{
  "openapi": "3.1.0",
  "info": {
    "title": "Country",
    "description": "IP geolocation API",
    "version": "4.2.3"
  },
  "paths": {
    "/": {
      "get": {
        "summary": "Look up the caller's IP",
        "description": "Resolves the country of the caller's IP address. When behind Cloudflare, the CF-IPCountry header is preferred.",
        "parameters": [
          {
            "$ref": "#/components/parameters/fields"
          }
        ],
        "responses": {
          "200": {
            "description": "Successful lookup",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/LookupResult"
                }
              }
            }
          },
          "404": {
            "$ref": "#/components/responses/NotFound"
          }
        }
      },
      "post": {
        "summary": "Batch lookup",
        "description": "Look up multiple IPs in a single request. Maximum 100 IPs per request.",
        "parameters": [
          {
            "$ref": "#/components/parameters/fields"
          }
        ],
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "array",
                "items": {
                  "type": "string",
                  "format": "ipv4 or ipv6"
                },
                "maxItems": 100,
                "example": ["8.8.8.8", "1.1.1.1"]
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Array of lookup results. IPs without a match are omitted.",
            "content": {
              "application/json": {
                "schema": {
                  "type": "array",
                  "items": {
                    "$ref": "#/components/schemas/LookupResult"
                  }
                }
              }
            }
          },
          "422": {
            "$ref": "#/components/responses/UnprocessableEntity"
          }
        }
      }
    },
    "/{ip}": {
      "get": {
        "summary": "Look up a specific IP",
        "parameters": [
          {
            "name": "ip",
            "in": "path",
            "required": true,
            "schema": {
              "type": "string",
              "format": "ipv4 or ipv6"
            },
            "example": "8.8.8.8"
          },
          {
            "$ref": "#/components/parameters/fields"
          }
        ],
        "responses": {
          "200": {
            "description": "Successful lookup",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/LookupResult"
                }
              }
            }
          },
          "404": {
            "$ref": "#/components/responses/NotFound"
          },
          "422": {
            "$ref": "#/components/responses/UnprocessableEntity"
          }
        }
      }
    },
    "/info": {
      "get": {
        "summary": "Service info",
        "responses": {
          "200": {
            "description": "Service metadata",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "version": {
                      "type": "string",
                      "example": "4.2.3"
                    },
                    "dataSources": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      },
                      "example": ["maxmind", "cloudflare"]
                    },
                    "lastUpdated": {
                      "type": "string",
                      "format": "date-time"
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "parameters": {
      "fields": {
        "name": "fields",
        "in": "query",
        "description": "Comma-separated list of extra fields to include. Valid values: city, continent, subdivision, postal, location, asn.",
        "schema": {
          "type": "string",
          "example": "city,asn"
        }
      }
    },
    "schemas": {
      "LookupResult": {
        "type": "object",
        "required": ["ip", "country"],
        "properties": {
          "ip": {
            "type": "string",
            "example": "8.8.8.8"
          },
          "country": {
            "type": "string",
            "nullable": true,
            "example": "US"
          },
          "city": {
            "type": "string",
            "nullable": true,
            "example": "Mountain View"
          },
          "continent": {
            "type": "string",
            "nullable": true,
            "example": "NA"
          },
          "subdivision": {
            "type": "string",
            "nullable": true,
            "example": "CA"
          },
          "postal": {
            "type": "string",
            "nullable": true,
            "example": "94043"
          },
          "location": {
            "type": "object",
            "nullable": true,
            "properties": {
              "latitude": {
                "type": "number",
                "example": 37.386
              },
              "longitude": {
                "type": "number",
                "example": -122.0838
              },
              "accuracy_radius": {
                "type": "integer",
                "example": 1000
              },
              "time_zone": {
                "type": "string",
                "nullable": true,
                "example": "America/Los_Angeles"
              }
            }
          },
          "asn": {
            "type": "object",
            "nullable": true,
            "properties": {
              "number": {
                "type": "integer",
                "example": 15169
              },
              "organization": {
                "type": "string",
                "example": "Google LLC"
              }
            }
          }
        }
      }
    },
    "responses": {
      "NotFound": {
        "description": "IP could not be resolved",
        "content": {
          "application/json": {
            "schema": {
              "type": "object",
              "properties": {
                "error": {
                  "type": "object",
                  "properties": {
                    "code": {
                      "type": "integer",
                      "example": 404
                    },
                    "message": {
                      "type": "string",
                      "example": "Not Found"
                    }
                  }
                }
              }
            }
          }
        }
      },
      "UnprocessableEntity": {
        "description": "Invalid input",
        "content": {
          "application/json": {
            "schema": {
              "type": "object",
              "properties": {
                "error": {
                  "type": "object",
                  "properties": {
                    "code": {
                      "type": "integer",
                      "example": 422
                    },
                    "message": {
                      "type": "string",
                      "example": "Unprocessable Entity"
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}