{
  "swagger": "2.0",
  "info": {
    "description": "OpenAI-compatible and Anthropic-compatible LLM proxy/gateway with Bifrost mapping. All configuration is loaded from environment variables.",
    "title": "LLM Gateway API",
    "termsOfService": "http://swagger.io/terms/",
    "contact": {
      "name": "optoant",
      "email": "admin@optoant.local"
    },
    "license": {
      "name": "MIT",
      "url": "https://opensource.org/licenses/MIT"
    },
    "version": "1.0"
  },
  "host": "localhost:8000",
  "basePath": "/",
  "paths": {
    "/health": {
      "get": {
        "description": "Returns service health status, database connectivity, and active configuration.",
        "produces": ["application/json"],
        "tags": ["health"],
        "summary": "Health check",
        "responses": {
          "200": {
            "description": "OK",
            "schema": {
              "$ref": "#/definitions/HealthResponse"
            }
          }
        }
      }
    },
    "/v1/{path}": {
      "post": {
        "security": [{"BearerAuth": []}],
        "description": "Forwards any /v1/* request to the configured OpenAI-compatible backend (e.g. DeepSeek). The Authorization header and all standard headers are passed through.",
        "consumes": ["application/json"],
        "produces": ["application/json"],
        "tags": ["openai"],
        "summary": "OpenAI-compatible proxy",
        "parameters": [
          {
            "type": "string",
            "description": "OpenAI API path (e.g. chat/completions)",
            "name": "path",
            "in": "path",
            "required": true
          },
          {
            "description": "OpenAI chat completions request",
            "name": "body",
            "in": "body",
            "required": true,
            "schema": {
              "$ref": "#/definitions/OpenAIChatRequest"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Upstream response forwarded as-is"
          },
          "502": {
            "description": "Bad Gateway — upstream unreachable",
            "schema": {
              "$ref": "#/definitions/ErrorResponse"
            }
          }
        }
      }
    },
    "/anthropic/{path}": {
      "post": {
        "security": [{"BearerAuth": []}],
        "description": "Converts Anthropic Messages API requests to OpenAI format, forwards to OPENAI_BACKEND, and converts the response back to Anthropic format.",
        "consumes": ["application/json"],
        "produces": ["application/json"],
        "tags": ["anthropic"],
        "summary": "Anthropic-compatible proxy",
        "parameters": [
          {
            "type": "string",
            "description": "Anthropic API path (e.g. v1/messages)",
            "name": "path",
            "in": "path",
            "required": true
          },
          {
            "description": "Anthropic Messages API request",
            "name": "body",
            "in": "body",
            "required": true,
            "schema": {
              "$ref": "#/definitions/AnthropicRequest"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Response in Anthropic format",
            "schema": {
              "$ref": "#/definitions/AnthropicResponse"
            }
          },
          "502": {
            "description": "Bad Gateway — upstream unreachable",
            "schema": {
              "$ref": "#/definitions/ErrorResponse"
            }
          }
        }
      }
    }
  },
  "definitions": {
    "HealthResponse": {
      "type": "object",
      "properties": {
        "status": {"type": "string", "example": "ok"},
        "database": {"type": "string", "example": "ok"},
        "config": {
          "type": "object",
          "properties": {
            "openai_backend": {"type": "string"},
            "port": {"type": "string"}
          }
        }
      }
    },
    "OpenAIChatRequest": {
      "type": "object",
      "required": ["model", "messages"],
      "properties": {
        "model": {"type": "string", "example": "gpt-4"},
        "messages": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "role": {"type": "string", "example": "user"},
              "content": {"type": "string", "example": "Hello!"}
            }
          }
        },
        "stream": {"type": "boolean", "example": false}
      }
    },
    "AnthropicRequest": {
      "type": "object",
      "required": ["model", "max_tokens", "messages"],
      "properties": {
        "model": {"type": "string", "example": "claude-3-5-sonnet-20241022"},
        "max_tokens": {"type": "integer", "example": 1024},
        "system": {"type": "string", "example": "You are a helpful assistant."},
        "messages": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "role": {"type": "string", "example": "user"},
              "content": {"type": "string", "example": "Hello!"}
            }
          }
        }
      }
    },
    "AnthropicResponse": {
      "type": "object",
      "properties": {
        "id": {"type": "string"},
        "type": {"type": "string", "example": "message"},
        "role": {"type": "string", "example": "assistant"},
        "model": {"type": "string"},
        "stop_reason": {"type": "string", "example": "end_turn"},
        "content": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "type": {"type": "string", "example": "text"},
              "text": {"type": "string"}
            }
          }
        }
      }
    },
    "ErrorResponse": {
      "type": "object",
      "properties": {
        "error": {"type": "string", "example": "upstream error: connection refused"}
      }
    }
  },
  "securityDefinitions": {
    "BearerAuth": {
      "type": "apiKey",
      "name": "Authorization",
      "in": "header"
    }
  }
}