AD mac-wallpaper-changer
自动更换 Mac 壁纸、壁纸智能推荐与偏好学习。凡涉及壁纸相关操作，都应优先使用此技能：换壁纸、更换桌面背景、 Mac wallpaper、自动换壁纸（cron/定时任务）、按关键词搜索壁纸（如"上海夜景"、"mountain sunset"）、 壁纸评分与喜好统计、壁纸推荐、位置配置。支持 Bing 每日精选 / Unsplash / Picsum 多图源， 支持本地图片、URL 直接设置，兼容 macOS Tahoe（26+）。
As a process D 43/100 · Unfinished process — weak spots: result and completion, when it triggers, inputs and preconditions
How to improve
- Say in the description WHEN to use the skill ("use when…", example requests): that is the agent's main cue.
For the model run — optional
- Your own cases (evals/evals.json, 4–6 real requests with expected answers): the full check would then run those instead of a model-drafted suite.
- A spec.yaml with trigger phrases and assertions — a behaviour contract for CI; `skilltest init` writes a template.
Guard findings · 0
✓ No critical or high findings
Files scanned: 10. Evidence is masked. Grey chips explain why severity was lowered.
Against the Agent Skills spec
- warning
description-no-whendescription does not say WHEN to use the skill (no "use when")
Process rating: all ten parameters 43/100
- 0Result and completion. Does not say what the result is
- 0Inputs and preconditions. Does not say what the process needs to start
- 0Failures and branches. Linear process with no failure handling
- 20When it triggers. No condition that starts the skill
- 40Consistency. Frontmatter name (mac-wallpaper-changer) differs from the folder (mwc)
- 60Tools and files. Uses tools (python) that frontmatter does not declare
- 100Steps. 5 steps
- 100Execution cost. Instruction body is 528 tokens
- 100Running it twice. No mutating operations
- 100Progress reporting. Reports progress
Everything here is measured from the skill text rather than judged by a model, so the numbers are checkable. A parameter weighs more when it is a more common reason for the process to stall.
Quality signals
- +5Description has no quoted example phrases that should trigger the skill
- +4Description does not say when NOT to use the skill (false activations)
- +3Output format is not stated: the model decides each time
- +1No license
- +2Single-language instructions
- +3Description length 218: enough signal without eating the budget
- +4Structure: 9 headings
- +3Step-by-step instructions: 5 items
- +4Has examples (2 code blocks)
- +4Reference files are cited in the instructions (2 of 2)
- +3All 5 scripts are documented
Quality base 70; lint remarks subtract, signals add up to 100. Result: 79.
External checks
ClawHub: clean
This is a coherent macOS wallpaper tool, but it can download remote images, save local history, and change your desktop background.
LLM: benign (high) · VirusTotal: · 29 May 2026