---
title: Midjourney Image-to-Prompt
url: https://runapi.ai/docs/api/midjourney/image-to-prompt.md
canonical: https://runapi.ai/docs/api/midjourney/image-to-prompt
locale: en
---

# Midjourney Image-to-Prompt

## Overview

Use the image to prompt endpoint and read the result from the same response.

### Quick start

1. Create an API key and set it as RUNAPI_API_KEY.
2. Send a POST request whose body matches the request schema.
3. Read the result from the successful response body.

## Endpoint

POST /api/v1/midjourney/image_to_prompt

Base URL: https://runapi.ai

API version: v1

Authentication: Authorization: Bearer YOUR_API_TOKEN

## Supported models

Open a model page for current pricing, rate limits, and commercial-usage details.

- [Midjourney](/models/midjourney)

## Request schema

Send only the fields declared for this endpoint.

### Request body

```json
{
  "source_image_url": {
    "required": true,
    "type": "string"
  }
}
```

## Success response

HTTP 200 - POST /api/v1/midjourney/image_to_prompt

### Response schema

```json
{
  "properties": {
    "billing": {
      "properties": {
        "refund": {
          "oneOf": [
            {
              "properties": {
                "refunded_at": {
                  "type": "string"
                }
              },
              "required": [
                "refunded_at"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "reservation": {
          "oneOf": [
            {
              "properties": {
                "amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "amount_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "settlement": {
          "oneOf": [
            {
              "properties": {
                "amount_micro_cents": {
                  "type": "integer"
                },
                "charged_amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "charged_amount_cents",
                "amount_micro_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        }
      },
      "required": [
        "reservation",
        "settlement",
        "refund"
      ],
      "type": "object",
      "unevaluatedProperties": false
    },
    "prompts": {
      "items": {
        "type": "string"
      },
      "maxItems": 4,
      "minItems": 4,
      "type": "array"
    }
  },
  "required": [
    "prompts",
    "billing"
  ],
  "type": "object",
  "unevaluatedProperties": false
}
```

### Response example

```json
{
  "billing": {
    "refund": null,
    "reservation": null,
    "settlement": null
  },
  "prompts": [
    "A quiet coastal town at sunrise in a painterly style.",
    "A cinematic sunrise above a calm seaside village.",
    "Warm morning light over a peaceful coastal settlement.",
    "An atmospheric seaside town beneath a golden sky."
  ]
}
```

## Errors

HTTP 401 - POST /api/v1/midjourney/image_to_prompt

This response has no body.

## Errors

HTTP 400 - POST /api/v1/midjourney/image_to_prompt

### Response schema

```json
{
  "properties": {
    "billing": {
      "properties": {
        "refund": {
          "oneOf": [
            {
              "properties": {
                "refunded_at": {
                  "type": "string"
                }
              },
              "required": [
                "refunded_at"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "reservation": {
          "oneOf": [
            {
              "properties": {
                "amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "amount_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "settlement": {
          "oneOf": [
            {
              "properties": {
                "amount_micro_cents": {
                  "type": "integer"
                },
                "charged_amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "charged_amount_cents",
                "amount_micro_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        }
      },
      "required": [
        "reservation",
        "settlement",
        "refund"
      ],
      "type": "object",
      "unevaluatedProperties": false
    },
    "error": {
      "properties": {
        "code": {
          "type": "string"
        },
        "message": {
          "type": "string"
        }
      },
      "required": [
        "code",
        "message"
      ],
      "type": "object",
      "unevaluatedProperties": false
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}
```

### Response example

```json
{
  "error": {
    "code": "source_image_url_is_required",
    "message": "source_image_url is required"
  }
}
```

