feat: update API specifications from internal repo (#121)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: deepgram-robot

openapi.yml

@@ -1019,6 +1019,47 @@ components:
                     example:
                       - tag1
                       - tag2
+    ListBillingFieldsV1Response:
+      type: object
+      properties:
+        accessors:
+          type: array
+          description: List of accessor UUIDs for the time period
+          items:
+            type: string
+            format: uuid
+          example:
+            - 12345678-1234-1234-1234-123456789012
+            - 87654321-4321-4321-4321-210987654321
+        deployments:
+          type: array
+          description: List of deployment types for the time period
+          items:
+            type: string
+            enum:
+              - hosted
+              - beta
+              - self-hosted
+              - dedicated
+          example:
+            - hosted
+            - self-hosted
+        tags:
+          type: array
+          description: List of tags for the time period
+          items:
+            type: string
+          example:
+            - dev
+            - production
+        line_items:
+          type: object
+          description: Map of line item names to human-readable descriptions for the time period
+          additionalProperties:
+            type: string
+          example:
+            'streaming::nova-3': Nova - 3 (Stream)
+            'sync::aura-2': Aura -2 (Sync)
     ListProjectInvitesV1Response:
       type: object
       properties:
@@ -3892,6 +3933,49 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
+  '/v1/projects/{project_id}/billing/fields':
+    x-dg-public: true
+    description: View billing fields for a given time period
+    servers:
+      - url: 'https://api.deepgram.com'
+        description: Deepgram Production API
+        x-fern-server-name: Production
+    parameters:
+      - $ref: '#/components/parameters/ManageV1ProjectId'
+    get:
+      summary: List Project Billing Fields
+      tags:
+        - Manage
+        - V1
+        - Projects
+        - Billing
+        - Fields
+      x-fern-sdk-group-name:
+        - manage
+        - v1
+        - projects
+        - billing
+        - fields
+      security:
+        - ApiKeyAuth: []
+      operationId: manage.v1.projects.billing.fields.list
+      description: 'Lists the accessors, deployment types, tags, and line items used for billing data in the specified time period. Use this endpoint if you want to filter your results from the Billing Breakdown endpoint and want to know what filters are available.'
+      parameters:
+        - $ref: '#/components/parameters/ManageV1StartDate'
+        - $ref: '#/components/parameters/ManageV1EndDate'
+      responses:
+        '200':
+          description: A list of billing fields for a specific project
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ListBillingFieldsV1Response'
+        '400':
+          description: Invalid Request
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorResponse'
   '/v1/projects/{project_id}/invites':
     x-dg-public: true
     description: Manage your project invites