MCP / Models / Image generation

Seedream 4.0 MCP: 2K images and edits with no API key

ByteDance Seedream 4.0 makes images from a prompt or edits one or two pictures you supply, at 2K sizes from square to panoramic. Run it from Claude Code, Codex, Cursor or any MCP client through one FlyMy.AI MCP, or call its API.

Use Seedream 4.0Inputs and price
No API key$0.03 / runText and image to imageByteDanceCommercial use
Seedream 4.0 sample from the FlyMy.AI catalog

$ YOUR NEXT RUN

Claude CodeCodexCursorAny agent

Use Seedream 4.0 in your assistant

Paste this prompt into Claude Code, Codex, Cursor or any agent. It reads the guide and helps you connect.

Read https://flymy.ai/skill.md and https://flymy.ai/mcp/models/bytedance-seedream.md. Help me connect the FlyMy.AI MCP to this assistant, then run Seedream 4.0 (flymyai/bytedance-seedream) for this task: Generate an product photo of a red vintage bicycle against a pastel wall with Seedream 4.0.
Open FlyMy.AIDownload brief

What Seedream 4.0 does

Seedream 4.0 handles generation and editing in one model: give it only a prompt to create an image, or add image and image1 to restyle, combine or change them. Pick one of eight output sizes, from 2048x2048 square to 3024x1296 panoramic, and turn the watermark on or off. Newer Seedream versions (4.5, 5.0 Lite and 5.0 Pro) are on FlyMy.AI too.

Seedream 4.0 inputs

Every input of flymyai/bytedance-seedream as its live schema lists them. Returns image (file).

InputType, values and default
# prompt
string required
# image, image1
file optional Allowed: image file, as a URL or upload
# size
string optional Allowed: 2048x2048, 2304x1728, 1728x2304, 2560x1440, 1440x2560, 2496x1664, 1664x2496, 3024x1296
# watermark
boolean optional Default: false

Ask your agent

Requests to paste as they are, once the FlyMy.AI MCP is connected.

“Generate an product photo of a red vintage bicycle against a pastel wall with Seedream 4.0.”runs flymyai/bytedance-seedream
“Make three versions of a poster for a yoga class in the park with Seedream 4.0 and send me the links.”runs flymyai/bytedance-seedream
“Use Seedream 4.0 to place the product from the photo I attach on a busy cafe table by the window.”runs flymyai/bytedance-seedream

Seedream 4.0 price

$0.03 per run. A run at the default settings costs $0.03. Billed to your FlyMy.AI balance; no seats, no subscription and no minimum.

See usage pricing →

Call Seedream 4.0 from code

The same model, from an agent or from your own code. Keys stay in your FlyMy.AI account.

From an agent, through the MCP

The agent calls get_model_schema, then run_model with:

{
  "endpoint_id": "flymyai/bytedance-seedream",
  "input": {
    "prompt": "A ceramic mug on a sunlit kitchen counter, product photo"
  }
}

From your code, over HTTP

Form fields, not JSON; files go as uploads or public URLs. The answer is a prediction_id; read the result at https://api.flymy.ai/api/v1/flymyai/bytedance-seedream/predict/async/result/?request_id=<prediction_id>.

curl -X POST https://api.flymy.ai/api/v1/flymyai/bytedance-seedream/predict/async/ \
  -H "X-API-KEY: $FLYMYAI_API_KEY" \
  -F 'prompt=A ceramic mug on a sunlit kitchen counter, product photo'

Questions about Seedream 4.0

Do I need a ByteDance API key for Seedream 4.0?

No. Seedream 4.0 runs on FlyMy.AI's account, so you need no ByteDance key or plan: sign in to FlyMy.AI once and each run is billed to your FlyMy.AI balance.

How much does Seedream 4.0 cost?

$0.03 per run. There is no subscription or minimum; the price comes from FlyMy.AI billing and was checked on 2026-11-09.

How do I use Seedream 4.0 in Claude Code, Codex or Cursor?

Add the FlyMy.AI MCP with one command and sign in, then ask in plain words, for example: "Generate an product photo of a red vintage bicycle against a pastel wall with Seedream 4.0." Your agent reads the inputs with get_model_schema and runs flymyai/bytedance-seedream with run_model.

What does Seedream 4.0 need as input?

Seedream 4.0 requires prompt; it also takes 4 optional inputs, each listed on this page with its allowed values and default.

Can I call Seedream 4.0 from my own code?

Yes. Send form fields to https://api.flymy.ai/api/v1/flymyai/bytedance-seedream/predict/async/ with your FlyMy.AI API key in the X-API-KEY header.

Go to the source

Seedream 4.0 in the playground →Model endpoints in the docs →Image generation guide →Every model on FlyMy.AI →Every MCP in the catalog →Usage pricing →

From the FlyMy.AI model catalog of 2026-11-09: inputs from the model's live schema, prices from FlyMy.AI billing. Requests are examples to paste, not recorded runs.