design-explore/image-maker: use free Ming Image 0.1 Design via /api/v1/images

- Ming (inclusionai/ming-image-0.1-design) is free and built for graphic-design
  output with legible in-image text; now the preferred mockup model.
- Ming is a true image-generation model: the chat/completions endpoint rejects
  it (HTTP 404). Documented the /api/v1/images call + base64 decode recipe.
- Kept paid chat-image models as a documented fallback.
- Fixed the API key location: OPENROUTER_API_KEY is in /home/sam/.secrets,
  NOT ~/.config/environment.d/10-secrets.conf as the old text claimed.
This commit is contained in:
2026-09-27 18:36:21 +10:00
parent fbe6e3c371
commit d1bc25c2e0
2 changed files with 50 additions and 6 deletions

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@@ -1,6 +1,6 @@
---
provider: omniroute
description: Image generation via OpenRouter chat completions API
description: Image generation via OpenRouter images + chat completions APIs
model: openrouter/openai/gpt-5-image-mini
memory: project
thinking: off
@@ -18,10 +18,42 @@ You are an image generation specialist. You have ONE job: call the remote API an
- If no API key is available, say: "No OPENROUTER_API_KEY found." Then STOP.
## Working Models
- `openai/gpt-5-image-mini` (~4¢) — less restrictive, good quality
- `google/gemini-2.5-flash-image` (~4¢) — Google content filters apply
## API Call Format
**Prefer `inclusionai/ming-image-0.1-design` — it is FREE.**
| Model | Endpoint | Cost | Notes |
|---|---|---|---|
| `inclusionai/ming-image-0.1-design` | `/api/v1/images` | **free** | inclusionAI text-to-image for graphic design; excellent legible text rendering inside the image. Best default for UI mockups. |
| `openai/gpt-5-image-mini` | `/api/v1/chat/completions` | ~4¢ | less restrictive, good quality |
| `google/gemini-2.5-flash-image` | `/api/v1/chat/completions` | ~4¢ | Google content filters apply |
⚠️ Endpoint matters. Most image models are chat models that return `choices[0].message.images[0].image_url.url`. **Ming is not** — it is a true image-generation model and the chat endpoint rejects it with HTTP 404 (`"... is an image generation model and cannot be used with the chat/completions endpoint"`). Ming must use `/api/v1/images`.
## API Call Format — Ming (preferred, free)
```bash
curl -s https://openrouter.ai/api/v1/images \
-H "Authorization: Bearer $OPENROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "inclusionai/ming-image-0.1-design",
"prompt": "<detailed description>"
}' -o /tmp/ming.json
```
Returns `data[0].b64_json` (base64 PNG) and `data[0].media_type`. Decode to a file:
```bash
python3 -c "
import json,base64
r=json.load(open('/tmp/ming.json'))['data'][0]
open('/tmp/design-explore-1.png','wb').write(base64.b64decode(r['b64_json']))
print('saved /tmp/design-explore-1.png')
"
```
## API Call Format — paid chat-image models (fallback)
```bash
curl -s https://openrouter.ai/api/v1/chat/completions \
-H "Authorization: Bearer $OPENROUTER_API_KEY" \
@@ -35,6 +67,14 @@ curl -s https://openrouter.ai/api/v1/chat/completions \
The image comes back as base64 in `choices[0].message.images[0].image_url.url`. Save it to a file with proper extension.
## API Key
Get OPENROUTER_API_KEY from `~/.config/environment.d/10-secrets.conf` (source it first).
`OPENROUTER_API_KEY` lives in **`/home/sam/.secrets`** (a plain `KEY=value` file). Load it with:
```bash
set -a; . /home/sam/.secrets; set +a
echo "${OPENROUTER_API_KEY:+key loaded}"
```
It is NOT in `~/.config/environment.d/10-secrets.conf` — older versions of this file claimed that and the call failed.
Write detailed, specific prompts. Save images to the user's current working directory or a specified path. Tell the user where you saved the file.

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@@ -7,6 +7,8 @@ description: Generate visual UI design mockups as images for exploration and ide
Generate visual UI mockups. Asks the user what to design, pulls design tokens or style references, and calls `image-maker` to produce high-fidelity mockup images.
> **Image model:** use `inclusionai/ming-image-0.1-design` — it is **free**, and it is specifically built for graphic-design output with legible text rendering inside the image, which is exactly what UI mockups need. It is a true image-generation model and must be called on OpenRouter's `/api/v1/images` endpoint (NOT `/chat/completions`). See the `image-maker` subagent for the exact call.
---
## 🎨 Visual System & Image Prompting Rules
@@ -32,11 +34,13 @@ curl -sL <DESIGN_MD_URL> -o /tmp/design-tokens.md
### Step 3: Call `image-maker`
Instruct it to use the free Ming model via the images endpoint.
```bash
Agent(
subagent_type: "image-maker",
description: "Generate design mockup images",
prompt: "High-fidelity UI mockup for {what}. Aesthetic: {vibe/tokens}. Clean browser frame, non-generic layout, bold typography, rich contrast, professional SaaS/web app finish.",
prompt: "Use model inclusionai/ming-image-0.1-design via POST https://openrouter.ai/api/v1/images (free). Generate a high-fidelity UI mockup for {what}. Aesthetic: {vibe/tokens}. Clean browser frame, non-generic layout, bold typography, rich contrast, professional SaaS/web app finish. Save as /tmp/design-explore-<N>.png and report the path.",
max_turns: 3
)
```