@@ -119,73 +119,6 @@ components:
       required:
         - type
       type: object
-    AdvisorProfile:
-      description: >-
-        A named advisor profile. The executor model selects it by `name` and the profile's config (model, instructions,
-        etc.) takes precedence over the request-wide advisor parameters for that call.
-      example:
-        instructions: You are a critical code reviewer.
-        model: ~anthropic/claude-opus-latest
-        name: reviewer
-      properties:
-        forward_transcript:
-          description: >-
-            When true, the full parent conversation is forwarded to the advisor so it sees the same context the executor
-            does (and the tool-call `prompt`, if given, is appended as a final user turn). When false or omitted, the
-            advisor receives only the `prompt` the executor passes in the tool call.
-          example: false
-          type: boolean
-        instructions:
-          description: >-
-            System instructions for the advisor sub-agent. When omitted, the advisor responds with no system prompt of
-            its own.
-          example: You are a senior staff engineer. Give a focused, decisive plan.
-          type: string
-        max_completion_tokens:
-          description: >-
-            Maximum number of output tokens (including reasoning) the advisor may produce. When omitted, the provider's
-            default applies.
-          example: 2048
-          type: integer
-        max_tool_calls:
-          description: >-
-            Maximum number of tool-calling steps the advisor sub-agent may take during its agentic loop. Capped at 25.
-            Only relevant when the advisor is given tools.
-          example: 5
-          maximum: 25
-          minimum: 1
-          type: integer
-        model:
-          description: >-
-            Slug of the advisor model to consult (any OpenRouter model). When omitted, the executor can choose it via
-            the tool call's `model` argument; if neither is set, the model from the outer API request is used. The
-            advisor tool itself cannot be the advisor model.
-          example: ~anthropic/claude-opus-latest
-          type: string
-        name:
-          description: >-
-            Name of this advisor profile. The executor model passes this `name` to the advisor tool to select the
-            profile. Must be unique within the `advisors` roster. Letters, digits, underscores, and dashes; 1–64 chars.
-          example: reviewer
-          pattern: ^[a-zA-Z0-9_-]{1,64}$
-          type: string
-        reasoning:
-          $ref: '#/components/schemas/AdvisorReasoning'
-        temperature:
-          description: Sampling temperature forwarded to the advisor call. When omitted, the provider's default applies.
-          example: 0.7
-          format: double
-          type: number
-        tools:
-          description: >-
-            Tools the advisor sub-agent may use while forming its advice. The advisor runs as an agentic sub-agent over
-            these tools, then returns its text. Must not include the advisor tool itself.
-          items:
-            $ref: '#/components/schemas/AdvisorNestedTool'
-          type: array
-      required:
-        - name
-      type: object
     AdvisorReasoning:
       description: >-
         Reasoning configuration forwarded to the advisor call. Use this to control reasoning effort and token budget for
@@ -210,10 +143,13 @@ components:
     AdvisorServerTool_OpenRouter:
       description: >-
         OpenRouter built-in server tool: consults a higher-intelligence advisor model (any OpenRouter model) for
-        guidance mid-generation and returns its response. The advisor may run as a sub-agent with its own tools.
+        guidance mid-generation and returns its response. The advisor may run as a sub-agent with its own tools. Include
+        multiple entries to offer several named advisors; at most one entry may omit `name` to act as the default
+        advisor.
       example:
         parameters:
           model: ~anthropic/claude-opus-latest
+          name: reviewer
         type: openrouter:advisor
       properties:
         parameters:
@@ -226,25 +162,11 @@ components:
         - type
       type: object
     AdvisorServerToolConfig:
-      description: Configuration for the openrouter:advisor server tool.
+      description: Configuration for one openrouter:advisor server tool entry.
       example:
         model: ~anthropic/claude-opus-latest
+        name: reviewer
       properties:
-        advisors:
-          description: >-
-            Roster of named advisor profiles. When set, the executor model selects one by passing its `name` to the
-            advisor tool; the chosen profile's config overrides the request-wide advisor parameters. Profile names must
-            be unique.
-          example:
-            - instructions: You are a critical code reviewer.
-              model: ~anthropic/claude-opus-latest
-              name: reviewer
-            - instructions: You are a systems architect.
-              model: ~openai/gpt-latest
-              name: architect
-          items:
-            $ref: '#/components/schemas/AdvisorProfile'
-          type: array
         forward_transcript:
           description: >-
             When true, the full parent conversation is forwarded to the advisor so it sees the same context the executor
@@ -279,8 +201,26 @@ components:
             advisor tool itself cannot be the advisor model.
           example: ~anthropic/claude-opus-latest
           type: string
+        name:
+          description: >-
+            Optional name for this advisor. The model sees one tool per named advisor (and one default for an unnamed
+            entry). Names must be unique across advisor entries. Letters, digits, spaces, underscores, and dashes;
+            trimmed; 1–64 chars.
+          example: reviewer
+          maxLength: 64
+          minLength: 1
+          pattern: ^[a-zA-Z0-9 _-]+$
+          type: string
         reasoning:
           $ref: '#/components/schemas/AdvisorReasoning'
+        stream:
+          description: >-
+            When true, the advisor's advice streams incrementally as it is produced. In the Responses API this emits
+            `response.output_text.delta` events targeting the advisor output item; the final `advice` field is still set
+            on the completed item. Has no effect on the Chat Completions API (where the advice arrives only as the final
+            tool result). When false or omitted, the advice arrives only as the final result.
+          example: false
+          type: boolean
         temperature:
           description: Sampling temperature forwarded to the advisor call. When omitted, the provider's default applies.
           example: 0.7
@@ -9163,6 +9103,7 @@ components:
               - $ref: '#/components/schemas/OutputMemoryServerToolItem'
               - $ref: '#/components/schemas/OutputMcpServerToolItem'
               - $ref: '#/components/schemas/OutputSearchModelsServerToolItem'
+              - $ref: '#/components/schemas/OutputAdvisorServerToolItem'
               - $ref: '#/components/schemas/LocalShellCallItem'
               - $ref: '#/components/schemas/LocalShellCallOutputItem'
               - $ref: '#/components/schemas/ShellCallItem'
@@ -14505,6 +14446,17 @@ components:
           type: string
         id:
           type: string
+        instance_name:
+          description: >-
+            Provider-safe function name of the specific advisor instance that produced this item (e.g.
+            `openrouter_advisor__1`). Present only when more than one advisor tool is configured; omitted for the
+            default single advisor. Echo this field back unchanged so the advisor's cross-request memory stays
+            namespaced to the correct instance. This identity is positional: it is derived from the index of the advisor
+            entry in the request `tools` array, so clients must keep the order of advisor tool entries stable across
+            requests in a conversation. Reordering or inserting advisor entries shifts these names and causes each
+            advisor's cross-request memory to be attributed to the wrong instance.
+          example: openrouter_advisor__1
+          type: string
         model:
           description: Slug of the advisor model that was consulted.
           type: string