Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/rad-security/claude-code-plugin/inspectnpx skills add rad-security/claude-code-plugin --skill inspectgit clone --depth 1 https://github.com/rad-security/claude-code-pluginWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00063 | $0.01613 |
| Opus 5 | $0.00032 | $0.00807 |
| Sonnet 5 | $0.00013 | $0.00323 |
| Haiku 4.5 | $0.00006 | $0.00161 |
Grade B, and why
inspect scanned grade B with 4 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Reaches for credential filesmediumPrivilege escalation
SSH keys, cloud credentials, git-credentials, .npmrc, /etc/shadow: reading these is how a config file becomes a credential leak.
\.ssh|\.aws|\.gnupg|credentials|\.env|id_rsa|private.key|\.netrc|\.npmrc|auth.*token|password|secret.*key Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
Reads agent configuration directorieslowAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
cat ~/.claude/settings.json 2>/dev/null Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl|wget|nc |ncat|fetch\(|http\.|https\.|XMLHttpRequest|\.post\(|\.put\( Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
\beval\b|Function\(|exec\(|child_process|spawn\(|execSync|\.call\(.*arguments How it starts
The opening of the file, as written. The whole thing — 166 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AgentKeeper Plugin Inspection
You are auditing all installed Claude Code plugins, skills, hooks, and MCP configurations for malicious or suspicious behavior. This is a supply chain security scan for the plugin ecosystem. Everything runs locally — no network calls.
Step 1: Discover Installed Plugins
Read user-level settings
cat ~/.claude/settings.json 2>/dev/null
Read project-level settings
cat .claude/settings.json 2>/dev/null
From both files, extract:
enabledPluginsarray — list of installed plugin paths/identifiers- Any
hooksconfigurations (HTTP hooks or command hooks) - Any
mcpServersconfigurations
Step 2: Walk Each Plugin Directory
For each plugin found in enabledPlugins, resolve its directory path and inspect it.
Read plugin manifest
cat [plugin_path]/.claude-plugin/plugin.json 2>/dev/null || cat [plugin_path]/plugin.json 2>/dev/null
Note the plugin name, version, author, and any declared permissions.
Find all hook scripts
Use Glob to find shell scripts, JS files, and hook configuration files:
[plugin_path]/hooks/**[plugin_path]/scripts/**[plugin_path]/**/*.sh[plugin_path]/**/*.js
Find all skill files
Use Glob to find SKILL.md files:
[plugin_path]/skills/**/SKILL.md
Step 3: Run Security Checks
For each plugin, run these checks:
Check 1: Hook Script Exfiltration (Critical)
Search hook scripts and JS files for network call patterns:
curl|wget|nc |ncat|fetch\(|http\.|https\.|XMLHttpRequest|\.post\(|\.put\(
If found, check whether the URLs point to known/expected domains (like www.agentkeeper.dev, anthropic.com, api.github.com) vs unknown external URLs.
- PASS: No network calls, or only to expected domains
- WARN: Network calls to uncommon but not obviously malicious domains
- FAIL: Network calls to unknown/suspicious domains, especially with session data or file contents
Check 2: Skill Prompt Injection (Critical)
Search SKILL.md files for prompt injection patterns:
ignore all previous|ignore prior|disregard.*instructions|you are now|forget everything|new persona|override.*system|from now on you|pretend you are|act as if|your new role|system prompt override|jailbreak
Use case-insensitive matching.
- PASS: No injection patterns found
- FAIL: Prompt injection patterns detected (quote the suspicious line)
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- yesterday First seen · 166 lines · 63 tokens per session scan B fffe1c0a118b
inspect is a skill published in the GitHub repository rad-security/claude-code-plugin (2 stars, last pushed 26d ago), licensed MIT. It adds 63 tokens to every session and 1,613 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 4 findings (reaches for credential files, reads agent configuration directories, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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