Example Swagger 2.0 JSON file for a Credit Card Rewards API with 10 entries (endpoints):

credit-card-reward.swagger.json

{
  "swagger": "2.0",
  "info": {
    "title": "Credit Card Rewards API",
    "description": "Manage credit card rewards programs and redeem points.",
    "version": "1.0.0"
  },
  "basePath": "/api",
  "schemes": ["http", "https"],
  "paths": {
    "/rewards/catalog": {
      "get": {
        "summary": "Get Rewards Catalog",
        "description": "Endpoint to get the catalog of available rewards.",
        "produces": ["application/json"],
        "responses": {
          "200": {
            "description": "Successful response",
            "schema": {
              "$ref": "#/definitions/RewardsCatalog"
            }
          },
          "400": {
            "description": "Bad request",
            "schema": {
              "$ref": "#/definitions/ErrorModel"
            }
          }
        }
      }
    },
    "/rewards/earnings/{customerId}": {
      "get": {
        "summary": "Get Reward Earnings",
        "description": "Endpoint to get the reward points earnings for a specific customer.",
        "produces": ["application/json"],
        "parameters": [
          {
            "in": "path",
            "name": "customerId",
            "type": "string",
            "description": "ID of the customer for reward earnings retrieval."
          }
        ],
        "responses": {
          "200": {
            "description": "Successful response",
            "schema": {
              "$ref": "#/definitions/RewardEarnings"
            }
          },
          "400": {
            "description": "Bad request",
            "schema": {
              "$ref": "#/definitions/ErrorModel"
            }
          },
          "404": {
            "description": "Not found",
            "schema": {
              "$ref": "#/definitions/ErrorModel"
            }
          }
        }
      }
    },
    "/rewards/redeem": {
      "post": {
        "summary": "Redeem Reward Points",
        "description": "Endpoint to redeem reward points for a specific reward item.",
        "consumes": ["application/json"],
        "produces": ["application/json"],
        "parameters": [
          {
            "in": "body",
            "name": "redemptionData",
            "description": "Reward redemption data",
            "schema": {
              "$ref": "#/definitions/RewardRedemptionData"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Reward points redeemed successfully",
            "schema": {
              "$ref": "#/definitions/RewardRedemptionResult"
            }
          },
          "400": {
            "description": "Bad request",
            "schema": {
              "$ref": "#/definitions/ErrorModel"
            }
          },
          "404": {
            "description": "Reward item not found",
            "schema": {
              "$ref": "#/definitions/ErrorModel"
            }
          }
        }
      }
    },
    "/rewards/history/{customerId}": {
      "get": {
        "summary": "Get Reward Redemption History",
        "description": "Endpoint to get the history of reward points redemption for a specific customer.",
        "produces": ["application/json"],
        "parameters": [
          {
            "in": "path",
            "name": "customerId",
            "type": "string",
            "description": "ID of the customer for reward redemption history retrieval."
          }
        ],
        "responses": {
          "200": {
            "description": "Successful response",
            "schema": {
              "$ref": "#/definitions/RewardRedemptionHistory"
            }
          },
          "400": {
            "description": "Bad request",
            "schema": {
              "$ref": "#/definitions/ErrorModel"
            }
          },
          "404": {
            "description": "Not found",
            "schema": {
              "$ref": "#/definitions/ErrorModel"
            }
          }
        }
      }
    }
  },
  "definitions": {
    "ErrorModel": {
      "type": "object",
      "properties": {
        "error": {
          "type": "string",
          "description": "Error message."
        }
      }
    },
    "RewardsCatalog": {
      "type": "object",
      "properties": {
        "rewardItems": {
          "type": "array",
          "items": {
            "$ref": "#/definitions/RewardItem"
          },
          "description": "List of available reward items in the catalog."
        }
      }
    },
    "RewardItem": {
      "type": "object",
      "properties": {
        "itemId": {
          "type": "string",
          "description": "ID of the reward item."
        },
        "name": {
          "type": "string",
          "description": "Name of the reward item."
        },
        "pointsRequired": {
          "type": "integer",
          "description": "Number of reward points required to redeem the item."
        }
      }
    },
    "RewardEarnings": {
      "type": "object",
      "properties": {
        "customerId": {
          "type": "string",
          "description": "ID of the customer for reward earnings retrieval."
        },
        "totalPoints": {
          "type": "integer",
          "description": "Total reward points earned by the customer."
        }
      }
    },
    "RewardRedemptionData": {
      "type": "object",
      "properties": {
        "customerId": {
          "type": "string",
          "description": "ID of the customer redeeming reward points."
        },
        "itemId": {
          "type": "string",
          "description": "ID of the reward item to be redeemed."
        }
      },
      "required": ["customerId", "itemId"]
    },
    "RewardRedemptionResult": {
      "type": "object",
      "properties": {
        "redemptionId": {
          "type": "string",
          "description": "ID of the reward points redemption."
        },
        "item": {
          "type": "string",
          "description": "Name of the redeemed reward item."
        },
        "pointsUsed": {
          "type": "integer",
          "description": "Number of reward points used for redemption."
        }
      }
    },
    "RewardRedemptionHistory": {
      "type": "object",
      "properties": {
        "customerId": {
          "type": "string",
          "description": "ID of the customer for reward redemption history retrieval."
        },
        "redemptions": {
          "type": "array",
          "items": {
            "$ref": "#/definitions/RewardRedemptionResult"
          },
          "description": "List of reward points redemption history entries."
        }
      }
    }
  }
}