FlatkeyでGPTおよびGeminiモデルを使って画像を生成・編集する

curl https://router.flatkey.ai/v1/images/generations \
  -H "Authorization: Bearer $FLATKEY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-image-2",
    "prompt": "A futuristic cityscape at night, neon lights, wide angle",
    "size": "1024x1024"
  }'

curl https://router.flatkey.ai/v1/images/edits \
  -H "Authorization: Bearer $FLATKEY_API_KEY" \
  -F "model=gpt-image-2" \
  -F "prompt=add a small yellow star in the center" \
  -F "image=@input.png" \
  -F "mask=@mask.png"

POST https://router.flatkey.ai/v1beta/models/{model}:generateContent

curl https://router.flatkey.ai/v1beta/models/gemini-2.5-flash-image:generateContent \
  -H "Authorization: Bearer $FLATKEY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "contents": [{
      "parts": [{
        "text": "A product photo of a translucent purple glass bottle on a white background"
      }]
    }],
    "generationConfig": {
      "responseModalities": ["TEXT", "IMAGE"]
    }
  }'

pip install requests

import base64
import os
from pathlib import Path

import requests

model = "gemini-2.5-flash-image"
response = requests.post(
    f"https://router.flatkey.ai/v1beta/models/{model}:generateContent",
    headers={
        "Authorization": f"Bearer {os.environ['FLATKEY_API_KEY']}",
        "Content-Type": "application/json",
    },
    json={
        "contents": [{
            "parts": [{
                "text": "A product photo of a translucent purple glass bottle on a white background"
            }]
        }],
        "generationConfig": {
            "responseModalities": ["TEXT", "IMAGE"]
        },
    },
    timeout=180,
)
response.raise_for_status()

parts = response.json()["candidates"][0]["content"]["parts"]
image = next(part["inlineData"] for part in parts if "inlineData" in part)
suffix = ".jpg" if image["mimeType"] == "image/jpeg" else ".png"
output = Path(f"generated{suffix}")
output.write_bytes(base64.b64decode(image["data"]))
print(output)

import { writeFileSync } from "node:fs";

const model = "gemini-2.5-flash-image";
const response = await fetch(
  `https://router.flatkey.ai/v1beta/models/${model}:generateContent`,
  {
    method: "POST",
    headers: {
      Authorization: `Bearer ${process.env.FLATKEY_API_KEY}`,
      "Content-Type": "application/json",
    },
    body: JSON.stringify({
      contents: [{
        parts: [{
          text: "A product photo of a translucent purple glass bottle on a white background",
        }],
      }],
      generationConfig: {
        responseModalities: ["TEXT", "IMAGE"],
      },
    }),
  },
);

if (!response.ok) {
  throw new Error(`${response.status}: ${await response.text()}`);
}

const result = await response.json();
const image = result.candidates[0].content.parts.find(
  (part) => part.inlineData,
).inlineData;
const suffix = image.mimeType === "image/jpeg" ? "jpg" : "png";
writeFileSync(`generated.${suffix}`, Buffer.from(image.data, "base64"));

{
  "candidates": [
    {
      "content": {
        "parts": [
          {
            "text": "Here is the generated image."
          },
          {
            "inlineData": {
              "mimeType": "image/png",
              "data": "iVBORw0KGgoAAA..."
            }
          }
        ]
      }
    }
  ]
}