## Errors

HTTP 402 - POST /api/v1/midjourney/image_to_prompt

### Response schema

```json
{
  "properties": {
    "billing": {
      "properties": {
        "refund": {
          "oneOf": [
            {
              "properties": {
                "refunded_at": {
                  "type": "string"
                }
              },
              "required": [
                "refunded_at"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "reservation": {
          "oneOf": [
            {
              "properties": {
                "amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "amount_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "settlement": {
          "oneOf": [
            {
              "properties": {
                "amount_micro_cents": {
                  "type": "integer"
                },
                "charged_amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "charged_amount_cents",
                "amount_micro_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        }
      },
      "required": [
        "reservation",
        "settlement",
        "refund"
      ],
      "type": "object",
      "unevaluatedProperties": false
    },
    "error": {
      "properties": {
        "code": {
          "type": "string"
        },
        "message": {
          "type": "string"
        }
      },
      "required": [
        "code",
        "message"
      ],
      "type": "object",
      "unevaluatedProperties": false
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}
```

### Response example

```json
{
  "error": {
    "code": "insufficient_balance",
    "message": "Insufficient balance"
  }
}
```

## Errors

HTTP 403 - POST /api/v1/midjourney/image_to_prompt

### Response schema

```json
{
  "properties": {
    "billing": {
      "properties": {
        "refund": {
          "oneOf": [
            {
              "properties": {
                "refunded_at": {
                  "type": "string"
                }
              },
              "required": [
                "refunded_at"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "reservation": {
          "oneOf": [
            {
              "properties": {
                "amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "amount_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "settlement": {
          "oneOf": [
            {
              "properties": {
                "amount_micro_cents": {
                  "type": "integer"
                },
                "charged_amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "charged_amount_cents",
                "amount_micro_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        }
      },
      "required": [
        "reservation",
        "settlement",
        "refund"
      ],
      "type": "object",
      "unevaluatedProperties": false
    },
    "error": {
      "properties": {
        "code": {
          "type": "string"
        },
        "message": {
          "type": "string"
        }
      },
      "required": [
        "code",
        "message"
      ],
      "type": "object",
      "unevaluatedProperties": false
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}
```

### Response example

```json
{
  "error": {
    "code": "api_token_credit_limit_exceeded",
    "message": "API key credit limit exceeded"
  }
}
```

## Errors

HTTP 409 - POST /api/v1/midjourney/image_to_prompt

### Response schema

```json
{
  "properties": {
    "billing": {
      "properties": {
        "refund": {
          "oneOf": [
            {
              "properties": {
                "refunded_at": {
                  "type": "string"
                }
              },
              "required": [
                "refunded_at"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "reservation": {
          "oneOf": [
            {
              "properties": {
                "amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "amount_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "settlement": {
          "oneOf": [
            {
              "properties": {
                "amount_micro_cents": {
                  "type": "integer"
                },
                "charged_amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "charged_amount_cents",
                "amount_micro_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        }
      },
      "required": [
        "reservation",
        "settlement",
        "refund"
      ],
      "type": "object",
      "unevaluatedProperties": false
    },
    "error": {
      "properties": {
        "code": {
          "type": "string"
        },
        "message": {
          "type": "string"
        }
      },
      "required": [
        "code",
        "message"
      ],
      "type": "object",
      "unevaluatedProperties": false
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}
```

### Response example

```json
{
  "error": {
    "code": "request_conflict",
    "message": "The request uses features that are not supported for the selected model"
  }
}
```

## Errors

HTTP 429 - POST /api/v1/midjourney/image_to_prompt

### Response schema

```json
{
  "properties": {
    "billing": {
      "properties": {
        "refund": {
          "oneOf": [
            {
              "properties": {
                "refunded_at": {
                  "type": "string"
                }
              },
              "required": [
                "refunded_at"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "reservation": {
          "oneOf": [
            {
              "properties": {
                "amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "amount_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "settlement": {
          "oneOf": [
            {
              "properties": {
                "amount_micro_cents": {
                  "type": "integer"
                },
                "charged_amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "charged_amount_cents",
                "amount_micro_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        }
      },
      "required": [
        "reservation",
        "settlement",
        "refund"
      ],
      "type": "object",
      "unevaluatedProperties": false
    },
    "error": {
      "properties": {
        "code": {
          "type": "string"
        },
        "message": {
          "type": "string"
        }
      },
      "required": [
        "code",
        "message"
      ],
      "type": "object",
      "unevaluatedProperties": false
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}
```

