CC xianyu-data-grabber
闲鱼数据抓取技能。使用 Playwright + OCR 技术突破反爬虫，抓取闲鱼商品数据（标题、价格、想要人数等），自动上传截图和数据到 Gitee 仓库。支持批量关键词搜索、竞品分析、市场调研。
闲鱼数据抓取技能。使用 Playwright + OCR 技术突破反爬虫，抓取闲鱼商品数据（标题、价格、想要人数等），自动上传截图和数据到 Gitee 仓库。支持批量关键词搜索、竞品分析、市场调研。
As a process C 55/100 · Has gaps — weak spots: result and completion, when it triggers, inputs and preconditions
What is at stake
The skill contains fragments that, in the wrong hands, cost money or data. Below: what the installer risks and what the author should do.
The skill contains commands that delete files, rewrite disks or execute code fetched from the network. The agent may run them without asking if it believes the instructions require it.
Replace destructive commands with safe equivalents that ask for confirmation, scope them to one folder, and stop piping curl into a shell: pin a version and a checksum.
How to improve
- Address the high-severity findings: each costs 18 safety points. If one is a false positive, add the rule id to guard.allow in spec.yaml.
- Say in the description WHEN to use the skill ("use when…", example requests): that is the agent's main cue.
- 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 · 11
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high Dangerous commands
cmd-persistenceinstall.sh:123Persistence mechanism (cron / launchd / scheduled task / autorun registry)(crontab -l 2>/dev/null || true; cat "$CRON_FILE") | crontab -
Medium and low: 10
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medium Dangerous commands
cmd-persistencecron-setup.sh:60Persistence mechanism (cron / launchd / scheduled task / autorun registry) (string literal in code, not executed)echo " crontab /tmp/my-cron.txt"
code literal -
medium Dangerous commands
cmd-pipe-to-shell-known-hostINSTALL.md:8Pipe-to-shell installer from a well-known host (still executes remote code)curl -sL https://raw.githubusercontent.com/your-username/xianyu-data-grabber/main/install.sh | bash
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medium Dangerous commands
cmd-privilegeINSTALL.md:137Privilege escalation / world-writable permissionssudo bash skills/xianyu-data-grabber/install.sh
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medium Dangerous commands
cmd-persistenceINSTALL.md:155Persistence mechanism (cron / launchd / scheduled task / autorun registry) (detector / deny-list definition)crontab -l | grep -v xianyu | crontab -
detector -
low Dangerous commands
cmd-cron-mentioncron-setup.sh:51Mentions editing / listing crontab (string literal in code, not executed)echo " crontab -e"
code literal -
low Dangerous commands
cmd-cron-mentioncron-setup.sh:58Mentions editing / listing crontab (string literal in code, not executed)echo " crontab -l > /tmp/my-cron.txt 2>/dev/null || true"
code literal -
low Dangerous commands
cmd-cron-mentioncron-setup.sh:66Mentions editing / listing crontabcrontab -l 2>/dev/null | grep -c "xianyu" && echo "✅ 已安装闲鱼定时任务" || echo "⚠️ 未安装闲鱼定时任务"
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low Dangerous commands
cmd-cron-mentionINSTALL.md:155Mentions editing / listing crontabcrontab -l | grep -v xianyu | crontab -
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low Dangerous commands
cmd-cron-mentioninstall.sh:123Mentions editing / listing crontab(crontab -l 2>/dev/null || true; cat "$CRON_FILE") | crontab -
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low Dangerous commands
cmd-cron-mentionSKILL.md:329Mentions editing / listing crontab# crontab -e
Files scanned: 19. 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") - note
frontmatter-keyunknown frontmatter key "requires"
Process rating: all ten parameters 55/100
- 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
- 100Tools and files. No external tools needed
- 100Steps. 42 steps
- 100Consistency. Name and required fields are in place
- 100Execution cost. Instruction body is 1349 tokens
- 100Running it twice. No mutating operations
- 100Progress reporting. Reports progress
- low 13 top-level sections: this looks like several domains in one skill
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)
- +3Description length 99: 120–800 characters recommended
- +3Output format is not stated: the model decides each time
- +1No license
- +2Single-language instructions
- +4Structure: 42 headings
- +3Step-by-step instructions: 42 items
- +4Has examples (18 code blocks)
Quality base 70; lint remarks subtract, signals add up to 100. Result: 68.