Image Editing

Designed for fast image editing, local inpainting, style transfer, and wide-aspect creative asset revisions.

Authorization

BearerAuth

AuthorizationBearer <token>

Model relay interface recognition. Request heading: Autoration: Bearer .

In: header

Path Parameters

model*string

Gemini model name.

Default"gemini-3.1-flash-image-preview"

Enter an array of content to carry one or more rounds of messages between users, models or tools. Each element is a Content object, usually consisting of __ FD_PROTECT_0 __ and __ FD_PROTECT_1 __: __ FD_PROTECT_2 __, commonly known as _ FD_PROTECT_3 __, _ FD_PROTECT_4 __, single-cycle user_9 _ with _ FD_PROTECT_10, _ FD_PROTECT_11 __, _ FD_PROTECT_12 __, _ FD_PRT_13 _ _ _ _ _ _FCED_14 Applies to scenarios such as text conversations, image/audio/video/document understanding, function calls and multimodular generation. The number of arrays and media sizes are based on upstream model and operational configuration limits.

systemInstruction?object

Gemini system command.

generationConfig?

Generates configurations such as temperature, TopK, TopP, maximum output length.

safetySettings?

Security policy settings. List of safetySettings. Scope: An array length is based on upstream or business configuration.

tools?

Gemini tool definition. . Scope: The length of arrays and the complexity of schema are based on upstream limits.

Response Body

application/json

curl -X POST "https://api.tokaify.com/v1beta/models/gemini-3.1-flash-image-preview:generateContent" \
  -H "Content-Type: application/json" \
  -d '{
    "contents": [
      {
        "parts": [
          {
            "text": "Writing a four-word Chinese short poem on the theme of urban night rain."
          }
        ]
      }
    ],
    "generationConfig": {
      "temperature": 0.7,
      "maxOutputTokens": 100000
    }
  }'

curl -X POST "https://api.tokaify.com/v1beta/models/gemini-3.1-flash-image-preview:generateContent" \  -H "Content-Type: application/json" \  -d '{    "contents": [      {        "parts": [          {            "text": "Writing a four-word Chinese short poem on the theme of urban night rain."          }        ]      }    ],    "generationConfig": {      "temperature": 0.7,      "maxOutputTokens": 100000    }  }'

{
  "candidates": [],
  "usageMetadata": {},
  "modelVersion": "string"
}

Request Parameters

Field	Type	Required	Default	Description
`contents`	array	Yes	None	Gemini content array including edit instructions and the input image.
`contents[].parts[].text`	string	Yes	None	Edit instruction.
`contents[].parts[].inline_data`	object	Yes	None	Input image containing `mime_type` and Base64 `data`.
`generationConfig.responseModalities`	string[]	No	`["TEXT","IMAGE"]`	Recommended value: `["IMAGE"]`.
`generationConfig.imageConfig.aspectRatio`	string	No	`1:1`	Supports `1:1`, `1:4`, `1:8`, `2:3`, `3:2`, `3:4`, `4:1`, `4:3`, `4:5`, `5:4`, `8:1`, `9:16`, `16:9`, and `21:9`.

Example Code

curl "https://api.tokaify.com/v1beta/models/gemini-3.1-flash-image-preview:generateContent" \
  -H "Authorization: Bearer $TOKAIFY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "contents": [{
      "role": "user",
      "parts": [
        { "text": "Extend the image into a 21:9 banner, keep the main subject on the left, and leave title space on the right." },
        { "inline_data": { "mime_type": "image/png", "data": "BASE64_IMAGE" } }
      ]
    }],
    "generationConfig": {
      "responseModalities": ["IMAGE"],
      "imageConfig": { "aspectRatio": "21:9" }
    }
  }'

import requests

response = requests.post(
    "https://api.tokaify.com/v1beta/models/gemini-3.1-flash-image-preview:generateContent",
    headers={"Authorization": "Bearer YOUR_TOKAIFY_API_KEY"},
    json={
        "contents": [{"role": "user", "parts": [
            {"text": "Extend the image into a 21:9 banner, keep the main subject on the left, and leave title space on the right."},
            {"inline_data": {"mime_type": "image/png", "data": "BASE64_IMAGE"}},
        ]}],
        "generationConfig": {"responseModalities": ["IMAGE"], "imageConfig": {"aspectRatio": "21:9"}},
    },
)
print(response.json())

const response = await fetch("https://api.tokaify.com/v1beta/models/gemini-3.1-flash-image-preview:generateContent", {
  method: "POST",
  headers: { Authorization: `Bearer ${process.env.TOKAIFY_API_KEY}`, "Content-Type": "application/json" },
  body: JSON.stringify({
    contents: [{ role: "user", parts: [
      { text: "Extend the image into a 21:9 banner, keep the main subject on the left, and leave title space on the right." },
      { inline_data: { mime_type: "image/png", data: "BASE64_IMAGE" } },
    ] }],
    generationConfig: { responseModalities: ["IMAGE"], imageConfig: { aspectRatio: "21:9" } },
  }),
});
console.log(await response.json());

Response Example

{
  "candidates": [
    {
      "content": {
        "role": "model",
        "parts": [{ "inlineData": { "mimeType": "image/png", "data": "iVBORw0KGgoAAAANSUhEUg..." } }]
      },
      "finishReason": "STOP"
    }
  ]
}

Notes

Billing follows the configured model and channel ratios. Extreme aspect-ratio edits may reduce the stability of subject details.