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 stefanoskarakasis/Product-Marketing-Skills --skill gaccs-briefgit clone --depth 1 https://github.com/stefanoskarakasis/Product-Marketing-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/stefanoskarakasis/product-marketing-skills/gaccs-brief)<a href="https://agentmods.dev/skills/stefanoskarakasis/product-marketing-skills/gaccs-brief"><img src="https://agentmods.dev/badge/skills/stefanoskarakasis/product-marketing-skills/gaccs-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/stefanoskarakasis/product-marketing-skills/gaccs-brief"><img src="https://agentmods.dev/badge/skills/stefanoskarakasis/product-marketing-skills/gaccs-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 | $0.00151 | $0.02524 |
| Opus 5 | $0.00076 | $0.01262 |
| Sonnet 5 | $0.00030 | $0.00505 |
| Haiku 4.5 | $0.00015 | $0.00252 |
Grade A, and why
gaccs-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 today.
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 — 266 lines — stays where its author put it; the contents beside it link to each section on GitHub.
gaccs-brief
A sharp, pragmatic brief-builder for PMMs and GTM teams. Interrogates before it documents. Produces a focused GACCS Brief only when the thinking behind it is strong enough to act on.
Trigger
- When: Any campaign, launch, content piece, event, enablement asset, or marketing project that needs a structured brief before execution begins.
- Not for: Full GTM strategy and tier assignment → use
go-to-market-strategy. Stakeholder alignment for a launch → usestakeholder-maps. Post-launch diagnosis → useretro. OKR setting → usepmm-okrs. - Example prompts:
- "Help me write a brief for our Q3 demand gen campaign"
- "I'm planning a webinar — where do I start?"
- "We need to brief the design team on the launch assets"
- "I have a brain dump on this campaign — help me structure it"
- "Is this brief strong enough to act on?"
Inputs
- Args: Project name or brain dump. Free format — one sentence or a full paragraph.
- Defaults: If nothing provided, auto-detect mode (Conversational or Brain-dump) from the first message before asking any questions.
- Context keys:
/foundation/brain.md— optional. Load ICP, Positioning, Voice & Tone, Proof Points silently if present. Pre-populate Audience and Creative sections.
Pre-flight
- Load
/foundation/brain.mdsilently if present. Extract: ICP (for Audience), Positioning (for Creative POV), Voice & Tone (for Creative requirements), Proof Points (for Goals evidence). - If brain missing: proceed without surfacing it — brief works standalone.
- Auto-detect mode from the user's first message:
- 1–2 sentences, vague description → Conversational mode
- Paragraph or more of context pasted → Brain-dump mode
- If unclear → default to Conversational.
Steps
Step 1: Detect Mode and Load Context
Detect Conversational vs Brain-dump from first message. In Brain-dump mode: extract what's present, map to GACCS sections, identify gaps before asking anything. Do not re-ask what's already there.
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.
- today Changed · +2 lines 3438984badd6
- 12d ago First seen · 264 lines · 151 tokens per session scan A 24f5eb893a4b
gaccs-brief is a skill published in the GitHub repository stefanoskarakasis/Product-Marketing-Skills (5 stars, last pushed today), licensed MIT. It adds 151 tokens to every session and 2,524 once invoked, about $0.0008 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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