# imageclassic

> Four classic image models on one chute: FLUX.1-schnell + three SDXL checkpoints

This file is intended for AI coding agents wiring an application to this specific Chutes model.

## Important URLs

- Model page: https://chutes.ai/app/chute/vonkaiser-imageclassic
- Model llms.txt: https://chutes.ai/app/chute/vonkaiser-imageclassic/llms.txt
- Global Chutes llms.txt: https://chutes.ai/llms.txt
- Full Chutes docs export: https://chutes.ai/llms-full.txt
- OpenAPI schema: https://api.chutes.ai/openapi.json

## Model Identifiers

- Name: `imageclassic`
- Chute ID: `e36f0212-138c-5395-91fc-12ed21d74cb4`
- Slug: `vonkaiser-imageclassic`
- Owner: `vonkaiser`

## Authentication

- Use `Authorization: Bearer $CHUTES_API_KEY` for inference calls.
- Send JSON request bodies with `Content-Type: application/json` unless the endpoint documentation says otherwise.
- The request body is FLAT — send the request fields at the top level (no `input_args`/`args` wrapper).
- This model is served on its own host (`https://vonkaiser-imageclassic.chutes.ai`). Call the endpoint paths listed below directly.
- For base64 media fields, send raw base64 strings in API requests. The web playground may use temporary Blob upload references internally for large files before proxying to Chutes.

## Playground Notes

- The model field is required on the generic generate endpoint and must stay visible.
- Flux-style endpoints usually need fewer steps; SDXL-style checkpoints usually benefit from stronger guidance and negative prompts.

## Endpoints

### 1. POST /generate

- Base URL: `https://vonkaiser-imageclassic.chutes.ai`
- Output content type: `image/jpeg`
- Playground note: Choose the checkpoint first, then tune prompt, negative prompt, guidance, and steps for that checkpoint.

Request fields:

- `seed` (integer, optional) Default: null.
- `model` (string, required) Options: flux, dreamshaper, ilustmix, juggernaut.
- `width` (integer, optional) Default: 1024.
- `height` (integer, optional) Default: 1024.
- `prompt` (string, required)
- `guidance_scale` (number, optional) - Defaults: 3.5 for flux, 7.5 for SDXL Default: null.
- `negative_prompt` (string, optional) - SDXL only; ignored for flux Default: "".
- `num_inference_steps` (integer, optional) - Defaults: 4 for flux, 25 for SDXL Default: null.

Example call:

```bash
curl -X POST "https://vonkaiser-imageclassic.chutes.ai/generate" \
  -H "Authorization: Bearer $CHUTES_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "seed": 42,
  "model": "flux",
  "width": 1024,
  "height": 1024,
  "prompt": "a serene mountain lake at sunset",
  "negative_prompt": ""
}' \
  --output output.jpg
```

Playground presets:

- Fast Flux draft
- SDXL illustration

### 2. POST /image/flux

- Base URL: `https://vonkaiser-imageclassic.chutes.ai`
- Output content type: `image/jpeg`
- Playground note: Choose the checkpoint first, then tune prompt, negative prompt, guidance, and steps for that checkpoint.

Request fields:

- `seed` (integer, optional) Default: null.
- `width` (integer, optional) Default: 1024.
- `height` (integer, optional) Default: 1024.
- `prompt` (string, required)
- `guidance_scale` (number, optional) Default: 3.5.
- `num_inference_steps` (integer, optional) - FLUX-schnell is optimised for 1-4 steps. Default: 4.

Example call:

```bash
curl -X POST "https://vonkaiser-imageclassic.chutes.ai/image/flux" \
  -H "Authorization: Bearer $CHUTES_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "seed": 42,
  "width": 1024,
  "height": 1024,
  "prompt": "a serene mountain lake at sunset",
  "guidance_scale": 3.5,
  "num_inference_steps": 4
}' \
  --output output.jpg
```

Playground presets:

- Fast Flux draft
- SDXL illustration

### 3. POST /image/dreamshaper

- Base URL: `https://vonkaiser-imageclassic.chutes.ai`
- Output content type: `image/jpeg`
- Playground note: Choose the checkpoint first, then tune prompt, negative prompt, guidance, and steps for that checkpoint.

Request fields:

- `seed` (integer, optional) Default: null.
- `width` (integer, optional) Default: 1024.
- `height` (integer, optional) Default: 1024.
- `prompt` (string, required)
- `guidance_scale` (number, optional) Default: 7.5.
- `negative_prompt` (string, optional) - What to avoid in the generated image. Default: "".
- `num_inference_steps` (integer, optional) Default: 25.

Example call:

```bash
curl -X POST "https://vonkaiser-imageclassic.chutes.ai/image/dreamshaper" \
  -H "Authorization: Bearer $CHUTES_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "seed": 42,
  "width": 1024,
  "height": 1024,
  "prompt": "a serene mountain lake at sunset",
  "guidance_scale": 7.5,
  "negative_prompt": "",
  "num_inference_steps": 25
}' \
  --output output.jpg
```

Playground presets:

- Fast Flux draft
- SDXL illustration

### 4. POST /image/ilustmix

- Base URL: `https://vonkaiser-imageclassic.chutes.ai`
- Output content type: `image/jpeg`
- Playground note: Choose the checkpoint first, then tune prompt, negative prompt, guidance, and steps for that checkpoint.

Request fields:

- `seed` (integer, optional) Default: null.
- `width` (integer, optional) Default: 1024.
- `height` (integer, optional) Default: 1024.
- `prompt` (string, required)
- `guidance_scale` (number, optional) Default: 7.5.
- `negative_prompt` (string, optional) - What to avoid in the generated image. Default: "".
- `num_inference_steps` (integer, optional) Default: 25.

Example call:

```bash
curl -X POST "https://vonkaiser-imageclassic.chutes.ai/image/ilustmix" \
  -H "Authorization: Bearer $CHUTES_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "seed": 42,
  "width": 1024,
  "height": 1024,
  "prompt": "a serene mountain lake at sunset",
  "guidance_scale": 7.5,
  "negative_prompt": "",
  "num_inference_steps": 25
}' \
  --output output.jpg
```

Playground presets:

- Fast Flux draft
- SDXL illustration

### 5. POST /image/juggernaut

- Base URL: `https://vonkaiser-imageclassic.chutes.ai`
- Output content type: `image/jpeg`
- Playground note: Choose the checkpoint first, then tune prompt, negative prompt, guidance, and steps for that checkpoint.

Request fields:

- `seed` (integer, optional) Default: null.
- `width` (integer, optional) Default: 1024.
- `height` (integer, optional) Default: 1024.
- `prompt` (string, required)
- `guidance_scale` (number, optional) Default: 7.5.
- `negative_prompt` (string, optional) - What to avoid in the generated image. Default: "".
- `num_inference_steps` (integer, optional) Default: 25.

Example call:

```bash
curl -X POST "https://vonkaiser-imageclassic.chutes.ai/image/juggernaut" \
  -H "Authorization: Bearer $CHUTES_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "seed": 42,
  "width": 1024,
  "height": 1024,
  "prompt": "a serene mountain lake at sunset",
  "guidance_scale": 7.5,
  "negative_prompt": "",
  "num_inference_steps": 25
}' \
  --output output.jpg
```

Playground presets:

- Fast Flux draft
- SDXL illustration

## Agent Integration Checklist

- Pick the endpoint path that matches the desired task.
- Set `CHUTES_API_KEY` in the server-side environment only.
- Validate required fields before sending requests.
- For media models, keep file upload, base64 conversion, and output preview/download handling explicit in the app UI.