feat: Add open ai compatible moderations api

docs/_static/llama-stack-spec.yaml

@@ -199,6 +199,36 @@ paths:
             schema:
               $ref: '#/components/schemas/CompletionRequest'
         required: true
+  /v1/openai/v1/moderations:
+    post:
+      responses:
+        '200':
+          description: A moderation object.
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ModerationObject'
+        '400':
+          $ref: '#/components/responses/BadRequest400'
+        '429':
+          $ref: >-
+            #/components/responses/TooManyRequests429
+        '500':
+          $ref: >-
+            #/components/responses/InternalServerError500
+        default:
+          $ref: '#/components/responses/DefaultError'
+      tags:
+        - Safety
+      description: >-
+        Classifies if text and/or image inputs are potentially harmful.
+      parameters: []
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/CreateRequest'
+        required: true
   /v1/agents:
     get:
       responses:
@@ -4630,6 +4660,96 @@ components:
       title: CompletionResponseStreamChunk
       description: >-
         A chunk of a streamed completion response.
+    CreateRequest:
+      type: object
+      properties:
+        input:
+          oneOf:
+            - type: string
+            - type: array
+              items:
+                type: string
+          description: >-
+            Input (or inputs) to classify. Can be a single string, an array of strings,
+            or an array of multi-modal input objects similar to other models.
+        model:
+          type: string
+          description: >-
+            The content moderation model you would like to use.
+      additionalProperties: false
+      required:
+        - input
+        - model
+      title: CreateRequest
+    ModerationObject:
+      type: object
+      properties:
+        id:
+          type: string
+          description: >-
+            The unique identifier for the moderation request.
+        model:
+          type: string
+          description: >-
+            The model used to generate the moderation results.
+        results:
+          type: array
+          items:
+            $ref: '#/components/schemas/ModerationObjectResults'
+          description: A list of moderation objects
+      additionalProperties: false
+      required:
+        - id
+        - model
+        - results
+      title: ModerationObject
+      description: A moderation object.
+    ModerationObjectResults:
+      type: object
+      properties:
+        flagged:
+          type: boolean
+          description: >-
+            Whether any of the below categories are flagged.
+        categories:
+          type: object
+          additionalProperties:
+            type: boolean
+          description: >-
+            A list of the categories, and whether they are flagged or not.
+        category_applied_input_types:
+          type: object
+          additionalProperties:
+            type: array
+            items:
+              type: string
+          description: >-
+            A list of the categories along with the input type(s) that the score applies
+            to.
+        category_scores:
+          type: object
+          additionalProperties:
+            type: number
+          description: >-
+            A list of the categories along with their scores as predicted by model.
+        user_message:
+          type: string
+        metadata:
+          type: object
+          additionalProperties:
+            oneOf:
+              - type: 'null'
+              - type: boolean
+              - type: number
+              - type: string
+              - type: array
+              - type: object
+      additionalProperties: false
+      required:
+        - flagged
+        - metadata
+      title: ModerationObjectResults
+      description: A moderation object.
     AgentConfig:
       type: object
       properties: