaml'
+    '429':
+      $ref: '../../v3/responses/429.yaml'
+    '500':
+      $ref: '../../v3/responses/500.yaml'
+get:
+  operationId: listSegments
+  security:
+    - oauth2: [ idn:segment:read, idn:segment:manage ]
+  tags:
+    - Segments
+  summary: List Segments
+  description: >-
+    This API returns a list of all segments.
+
+    A token with ORG_ADMIN or API authority is required to call this API.
+  parameters:
+    - $ref: '../../v3/parameters/limit.yaml'
+    - $ref: '../../v3/parameters/offset.yaml'
+    - $ref: '../../v3/parameters/count.yaml'
+  responses:
+    '200':
+      description: List of all Segments
+      content:
+        application/json:
+          schema:
+            type: array
+            items:
+              $ref: '../schemas/Segment.yaml'
+    '400':
+      $ref: '../../v3/responses/400.yaml'
+    '401':
+      $ref: '../../v3/responses/401.yaml'
+    '403':
+      $ref: '../../v3/responses/403.yaml'
+    '429':
+      $ref: '../../v3/responses/429.yaml'
+    '500':
+      $ref: '../../v3/responses/500.yaml'
diff --git a/idn/v3/schemas/Expression.yaml b/idn/v3/schemas/Expression.yaml
new file mode 100644
index 0000000..b04630a
--- /dev/null
+++ b/idn/v3/schemas/Expression.yaml
@@ -0,0 +1,21 @@
+type: object
+properties:
+  operator:
+    type: string
+    description: Operator for the expression
+    enum:
+      - AND 
+      - EQUALS
+    example: "EQUALS"
+  attribute:
+    type: string
+    description: Name for the attribute
+    example: "location"
+  value:
+    $ref: './Value.yaml'
+  children:
+    type: array
+    description: List of expressions
+    items:
+      $ref: './Value.yaml'
+    example: []
diff --git a/idn/v3/schemas/Segment.yaml b/idn/v3/schemas/Segment.yaml
new file mode 100644
index 0000000..e2d67c3
--- /dev/null
+++ b/idn/v3/schemas/Segment.yaml
@@ -0,0 +1,33 @@
+type: object
+properties:
+  id:
+    type: string
+    description: The id of the Segment.
+    example: "0f11f2a4-7c94-4bf3-a2bd-742580fe3bde"
+  name:
+    type: string
+    description: Segment Business Name
+    example: "segment-xyz"
+  created:
+    type: string
+    format: date-time
+    description: The time when this Segment is created
+    example: "2020-01-01T00:00:00.000000Z"
+  modified:
+    type: string
+    format: date-time
+    description: The time when this Segment is modified
+    example: "2020-01-01T00:00:00.000000Z"
+  description:
+    type: string
+    description: Optional description of the Segment
+    example: "This segment represents xyz"
+  owner:
+    $ref: '../../v3/schemas/access/OwnerReference.yaml'
+  visibilityCriteria:
+    $ref: './VisibilityCriteria.yaml'
+  active:
+    type: boolean
+    description: Whether the Segment is currently active. Inactive segments have no effect.
+    default: false
+    example: true
diff --git a/idn/v3/schemas/Value.yaml b/idn/v3/schemas/Value.yaml
new file mode 100644
index 0000000..514d072
--- /dev/null
+++ b/idn/v3/schemas/Value.yaml
@@ -0,0 +1,10 @@
+type: object
+properties:
+  type:
+    type: string
+    description: The type of attribute value
+    example: "STRING"
+  value:
+    type: string
+    description: The attribute value
+    example: "Austin"
diff --git a/idn/v3/schemas/VisibilityCriteria.yaml b/idn/v3/schemas/VisibilityCriteria.yaml
new file mode 100644
index 0000000..583adcc
--- /dev/null
+++ b/idn/v3/schemas/VisibilityCriteria.yaml
@@ -0,0 +1,4 @@
+type: object
+properties:
+  expression:
+    $ref: './Expression.yaml'