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 skills add bestagentkits/agency-skills --skill briefgit clone --depth 1 https://github.com/bestagentkits/agency-skillsWrote 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/bestagentkits/agency-skills/brief)<a href="https://agentmods.dev/skills/bestagentkits/agency-skills/brief"><img src="https://agentmods.dev/badge/skills/bestagentkits/agency-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/bestagentkits/agency-skills/brief"><img src="https://agentmods.dev/badge/skills/bestagentkits/agency-skills/brief.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00066 | $0.01028 |
| Opus 5 | $0.00033 | $0.00514 |
| Sonnet 5 | $0.00013 | $0.00206 |
| Haiku 4.5 | $0.00007 | $0.00103 |
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 11d 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.
/cs:brief — One-Page Strategy Brief
Command: /cs:brief <topic> or /cs: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
/cs:office-hours → /cs:brief → /cs:boardroom → /cs:decide → /cs:execute → /cs: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 /cs: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 ships with it
1 file 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.
- 11d ago First seen · 119 lines · 66 tokens per session scan A 971097d2cd3b
brief is a skill published in the GitHub repository bestagentkits/agency-skills (11 stars, last pushed 2mo ago), licensed MIT. It adds 66 tokens to every session and 1,028 once invoked, about $0.0003 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 2026-08-31.
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