### Response example

```json
{
  "error": {
    "code": "rate_limited",
    "message": "Rate limit reached. Please retry later."
  }
}
```

## Errors

HTTP 503 - POST /api/v1/midjourney/image_to_prompt

### Response schema

```json
{
  "properties": {
    "billing": {
      "properties": {
        "refund": {
          "oneOf": [
            {
              "properties": {
                "refunded_at": {
                  "type": "string"
                }
              },
              "required": [
                "refunded_at"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "reservation": {
          "oneOf": [
            {
              "properties": {
                "amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "amount_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "settlement": {
          "oneOf": [
            {
              "properties": {
                "amount_micro_cents": {
                  "type": "integer"
                },
                "charged_amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "charged_amount_cents",
                "amount_micro_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        }
      },
      "required": [
        "reservation",
        "settlement",
        "refund"
      ],
      "type": "object",
      "unevaluatedProperties": false
    },
    "error": {
      "properties": {
        "code": {
          "type": "string"
        },
        "message": {
          "type": "string"
        }
      },
      "required": [
        "code",
        "message"
      ],
      "type": "object",
      "unevaluatedProperties": false
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}
```

### Response example

```json
{
  "error": {
    "code": "pricing_is_pending_for_this_endpoint",
    "message": "Pricing is pending for this endpoint"
  }
}
```

## Errors

HTTP 504 - POST /api/v1/midjourney/image_to_prompt

### Response schema

```json
{
  "properties": {
    "billing": {
      "properties": {
        "refund": {
          "oneOf": [
            {
              "properties": {
                "refunded_at": {
                  "type": "string"
                }
              },
              "required": [
                "refunded_at"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "reservation": {
          "oneOf": [
            {
              "properties": {
                "amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "amount_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "settlement": {
          "oneOf": [
            {
              "properties": {
                "amount_micro_cents": {
                  "type": "integer"
                },
                "charged_amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "charged_amount_cents",
                "amount_micro_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        }
      },
      "required": [
        "reservation",
        "settlement",
        "refund"
      ],
      "type": "object",
      "unevaluatedProperties": false
    },
    "error": {
      "properties": {
        "code": {
          "type": "string"
        },
        "message": {
          "type": "string"
        }
      },
      "required": [
        "code",
        "message"
      ],
      "type": "object",
      "unevaluatedProperties": false
    }
  },
  "required": [
    "error"
  ],
  "type": "object",
  "unevaluatedProperties": false
}
```

### Response example

```json
{
  "billing": {
    "refund": null,
    "reservation": null,
    "settlement": null
  },
  "error": {
    "code": "timeout_error",
    "message": "The request timed out"
  }
}
```

## Errors

HTTP 502 - POST /api/v1/midjourney/image_to_prompt

### Response schema

```json
{
  "properties": {
    "billing": {
      "properties": {
        "refund": {
          "oneOf": [
            {
              "properties": {
                "refunded_at": {
                  "type": "string"
                }
              },
              "required": [
                "refunded_at"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "reservation": {
          "oneOf": [
            {
              "properties": {
                "amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "amount_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        },
        "settlement": {
          "oneOf": [
            {
              "properties": {
                "amount_micro_cents": {
                  "type": "integer"
                },
                "charged_amount_cents": {
                  "type": "integer"
                }
              },
              "required": [
                "charged_amount_cents",
                "amount_micro_cents"
              ],
              "type": "object",
              "unevaluatedProperties": false
            },
            {
              "enum": [
                null
              ]
            }
          ]
        }
      },
      "required": [
        "reservation",
        "settlement",
        "refund"
      ],
      "type": "object",
      "unevaluatedProperties": false
    },
    "error": {
      "type": "string"
    }
  },
  "required": [
    "error",
    "billing"
  ],
  "type": "object",
  "unevaluatedProperties": false
}
```

### Response example

```json
{
  "billing": {
    "refund": null,
    "reservation": null,
    "settlement": null
  },
  "error": "Bad Gateway"
}
```

## Generated Code Samples

Use cURL directly, or install an SDK for your language. Each sample submits the validated request shown in this reference.

