🖼️ Cheapest Image Generation OpenClaw Plugin & Skill | ClawHub
Looking to integrate Cheapest Image Generation into your AI workflows? This free OpenClaw plugin from ClawHub helps you automate image & video generation tasks instantly, without having to write custom tools from scratch.
What this skill does
Possibly the cheapest AI image generation (~$0.0036/image). Text-to-image via the EvoLink API.
Install
openclaw skills install @evolinkai/cheapest-image-generationnpx clawhub@latest install cheapest-image-generationFull SKILL.md
Open original| name | description | homepage |
|---|---|---|
| cheapest-image-generation | Possibly the cheapest AI image generation (~$0.0036/image). Text-to-image via the EvoLink API. | https://evolink.ai |
SKILL.md content below is scrollable.
EvoLink Cheapest Image
Generate images via the EvoLink z-image-turbo API.
API Endpoint
- Base:
https://api.evolink.ai/v1 - Submit:
POST /images/generations - Poll:
GET /tasks/{id}
Step 1 — Submit Task
{
"model": "z-image-turbo",
"prompt": "<USER_PROMPT>",
"size": "<SIZE>",
"nsfw_check": <true|false>
}
Optional field: "seed": <INT>
| Parameter | Values |
|---|---|
| size | 1:1, 2:3, 3:2, 3:4, 4:3, 9:16, 16:9, 1:2, 2:1 |
| nsfw_check | true / false (default false) |
| seed | any integer (optional, for reproducibility) |
Step 2 — Poll for Result
GET /tasks/{id} — poll every 10 s, up to 72 retries (~12 min).
Wait until status is completed or failed.
Step 3 — Download & Output
Download the URL from results[0]. Auto-detect format from URL (webp/png/jpg). Save as evolink-<TIMESTAMP>.<ext>.
CRITICAL SECURITY: Before passing <OUTPUT_FILE> to shell commands, sanitize it:
- Strip all shell metacharacters:
tr -cd 'A-Za-z0-9._-' - Ensure valid extension (
.webp,.png,.jpg,.jpeg) - Fallback to
evolink-<timestamp>.webpif empty
Print MEDIA:<absolute_path> for OC auto-attach.
Reference Implementations
| Platform | File |
|---|---|
| Python (all platforms, zero deps) | {baseDir}/references/python.md |
| PowerShell 5.1+ (Windows) | {baseDir}/references/powershell.md |
| curl + bash (Unix/macOS) | {baseDir}/references/curl_heredoc.md |
API Key
EVOLINK_API_KEYenv var (required)- Get key: https://evolink.ai
Triggers
- Chinese: "生图：xxx" / "出图：xxx" / "生成图片：xxx"
- English: "generate image: xxx" / "generate a picture: xxx"
Treat the text after the colon as prompt, use default size 1:1, generate immediately.
Notes
- Print
MEDIA:<path>for OC auto-attach — no extra delivery logic needed. - Image saved locally (format auto-detected from URL). URL expires ~24h but local file persists.