claude-skills is a large collection of reusable skills, commands, plugins, and supporting resources for coding agents across engineering, business, research, compliance, and productivity work. It is used by people who want agents such as Claude Code, Codex, Gemini CLI, or Cursor to follow specialized workflows. The catalogue contains selected skills and settings from the collection.
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 alirezarezvani/claude-skills/plugin install c-level-agentsWrote 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/alirezarezvani/claude-skills/brief)<a href="https://agentmods.dev/skills/alirezarezvani/claude-skills/brief"><img src="https://agentmods.dev/badge/skills/alirezarezvani/claude-skills/brief/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/alirezarezvani/claude-skills/brief"><img src="https://agentmods.dev/badge/skills/alirezarezvani/claude-skills/brief.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Agent Snooping · line 1 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
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 | $0.00068 | $0.01094 |
| Opus 5.5 | $0.00027 | $0.00438 |
| Sonnet 5.5 | $0.00014 | $0.00219 |
| Haiku 4.5 | $0.00007 | $0.00109 |
Grade A, and why
brief 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 2d 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.
How it starts
The opening of the file, as written. The whole thing — 119 lines — stays where its author put it; the contents beside it link to each section on GitHub.
/c-level-agents:brief — One-Page Strategy Brief
Command: /c-level-agents:brief <topic> or /c-level-agents:brief <office-hours-output>
Turns intake (raw question or office-hours output) into a one-page strategy brief that the boardroom can deliberate on. This is Step 1 of the strategic sprint pipeline.
Pipeline Position
/c-level-agents:office-hours → /c-level-agents:brief → /c-level-agents:boardroom → /c-level-agents:decide → /c-level-agents:execute → /c-level-agents:post-mortem
↑ you are here
Inputs
- A topic string, or
- An office-hours brief (preferred — more rigor)
~/.claude/company-context.md(loaded automatically)
Output
A single Markdown file under ~/.claude/briefs/YYYY-MM-DD-<slug>.md with this structure:
# Strategy Brief: <topic>
**Date:** YYYY-MM-DD
**Author:** cs-chief-of-staff
**Status:** DRAFT | UNDER REVIEW | APPROVED | RETIRED
## Context
[1-2 paragraphs: where the company sits today on this topic — pulled from company-context.md]
## Question
[The one sentence question the boardroom must answer]
## Options
1. **Option A:** <name> — <one-sentence summary>
2. **Option B:** <name> — <one-sentence summary>
3. **Option C:** <name> — <one-sentence summary>
(Minimum 2 options. "Do nothing" is always an option.)
## Assumptions
- <assumption 1 — explicit>
- <assumption 2>
- <assumption 3>
## Constraints
- Time: <by when must this decide>
- Money: <budget envelope>
- People: <who can / can't be reallocated>
- Reversibility: <one-way door | two-way door>
## Affected Roles
[Which cs-* advisors should weigh in. Used to route to /c-level-agents:boardroom panel composition.]
- [ ] cs-ceo-advisor
- [ ] cs-cfo-advisor
- [ ] cs-cto-advisor
- [ ] cs-cmo-advisor
- [ ] cs-cro-advisor
- [ ] cs-cpo-advisor
- [ ] cs-coo-advisor
- [ ] cs-chro-advisor
- [ ] cs-ciso-advisor
- [ ] cs-general-counsel-advisor
- [ ] cs-cdo-advisor
- [ ] cs-caio-advisor
- [ ] cs-cco-advisor
- [ ] cs-vpe-advisor
- [ ] cs-chief-of-staff
## Success Criteria
[Measurable outcomes that define success — set BEFORE the decision]
- <metric 1, threshold, timeframe>
- <metric 2, threshold, timeframe>
## Kill Criteria
[What signal would tell you in 90 days that this was the wrong call]
- <metric, threshold, action if missed>
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.
- 2d ago Changed · +118 lines · +68 tokens per session a4b807806519
- 1mo ago First seen · 1 lines · 0 tokens per session scan A 3061f996df53
brief is a skill published in the GitHub repository alirezarezvani/claude-skills (28,721 stars, last pushed 2d ago), licensed MIT. It adds 68 tokens to every session and 1,094 once invoked, about $0.0003 per session on Opus 5.5. 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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