### curl

```curl
curl -X POST https://runapi.ai/api/v1/midjourney/image_to_prompt \
  -H 'Authorization: Bearer YOUR_API_TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{"source_image_url":"https://cdn.runapi.ai/public/samples/image.jpg"}'
```

### javascript

#### Install

```bash
npm install @runapi.ai/midjourney
```

```javascript
import { MidjourneyClient } from "@runapi.ai/midjourney";

const client = new MidjourneyClient({ apiKey: process.env.RUNAPI_API_KEY });
const result = await client.imageToPrompt.run({
  "source_image_url": "https://cdn.runapi.ai/public/samples/image.jpg"
});
```

### python

#### Install

```bash
pip install runapi-midjourney
```

```python
import os
from runapi.midjourney import MidjourneyClient

client = MidjourneyClient(api_key=os.environ["RUNAPI_API_KEY"])
result = client.image_to_prompt.run(
  source_image_url="https://cdn.runapi.ai/public/samples/image.jpg"
)
```

### go

#### Install

```bash
go get github.com/runapi-ai/midjourney-sdk/go@latest
```

```go
package main

import (
  "context"
  "log"
  "os"

  "github.com/runapi-ai/core-sdk/go/option"
  midjourney "github.com/runapi-ai/midjourney-sdk/go/midjourney"
)

func main() {
  client, err := midjourney.NewClient(option.WithAPIKey(os.Getenv("RUNAPI_API_KEY")))
  if err != nil {
    log.Fatal(err)
  }

  result, err := client.ImageToPrompt.Run(context.Background(), midjourney.ImageToPromptParams{
    SourceImageURL: "https://cdn.runapi.ai/public/samples/image.jpg",
  })
  if err != nil {
    log.Fatal(err)
  }
  _ = result
}
```

### ruby

#### Install

```bash
gem install runapi-midjourney
```

```ruby
require "runapi/midjourney"

client = RunApi::Midjourney::Client.new(api_key: ENV.fetch("RUNAPI_API_KEY"))
result = client.image_to_prompt.run(
  source_image_url: "https://cdn.runapi.ai/public/samples/image.jpg"
)
```

### java

#### Install

```kotlin
implementation("ai.runapi:runapi-midjourney")
```

```java
import ai.runapi.midjourney.MidjourneyClient;
import ai.runapi.midjourney.types.ImageToPromptParams;
import ai.runapi.midjourney.types.ImageToPromptResponse;

public final class Example {
  public static void main(String[] args) {
    MidjourneyClient client = MidjourneyClient.builder()
        .apiKey(System.getenv("RUNAPI_API_KEY"))
        .build();
    ImageToPromptResponse result = client.imageToPrompt().run(
        ImageToPromptParams.builder()
        .sourceImageUrl("https://cdn.runapi.ai/public/samples/image.jpg")
            .build()
    );
  }
}
```

### php

#### Install

```bash
composer require runapi-ai/midjourney
```

```php
<?php

require __DIR__ . '/vendor/autoload.php';

use RunApi\Core\ClientOptions;
use RunApi\Midjourney\MidjourneyClient;

$client = new MidjourneyClient(new ClientOptions(apiKey: getenv('RUNAPI_API_KEY')));
$result = $client->imageToPrompt->run([
  "source_image_url" => "https://cdn.runapi.ai/public/samples/image.jpg"
]);
```

## Related Guides

- [Authentication](/docs/guides/authentication)
- [Quickstart](/docs/guides/task-api/quickstart)