# Top-up checkout

Source: https://docs.orbytelabs.com/api-reference/subscriptions/createTopupCheckout

## POST /v1/topup-checkout

```json
{
  "operationId": "createTopupCheckout",
  "summary": "Top-up checkout",
  "tags": [
    "Subscriptions"
  ],
  "security": [
    {
      "bearerAuth": []
    }
  ],
  "requestBody": {
    "required": true,
    "content": {
      "application/json": {
        "schema": {
          "type": "object",
          "properties": {
            "identity": {
              "type": "string",
              "minLength": 1,
              "maxLength": 200
            },
            "creditKey": {
              "type": "string",
              "minLength": 1,
              "maxLength": 80,
              "pattern": "^[a-z0-9][a-z0-9_-]*$"
            },
            "amountNanocredits": {
              "type": "string",
              "maxLength": 19,
              "pattern": "^(0|[1-9][0-9]*)$"
            },
            "amountCents": {
              "type": "integer",
              "minimum": 1,
              "maximum": 99999999
            },
            "currency": {
              "type": "string",
              "pattern": "^[a-z]{3}$"
            },
            "successUrl": {
              "type": "string",
              "maxLength": 2048,
              "format": "uri"
            },
            "cancelUrl": {
              "type": "string",
              "maxLength": 2048,
              "format": "uri"
            },
            "idempotencyKey": {
              "type": "string",
              "minLength": 1,
              "maxLength": 200
            }
          },
          "required": [
            "identity",
            "creditKey",
            "amountNanocredits",
            "amountCents",
            "currency",
            "successUrl",
            "cancelUrl",
            "idempotencyKey"
          ],
          "additionalProperties": false
        }
      }
    }
  },
  "responses": {
    "200": {
      "description": "Hosted checkout; balance changes only after confirmed payment",
      "content": {
        "application/json": {
          "schema": {
            "type": "object",
            "properties": {
              "id": {
                "type": "string"
              },
              "url": {
                "type": "string"
              }
            },
            "required": [
              "id",
              "url"
            ],
            "additionalProperties": false
          }
        }
      }
    },
    "400": {
      "description": "Invalid request",
      "content": {
        "application/json": {
          "schema": {
            "type": "object",
            "properties": {
              "error": {
                "type": "string"
              },
              "message": {
                "type": "string"
              }
            },
            "required": [
              "error",
              "message"
            ],
            "additionalProperties": false
          }
        }
      }
    },
    "401": {
      "description": "Missing, expired, or revoked API key",
      "content": {
        "application/json": {
          "schema": {
            "type": "object",
            "properties": {
              "error": {
                "type": "string"
              },
              "message": {
                "type": "string"
              }
            },
            "required": [
              "error",
              "message"
            ],
            "additionalProperties": false
          }
        }
      }
    },
    "403": {
      "description": "Insufficient permission or unsupported key kind",
      "content": {
        "application/json": {
          "schema": {
            "type": "object",
            "properties": {
              "error": {
                "type": "string"
              },
              "message": {
                "type": "string"
              }
            },
            "required": [
              "error",
              "message"
            ],
            "additionalProperties": false
          }
        }
      }
    },
    "404": {
      "description": "Resource not found",
      "content": {
        "application/json": {
          "schema": {
            "type": "object",
            "properties": {
              "error": {
                "type": "string"
              },
              "message": {
                "type": "string"
              }
            },
            "required": [
              "error",
              "message"
            ],
            "additionalProperties": false
          }
        }
      }
    },
    "409": {
      "description": "Conflict or insufficient balance",
      "content": {
        "application/json": {
          "schema": {
            "type": "object",
            "properties": {
              "error": {
                "type": "string"
              },
              "message": {
                "type": "string"
              }
            },
            "required": [
              "error",
              "message"
            ],
            "additionalProperties": false
          }
        }
      }
    },
    "413": {
      "description": "Body exceeds 16 KiB",
      "content": {
        "application/json": {
          "schema": {
            "type": "object",
            "properties": {
              "error": {
                "type": "string"
              },
              "message": {
                "type": "string"
              }
            },
            "required": [
              "error",
              "message"
            ],
            "additionalProperties": false
          }
        }
      }
    },
    "415": {
      "description": "Content-Type must be application/json",
      "content": {
        "application/json": {
          "schema": {
            "type": "object",
            "properties": {
              "error": {
                "type": "string"
              },
              "message": {
                "type": "string"
              }
            },
            "required": [
              "error",
              "message"
            ],
            "additionalProperties": false
          }
        }
      }
    },
    "422": {
      "description": "Unsupported pricing or billing configuration",
      "content": {
        "application/json": {
          "schema": {
            "type": "object",
            "properties": {
              "error": {
                "type": "string"
              },
              "message": {
                "type": "string"
              }
            },
            "required": [
              "error",
              "message"
            ],
            "additionalProperties": false
          }
        }
      }
    },
    "429": {
      "description": "Rate limit exceeded; see Retry-After",
      "content": {
        "application/json": {
          "schema": {
            "type": "object",
            "properties": {
              "error": {
                "type": "string"
              },
              "message": {
                "type": "string"
              }
            },
            "required": [
              "error",
              "message"
            ],
            "additionalProperties": false
          }
        }
      }
    },
    "500": {
      "description": "Unexpected server error",
      "content": {
        "application/json": {
          "schema": {
            "type": "object",
            "properties": {
              "error": {
                "type": "string"
              },
              "message": {
                "type": "string"
              }
            },
            "required": [
              "error",
              "message"
            ],
            "additionalProperties": false
          }
        }
      }
    }
  }
}
```

Complete schema: [OpenAPI 3.1 document](https://docs.orbytelabs.com/openapi.json)