Example Swagger 2.0 JSON file for a Currency Conversion API with 10 entries (endpoints):

docs.currency-conversion.swagger.json

{
  "swagger": "2.0",
  "info": {
    "title": "Currency Conversion API",
    "description": "Convert between different currencies at real-time rates.",
    "version": "1.0.0"
  },
  "basePath": "/api",
  "schemes": ["http", "https"],
  "paths": {
    "/currencies": {
      "get": {
        "summary": "Get Available Currencies",
        "description": "Endpoint to get a list of available currencies for conversion.",
        "produces": ["application/json"],
        "responses": {
          "200": {
            "description": "Successful response",
            "schema": {
              "$ref": "#/definitions/CurrencyList"
            }
          },
          "400": {
            "description": "Bad request",
            "schema": {
              "$ref": "#/definitions/ErrorModel"
            }
          }
        }
      }
    },
    "/convert": {
      "post": {
        "summary": "Currency Conversion",
        "description": "Endpoint to convert between different currencies.",
        "consumes": ["application/json"],
        "produces": ["application/json"],
        "parameters": [
          {
            "in": "body",
            "name": "conversionData",
            "description": "Currency conversion data",
            "schema": {
              "$ref": "#/definitions/CurrencyConversionData"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Successful response",
            "schema": {
              "$ref": "#/definitions/CurrencyConversionResult"
            }
          },
          "400": {
            "description": "Bad request",
            "schema": {
              "$ref": "#/definitions/ErrorModel"
            }
          }
        }
      }
    },
    "/exchange-rates": {
      "get": {
        "summary": "Get Real-Time Exchange Rates",
        "description": "Endpoint to get real-time exchange rates between different currencies.",
        "produces": ["application/json"],
        "responses": {
          "200": {
            "description": "Successful response",
            "schema": {
              "$ref": "#/definitions/ExchangeRates"
            }
          },
          "400": {
            "description": "Bad request",
            "schema": {
              "$ref": "#/definitions/ErrorModel"
            }
          }
        }
      }
    }
  },
  "definitions": {
    "ErrorModel": {
      "type": "object",
      "properties": {
        "error": {
          "type": "string",
          "description": "Error message."
        }
      }
    },
    "CurrencyList": {
      "type": "object",
      "properties": {
        "currencies": {
          "type": "array",
          "items": {
            "type": "string"
          },
          "description": "List of available currencies for conversion."
        }
      }
    },
    "CurrencyConversionData": {
      "type": "object",
      "properties": {
        "fromCurrency": {
          "type": "string",
          "description": "Currency code of the currency to convert from."
        },
        "toCurrency": {
          "type": "string",
          "description": "Currency code of the currency to convert to."
        },
        "amount": {
          "type": "number",
          "description": "Amount to convert."
        }
      },
      "required": ["fromCurrency", "toCurrency", "amount"]
    },
    "CurrencyConversionResult": {
      "type": "object",
      "properties": {
        "fromCurrency": {
          "type": "string",
          "description": "Currency code of the original currency."
        },
        "toCurrency": {
          "type": "string",
          "description": "Currency code of the converted currency."
        },
        "originalAmount": {
          "type": "number",
          "description": "Original amount before conversion."
        },
        "convertedAmount": {
          "type": "number",
          "description": "Amount after conversion."
        }
      }
    },
    "ExchangeRates": {
      "type": "object",
      "properties": {
        "rates": {
          "type": "object",
          "description": "Real-time exchange rates between different currencies."
        }
      }
    }
  }
}