diff --git a/swagger/docs.go b/swagger/docs.go
index ab779b648..55b3a84f2 100644
--- a/swagger/docs.go
+++ b/swagger/docs.go
@@ -1198,6 +1198,30 @@ const docTemplate = `{
                 }
             }
         },
+        "/v1/messages": {
+            "post": {
+                "summary": "Generate a message response for the given messages and model.",
+                "parameters": [
+                    {
+                        "description": "query params",
+                        "name": "request",
+                        "in": "body",
+                        "required": true,
+                        "schema": {
+                            "$ref": "#/definitions/schema.AnthropicRequest"
+                        }
+                    }
+                ],
+                "responses": {
+                    "200": {
+                        "description": "Response",
+                        "schema": {
+                            "$ref": "#/definitions/schema.AnthropicResponse"
+                        }
+                    }
+                }
+            }
+        },
         "/v1/models": {
             "get": {
                 "summary": "List and describe the various models available in the API.",
@@ -1739,6 +1763,169 @@ const docTemplate = `{
                 }
             }
         },
+        "schema.AnthropicContentBlock": {
+            "type": "object",
+            "properties": {
+                "content": {},
+                "id": {
+                    "type": "string"
+                },
+                "input": {
+                    "type": "object",
+                    "additionalProperties": true
+                },
+                "is_error": {
+                    "type": "boolean"
+                },
+                "name": {
+                    "type": "string"
+                },
+                "source": {
+                    "$ref": "#/definitions/schema.AnthropicImageSource"
+                },
+                "text": {
+                    "type": "string"
+                },
+                "tool_use_id": {
+                    "type": "string"
+                },
+                "type": {
+                    "type": "string"
+                }
+            }
+        },
+        "schema.AnthropicImageSource": {
+            "type": "object",
+            "properties": {
+                "data": {
+                    "type": "string"
+                },
+                "media_type": {
+                    "type": "string"
+                },
+                "type": {
+                    "type": "string"
+                }
+            }
+        },
+        "schema.AnthropicMessage": {
+            "type": "object",
+            "properties": {
+                "content": {},
+                "role": {
+                    "type": "string"
+                }
+            }
+        },
+        "schema.AnthropicRequest": {
+            "type": "object",
+            "properties": {
+                "max_tokens": {
+                    "type": "integer"
+                },
+                "messages": {
+                    "type": "array",
+                    "items": {
+                        "$ref": "#/definitions/schema.AnthropicMessage"
+                    }
+                },
+                "metadata": {
+                    "type": "object",
+                    "additionalProperties": {
+                        "type": "string"
+                    }
+                },
+                "model": {
+                    "type": "string"
+                },
+                "stop_sequences": {
+                    "type": "array",
+                    "items": {
+                        "type": "string"
+                    }
+                },
+                "stream": {
+                    "type": "boolean"
+                },
+                "system": {
+                    "type": "string"
+                },
+                "temperature": {
+                    "type": "number"
+                },
+                "tool_choice": {},
+                "tools": {
+                    "type": "array",
+                    "items": {
+                        "$ref": "#/definitions/schema.AnthropicTool"
+                    }
+                },
+                "top_k": {
+                    "type": "integer"
+                },
+                "top_p": {
+                    "type": "number"
+                }
+            }
+        },
+        "schema.AnthropicResponse": {
+            "type": "object",
+            "properties": {
+                "content": {
+                    "type": "array",
+                    "items": {
+                        "$ref": "#/definitions/schema.AnthropicContentBlock"
+                    }
+                },
+                "id": {
+                    "type": "string"
+                },
+                "model": {
+                    "type": "string"
+                },
+                "role": {
+                    "type": "string"
+                },
+                "stop_reason": {
+                    "type": "string"
+                },
+                "stop_sequence": {
+                    "type": "string"
+                },
+                "type": {
+                    "type": "string"
+                },
+                "usage": {
+                    "$ref": "#/definitions/schema.AnthropicUsage"
+                }
+            }
+        },
+        "schema.AnthropicTool": {
+            "type": "object",
+            "properties": {
+                "description": {
+                    "type": "string"
+                },
+                "input_schema": {
+                    "type": "object",
