{
  "openapi": "3.0.0",
  "info": {
    "title": "API with Security Schemes",
    "description": "An API that demonstrates various security schemes",
    "version": "1.0.0"
  },
  "servers": [
    {
      "url": "https://api.example.com/v1",
      "description": "Production server"
    }
  ],
  "security": [
    {
      "bearerAuth": []
    }
  ],
  "components": {
    "securitySchemes": {
      "bearerAuth": {
        "type": "http",
        "scheme": "bearer",
        "description": "Bearer token authentication"
      },
      "basicAuth": {
        "type": "http",
        "scheme": "basic",
        "description": "Basic authentication"
      },
      "apiKey": {
        "type": "apiKey",
        "in": "header",
        "name": "X-API-Key",
        "description": "API Key authentication"
      },
      "oauth2": {
        "type": "oauth2",
        "flows": {
          "authorizationCode": {
            "authorizationUrl": "https://auth.example.com/oauth/authorize",
            "tokenUrl": "https://auth.example.com/oauth/token",
            "scopes": {
              "read": "Read access",
              "write": "Write access",
              "admin": "Admin access"
            }
          }
        },
        "description": "OAuth 2.0 authentication"
      }
    }
  },
  "paths": {
    "/users": {
      "get": {
        "summary": "Get users",
        "description": "Retrieve a list of users",
        "security": [
          {
            "bearerAuth": []
          }
        ],
        "responses": {
          "200": {
            "description": "Successful response",
            "content": {
              "application/json": {
                "schema": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "properties": {
                      "id": {
                        "type": "integer"
                      },
                      "name": {
                        "type": "string"
                      },
                      "email": {
                        "type": "string"
                      }
                    }
                  }
                }
              }
            }
          }
        }
      },
      "post": {
        "summary": "Create user",
        "description": "Create a new user",
        "security": [
          {
            "bearerAuth": []
          }
        ],
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "properties": {
                  "name": {
                    "type": "string"
                  },
                  "email": {
                    "type": "string"
                  }
                },
                "required": ["name", "email"]
              }
            }
          }
        },
        "responses": {
          "201": {
            "description": "User created",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "id": {
                      "type": "integer"
                    },
                    "name": {
                      "type": "string"
                    },
                    "email": {
                      "type": "string"
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "/admin/users": {
      "get": {
        "summary": "Admin get users",
        "description": "Retrieve all users (admin only)",
        "security": [
          {
            "oauth2": ["admin"]
          }
        ],
        "responses": {
          "200": {
            "description": "Successful response",
            "content": {
              "application/json": {
                "schema": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "properties": {
                      "id": {
                        "type": "integer"
                      },
                      "name": {
                        "type": "string"
                      },
                      "email": {
                        "type": "string"
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "/public/data": {
      "get": {
        "summary": "Get public data",
        "description": "Retrieve public data without authentication",
        "security": [],
        "responses": {
          "200": {
            "description": "Successful response",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "message": {
                      "type": "string"
                    },
                    "timestamp": {
                      "type": "string"
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}