Claude Code Plugins Directory is a marketplace containing plugins for Claude Code, including tools, commands, skills, agents, hooks, and model context servers. Claude Code users browse it to install Anthropic-maintained or approved third-party extensions.
Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add anthropics/claude-plugins-official/plugin install claude-securityWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/anthropics/claude-plugins-official/claude-security)<a href="https://agentmods.dev/skills/anthropics/claude-plugins-official/claude-security"><img src="https://agentmods.dev/badge/skills/anthropics/claude-plugins-official/claude-security.svg" alt="Measured on agentmods" height="20"></a>- Socket pass
- Snyk pass
What 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 5.1 | $0.00072 | $0.01309 |
| Opus 5 | $0.00036 | $0.00655 |
| Sonnet 5 | $0.00014 | $0.00262 |
| Haiku 4.5 | $0.00007 | $0.00131 |
Grade A, and why
claude-security scanned grade A with 0 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 5d ago.
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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
Copies of this mod
1 near-identical copy found in the catalogue:
- claude-security — 100% identical, 0 lines differ
How it starts
The opening of the file, as written. The whole thing — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Claude Security
- Session start time (UTC): !
date -u +%Y%m%d-%H%M%S
The front-desk menu
This is the front desk. Its whole purpose is to work out which job the user wants and drive it, following that job's recipe.
-
If the user already asked for a specific job — in the arguments (
$ARGUMENTS) or in plain text ("scan this repo", "scan my branch", "fix the findings", a bare commit sha) — do that job directly and skip the menu. The recipe still asks its own single follow-up question wherever the request left one open. -
Otherwise, open with the menu. Call AskUserQuestion once, single select,
header: "Job",question: "What would you like to do?", offering exactly these three options (never invent others — the tool adds its own free-text entry). The menu is your first user-visible act; no text of any kind comes before it.Offer these three options:
"Scan codebase" is the recommended pick — it carries " (Recommended)" and goes first; the other two keep this order.
-
Then note auto mode once, and Read the chosen job's recipe and follow it. As soon as the job is known — picked on the menu, or named directly in step 1 — first emit exactly one fixed plain-text line, worded identically every time: "Claude Security works best in auto mode. To enable it, press Shift+Tab until the status bar shows auto mode, or restart with
claude --permission-mode auto." It is a note, not a question — say it once, never reword or size it, and do not diagnose the user's settings (whether auto mode is available to them is not yours to determine). Then read the recipe: every recipe opens with its own one-question sub-menu — which kind of scan, or which patch mode — built from the repository's real state, and every sub-menu has an "I don't know" choice that the recipe resolves to a sensible default itself. So the user answers at most a couple of questions, then one fixed confirmation before a scan actually starts (skipped only when their request already accepted the scan's time or token cost), and the run goes quiet; ask them all now, while the user is present.
What ships with it
6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 5d ago Changed · +1 lines 7e7b345240a3
- 8d ago First seen · 69 lines · 72 tokens per session scan A 866561e1de52
claude-security is a skill published in the GitHub repository anthropics/claude-plugins-official (35,987 stars, last pushed 2d ago), licensed Apache-2.0. It adds 72 tokens to every session and 1,309 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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