+                    "additionalProperties": true
+                },
+                "name": {
+                    "type": "string"
+                }
+            }
+        },
+        "schema.AnthropicUsage": {
+            "type": "object",
+            "properties": {
+                "input_tokens": {
+                    "type": "integer"
+                },
+                "output_tokens": {
+                    "type": "integer"
+                }
+            }
+        },
         "schema.BackendMonitorRequest": {
             "type": "object",
             "properties": {
@@ -2229,6 +2416,10 @@ const docTemplate = `{
                     "description": "The message name (used for tools calls)",
                     "type": "string"
                 },
+                "reasoning": {
+                    "description": "Reasoning content extracted from \u003cthinking\u003e...\u003c/thinking\u003e tags",
+                    "type": "string"
+                },
                 "role": {
                     "description": "The message role",
                     "type": "string"
diff --git a/swagger/swagger.json b/swagger/swagger.json
index 6fadcab51..15b6776e7 100644
--- a/swagger/swagger.json
+++ b/swagger/swagger.json
@@ -1191,6 +1191,30 @@
                 }
             }
         },
+        "/v1/messages": {
+            "post": {
+                "summary": "Generate a message response for the given messages and model.",
+                "parameters": [
+                    {
+                        "description": "query params",
+                        "name": "request",
+                        "in": "body",
+                        "required": true,
+                        "schema": {
+                            "$ref": "#/definitions/schema.AnthropicRequest"
+                        }
+                    }
+                ],
+                "responses": {
+                    "200": {
+                        "description": "Response",
+                        "schema": {
+                            "$ref": "#/definitions/schema.AnthropicResponse"
+                        }
+                    }
+                }
+            }
+        },
         "/v1/models": {
             "get": {
                 "summary": "List and describe the various models available in the API.",
@@ -1732,6 +1756,169 @@
                 }
             }
         },
+        "schema.AnthropicContentBlock": {
+            "type": "object",
+            "properties": {
+                "content": {},
+                "id": {
+                    "type": "string"
+                },
+                "input": {
+                    "type": "object",
+                    "additionalProperties": true
+                },
+                "is_error": {
+                    "type": "boolean"
+                },
+                "name": {
+                    "type": "string"
+                },
+                "source": {
+                    "$ref": "#/definitions/schema.AnthropicImageSource"
+                },
+                "text": {
+                    "type": "string"
+                },
+                "tool_use_id": {
+                    "type": "string"
+                },
+                "type": {
+                    "type": "string"
+                }
+            }
+        },
+        "schema.AnthropicImageSource": {
+            "type": "object",
+            "properties": {
+                "data": {
+                    "type": "string"
+                },
+                "media_type": {
+                    "type": "string"
+                },
+                "type": {
+                    "type": "string"
+                }
+            }
+        },
+        "schema.AnthropicMessage": {
+            "type": "object",
+            "properties": {
+                "content": {},
+                "role": {
+                    "type": "string"
+                }
+            }
+        },
+        "schema.AnthropicRequest": {
+            "type": "object",
+            "properties": {
+                "max_tokens": {
+                    "type": "integer"
+                },
+                "messages": {
+                    "type": "array",
+                    "items": {
+                        "$ref": "#/definitions/schema.AnthropicMessage"
+                    }
+                },
+                "metadata": {
+                    "type": "object",
+                    "additionalProperties": {
+                        "type": "string"
+                    }
+                },
+                "model": {
+                    "type": "string"
+                },
+                "stop_sequences": {
+                    "type": "array",
+                    "items": {
+                        "type": "string"
+                    }
+                },
+                "stream": {
+                    "type": "boolean"
+                },
+                "system": {
+                    "type": "string"
+                },
+                "temperature": {
+                    "type": "number"
+                },
+                "tool_choice": {},
+                "tools": {
+                    "type": "array",
+                    "items": {
+                        "$ref": "#/definitions/schema.AnthropicTool"
+                    }
+                },
+                "top_k": {
+                    "type": "integer"
+                },
+                "top_p": {
+                    "type": "number"
+                }
+            }
+        },
+        "schema.AnthropicResponse": {
+            "type": "object",
+            "properties": {
+                "content": {
+                    "type": "array",
+                    "items": {
