chore: update OpenAPI spec [sdk-bot]

Author: OpenRouter SDK Bot

.speakeasy/in.openapi.yaml

@@ -21634,6 +21634,11 @@ components:
           - 'top_p'
           - 'max_tokens'
         supports_implicit_caching: true
+        supports_tool_choice:
+          auto: true
+          function: true
+          none: true
+          required: true
         supports_voice_cloning: false
         tag: 'openai'
         throughput_last_30m:
@@ -21737,6 +21742,8 @@ components:
           type: 'array'
         supports_implicit_caching:
           type: 'boolean'
+        supports_tool_choice:
+          $ref: '#/components/schemas/ToolChoiceSupport'
         supports_voice_cloning:
           default: false
           description: 'Whether this TTS endpoint accepts inline reference audio (`input_references`) for stateless voice cloning. Requests carrying reference audio are only routed to endpoints where this is true.'
@@ -21776,6 +21783,7 @@ components:
         - 'max_completion_tokens'
         - 'max_prompt_tokens'
         - 'supported_parameters'
+        - 'supports_tool_choice'
         - 'uptime_last_30m'
         - 'uptime_last_5m'
         - 'uptime_last_1d'
@@ -24578,6 +24586,32 @@ components:
         - 'mode'
         - 'tools'
       type: 'object'
+    ToolChoiceSupport:
+      description: 'Per-variant `tool_choice` support. `tool_choice` in `supported_parameters` only says the parameter is accepted; these flags say which of its values passed testing.'
+      example:
+        auto: true
+        function: true
+        none: true
+        required: true
+      properties:
+        auto:
+          description: 'Whether the endpoint supports `"tool_choice": "auto"`.'
+          type: 'boolean'
+        function:
+          description: 'Whether the endpoint supports naming a function, `"tool_choice": {"type": "function", ...}`.'
+          type: 'boolean'
+        none:
+          description: 'Whether the endpoint supports `"tool_choice": "none"`.'
+          type: 'boolean'
+        required:
+          description: 'Whether the endpoint supports `"tool_choice": "required"`.'
+          type: 'boolean'
+      required:
+        - 'none'
+        - 'auto'
+        - 'required'
+        - 'function'
+      type: 'object'
     ToolSearchServerTool:
       description: 'OpenRouter built-in server tool: finds tools marked `defer_loading` and makes them callable'
       example: