{
  "openapi": "3.0.0",
  "info": {
    "title": "Hello GenAI API (Rust)",
    "version": "1.0.0"
  },
  "paths": {
    "/api/chat": {
      "post": {
        "summary": "Chat with the LLM",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "properties": {
                  "message": {"type": "string"}
                },
                "required": ["message"]
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Successful response",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "response": {"type": "string"}
                  }
                }
              }
            }
          },
          "400": {"description": "Invalid input"},
          "429": {"description": "Rate limit exceeded"},
          "500": {"description": "LLM API error"}
        }
      }
    },
    "/health": {
      "get": {
        "summary": "Health check",
        "responses": {
          "200": {
            "description": "Health status",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "status": {"type": "string"},
                    "timestamp": {"type": "string"}
                  }
                }
              }
            }
          }
        }
      }
    },
    "/example": {
      "get": {
        "summary": "Get example structured response",
        "responses": {
          "200": {
            "description": "Example markdown",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "response": {"type": "string"}
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}