+                        "$ref": "#/definitions/schema.AnthropicContentBlock"
+                    }
+                },
+                "id": {
+                    "type": "string"
+                },
+                "model": {
+                    "type": "string"
+                },
+                "role": {
+                    "type": "string"
+                },
+                "stop_reason": {
+                    "type": "string"
+                },
+                "stop_sequence": {
+                    "type": "string"
+                },
+                "type": {
+                    "type": "string"
+                },
+                "usage": {
+                    "$ref": "#/definitions/schema.AnthropicUsage"
+                }
+            }
+        },
+        "schema.AnthropicTool": {
+            "type": "object",
+            "properties": {
+                "description": {
+                    "type": "string"
+                },
+                "input_schema": {
+                    "type": "object",
+                    "additionalProperties": true
+                },
+                "name": {
+                    "type": "string"
+                }
+            }
+        },
+        "schema.AnthropicUsage": {
+            "type": "object",
+            "properties": {
+                "input_tokens": {
+                    "type": "integer"
+                },
+                "output_tokens": {
+                    "type": "integer"
+                }
+            }
+        },
         "schema.BackendMonitorRequest": {
             "type": "object",
             "properties": {
@@ -2222,6 +2409,10 @@
                     "description": "The message name (used for tools calls)",
                     "type": "string"
                 },
+                "reasoning": {
+                    "description": "Reasoning content extracted from \u003cthinking\u003e...\u003c/thinking\u003e tags",
+                    "type": "string"
+                },
                 "role": {
                     "description": "The message role",
                     "type": "string"
diff --git a/swagger/swagger.yaml b/swagger/swagger.yaml
index cc5816b36..73f94da2e 100644
--- a/swagger/swagger.yaml
+++ b/swagger/swagger.yaml
@@ -239,6 +239,114 @@ definitions:
       start:
         type: number
     type: object
+  schema.AnthropicContentBlock:
+    properties:
+      content: {}
+      id:
+        type: string
+      input:
+        additionalProperties: true
+        type: object
+      is_error:
+        type: boolean
+      name:
+        type: string
+      source:
+        $ref: '#/definitions/schema.AnthropicImageSource'
+      text:
+        type: string
+      tool_use_id:
+        type: string
+      type:
+        type: string
+    type: object
+  schema.AnthropicImageSource:
+    properties:
+      data:
+        type: string
+      media_type:
+        type: string
+      type:
+        type: string
+    type: object
+  schema.AnthropicMessage:
+    properties:
+      content: {}
+      role:
+        type: string
+    type: object
+  schema.AnthropicRequest:
+    properties:
+      max_tokens:
+        type: integer
+      messages:
+        items:
+          $ref: '#/definitions/schema.AnthropicMessage'
+        type: array
+      metadata:
+        additionalProperties:
+          type: string
+        type: object
+      model:
+        type: string
+      stop_sequences:
+        items:
+          type: string
+        type: array
+      stream:
+        type: boolean
+      system:
+        type: string
+      temperature:
+        type: number
+      tool_choice: {}
+      tools:
+        items:
+          $ref: '#/definitions/schema.AnthropicTool'
+        type: array
+      top_k:
+        type: integer
+      top_p:
+        type: number
+    type: object
+  schema.AnthropicResponse:
+    properties:
+      content:
+        items:
+          $ref: '#/definitions/schema.AnthropicContentBlock'
+        type: array
+      id:
+        type: string
+      model:
+        type: string
+      role:
+        type: string
+      stop_reason:
+        type: string
+      stop_sequence:
+        type: string
+      type:
+        type: string
+      usage:
+        $ref: '#/definitions/schema.AnthropicUsage'
+    type: object
+  schema.AnthropicTool:
+    properties:
+      description:
+        type: string
+      input_schema:
+        additionalProperties: true
+        type: object
+      name:
+        type: string
+    type: object
+  schema.AnthropicUsage:
+    properties:
+      input_tokens:
+        type: integer
+      output_tokens:
+        type: integer
+    type: object
   schema.BackendMonitorRequest:
     properties:
       model:
@@ -573,6 +681,9 @@ definitions:
       name:
         description: The message name (used for tools calls)
         type: string
+      reasoning:
+        description: Reasoning content extracted from <thinking>...</thinking> tags
+        type: string
       role:
         description: The message role
         type: string
@@ -1813,6 +1924,21 @@ paths:
           schema:
             $ref: '#/definitions/schema.OpenAIResponse'
       summary: Stream MCP chat completions with reasoning, tool calls, and results
+  /v1/messages:
+    post:
+      parameters:
+      - description: query params
+        in: body
+        name: request
+        required: true
+        schema:
+          $ref: '#/definitions/schema.AnthropicRequest'
+      responses:
+        "200":
+          description: Response
+          schema:
+            $ref: '#/definitions/schema.AnthropicResponse'
+      summary: Generate a message response for the given messages and model.
   /v1/models:
     get:
       responses: