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baoyu-cover-image

Generates article cover images with 5 dimensions (type, palette, rendering, text, mood) combining 11 color palettes and 7 rendering styles.

Skill by guanyang

IndexedMIT★ 980
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Install

Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/guanyang-baoyu-cover-image

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Generates article cover images with 5 dimensions (type, palette, rendering, text, mood) combining 11 color palettes and 7 rendering styles. Supports cinematic (2.35:1), widescreen (16:9), and square (1:1) aspects. Use when user asks to "generate cover image", "create article cover", or "make cover".

Use cases: design, writing

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What's inside

Skill name
baoyu-cover-image
Description
Generates article cover images with 5 dimensions (type, palette, rendering, text, mood) combining 11 color palettes and 7 rendering styles. Supports cinematic (2.35:1), widescreen (16:9), and square (1:1) aspects. Use when user asks to "generate cover image", "create article cover", or "make cover".
License
MIT
Instructions
280 lines in SKILL.md · view on GitHub

Before installing

  • Instructions read files in your home folder (~/.ssh, ~/.aws…)

Files (35)

  • SKILL.md
  • auto-selection.md · references/
  • base-prompt.md · references/
  • codex-imagegen.md · references/
  • compatibility.md · references/
  • first-time-setup.md · references/config/
  • preferences-schema.md · references/config/
  • watermark-guide.md · references/config/
  • font.md · references/dimensions/
  • mood.md · references/dimensions/
  • text.md · references/dimensions/
  • cool.md · references/palettes/
  • dark.md · references/palettes/
  • duotone.md · references/palettes/
  • earth.md · references/palettes/
  • elegant.md · references/palettes/
  • macaron.md · references/palettes/
  • mono.md · references/palettes/
  • pastel.md · references/palettes/
  • retro.md · references/palettes/
  • vivid.md · references/palettes/
  • warm.md · references/palettes/
  • chalk.md · references/renderings/
  • digital.md · references/renderings/
  • flat-vector.md · references/renderings/
  • hand-drawn.md · references/renderings/
  • painterly.md · references/renderings/
  • pixel.md · references/renderings/
  • screen-print.md · references/renderings/
  • style-presets.md · references/
  • types.md · references/
  • visual-elements.md · references/
  • confirm-options.md · references/workflow/
  • prompt-template.md · references/workflow/
  • reference-images.md · references/workflow/

SKILL.md (first lines)

# Cover Image Generator

## User Input Tools

When this skill prompts the user, follow this tool-selection rule (priority order):

1. **Prefer built-in user-input tools** exposed by the current agent runtime — e.g., `AskUserQuestion`, `request_user_input`, `clarify`, `ask_user`, or any equivalent.
2. **Fallback**: if no such tool exists, emit a numbered plain-text message and ask the user to reply with the chosen number/answer for each question.
3. **Batching**: if the tool supports multiple questions per call, combine all applicable questions into a single call; if only single-question, ask them one at a time in priority order.

Concrete `AskUserQuestion` references below are examples — substitute the local equivalent in other runtimes.

## Image Generation Tools

Resolve the image backend in this order:

1. **User names a backend** in the current message → use it.
2. **`preferred_image_backend`** in `EXTEND.md` names a backend available now → use it. `ask` means ask every run.
3. **Auto-select** (preference `auto`, unset, or the pinned backend is unavailable), first match wins:
   - **Codex `imagegen`** skill is in your available skills → you are in Codex and MUST use it: `Skill` with `skill: "imagegen"`, passing the prompt file's content plus output path and aspect ratio. It outranks non-native skills such as `baoyu-image-gen`.
   - **Codex via `codex exec` (`codex-imagegen`)**: no native `imagegen`, but the `codex` CLI is on `PATH` with an active `codex login` → `baoyu-image-gen --provider codex-cli` (preferred), or the bundled wrapper if baoyu-image-gen is unavailable. Load [references/codex-imagegen.md](references/codex-imagegen.md) only for this branch.
   - **Cursor `GenerateImage`** → use it (outranks non-native skills). It has no aspect-ratio parameter, so state the aspect ratio / dimensions in the `description` prompt; it saves to a tool-managed location, so copy the file to the expected output path (e.g., `outputs/.../NN-xxx.png`). Reference images go in `reference_image_paths`.
   - **Other runtime-native image tool** (e.g., Hermes `image_generate`) → use it the same way.
   - Exactly one non-native backend installed (e.g., `baoyu-image-gen`) → use it.
   - Several non-native backends → ask the user once, batched with other initial questions.
4. **None available** → tell the user and ask how to proceed.

**⛔ Raster only**: never substitute SVG, HTML/CSS, canvas, or other code-based rendering for a raster image, even for diagram-like content. If no raster backend resolves, go to step 4.

**⛔ No bitmap text patching**: never use ImageMagick, Pillow, Canvas, SVG, HTML/CSS, OCR scripts, or any other overlay to cover, rewrite, erase, stroke, or replace title/subtitle text inside an already generated cover image. Regenerate from a corrected prompt, switch to a lower-text or no-title variant, or ask the user which imperfect candidate to keep.

**Prompt file (hard)**: before invoking any backend, write each image's full, final prompt to its own file under `prompts/` (`NN-{type}-[slug].md`) and pass that file (or its content) to the backend. It is the reproducibility record and lets you switch backends without rewriting prompts.

Change the pinned backend via `## Changing Preferences` below. Tool names above are examples; use the local equivalent in other runtimes.

## Confirmation Policy

Default: **confirm before generation**.

- Explicit skill invocation, a file path, matched keywords/presets, `EXTEND.md` defaults, and any documented auto-selection are recommendation inputs only — none authorizes skipping confirmation.
- Do not start Step 3 or Step 4 until the user confirms the dimensions / aspect / language / backend choices.
- Skip confirmation only when the current request explicitly says so: `--quick`, "直接生成", "不用确认", "跳过确认", "按默认出图", or equivalent. `quick_mode: true` in `EXTEND.md` counts as a standing explicit opt-out — set it only when you want every run to skip Step 2.
- When skipped, state the assumed dimensions / aspect / language / backend in the next user-facing update before generating.

## Options

| Option | Description |
|--------|-------------|
| `--type <name>` | hero, conceptual, typography, metaphor, scene, minimal |
| `--palette <name>` | warm, elegant, cool, dark, earth, vivid, pastel, mono, retro, duotone, macaron |
| `--rendering <name>` | flat-vector, hand-drawn, painterly, digital, pixel, chalk, screen-print |
| `--style <name>` | Preset shorthand (see [Style Presets](references/style-presets.md)) |
| `--text <level>` | none, title-only, title-subtitle, text-rich |
| `--mood <level>` | subtle, balanced, bold |
| `--font <name>` | clean, handwritten, serif, display |
| `--aspect <ratio>` | 16:9 (default), 2.35:1, 4:3, 3:2, 1:1, 3:4 |
| `--lang <code>` | Title language (en, zh, ja, etc.) |
| `--no-title` | Alias for `--text none` |
| `--quick` | Skip confirmation, use auto-selection |
| `--ref <files...>` | Reference images for style/composition guidance |

## Five Dimensions

| Dimension | Default | Details |
|-----------|---------|---------|
| **Type** | auto | [types.md](references/types.md) |
| **Palette** | auto | [palettes/](references/palettes/) |
| **Rendering** | auto | [renderings/](references/renderings/) |
| **Text** | title-only | [dimensions/text.md](references/dimensions/text.md) |
| **Mood** | balanced | [dimensions/mood.md](references/dimensions/mood.md) |
| **Font** | clean | [dimensions/font.md](references/dimensions/font.md) |

Values are listed in Options. Auto-selection: [references/auto-selection.md](references/auto-selection.md). Compatibility matrices: [references/compatibility.md](references/compatibility.md). Icon vocabulary: [references/visual-elements.md](references/visual-elements.md).

## File Structure

Output directory per `default_output_dir` preference:
- `same-dir`: `{article-dir}/`
- `imgs-subdir`: `{article-dir}/imgs/`
- `independent` (default): `cover-image/{topic-slug}/`

```
<output-dir>/
├── source-{slug}.{ext}    # Source files
├── refs/                  # Reference images (if provided)
│   ├── ref-01-{slug}.{ext}
│   └── ref-01-{slug}.md   # Description file
├── prompts/cover.md       # Generation prompt
└── cover.png              # Output image
```

**Slug**: 2-4 words, kebab-case. Conflict: append `-YYYYMMDD-HHMMSS`

## Workflow

```
Cover Image Progress:
- [ ] Step 0: Check preferences (EXTEND.md) ⛔ BLOCKING
- [ ] Step 1: Analyze content + save refs + determine output dir
- [ ] Step 2: Confirm options (6 dimensions) ⚠️ unless --quick
- [ ] Step 3: Create prompt
- [ ] Step 4: Generate image
- [ ] Step 5: Completion report
```

### Step 0: Load Preferences ⛔ BLOCKING

First match wins:

| Priority | Path | Scope |
|----------|------|-------|
| 1 | `.baoyu-skills/baoyu-cover-image/EXTEND.md` | Project |
| 2 | `${XDG_CONFIG_HOME:-$HOME/.config}/baoyu-skills/baoyu-cover-image/EXTEND.md` | XDG |
| 3 | `$HOME/.baoyu-skills/baoyu-cover-image/EXTEND.md` | User home |

Found → load, display summary. Not found → ⛔ run [first-time-setup](references/config/first-time-setup.md) and save, BEFORE any other step or question.

### Step 1: Analyze Content

From guanyang/open-agent-hub, MIT.

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Signals

Stars
980
Forks
165
Open issues
4
Last commit (this folder)
Jun 14, 2026 (4 months ago)
Last release
Jun 24, 2026 (4 months ago)

From GitHub (fetched Oct 24, 2026).

Details

License
MIT
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

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baoyu-cover-image skill. Agent Mart. https://agentmart.dev/skills/guanyang-baoyu-cover-image (last updated 2026-10-24)