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 ognjengt/founder-skills --skill brand-copywritergit clone --depth 1 https://github.com/ognjengt/founder-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/ognjengt/founder-skills/brand-copywriter)<a href="https://agentmods.dev/skills/ognjengt/founder-skills/brand-copywriter"><img src="https://agentmods.dev/badge/skills/ognjengt/founder-skills/brand-copywriter/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/ognjengt/founder-skills/brand-copywriter"><img src="https://agentmods.dev/badge/skills/ognjengt/founder-skills/brand-copywriter.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector 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 | $0.00052 | $0.02870 |
| Opus 5 | $0.00026 | $0.01435 |
| Sonnet 5 | $0.00010 | $0.00574 |
| Haiku 4.5 | $0.00005 | $0.00287 |
Grade A, and why
brand-copywriter 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 12d 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:
- brand-copywriter — 100% identical, 1 lines differ
How it starts
The opening of the file, as written. The whole thing — 299 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Brand Copywriter
Purpose
Generate professional marketing copy in two versions: one using the optimal framework for the platform/use case, and one using an AI-selected alternative framework for comparison.
Execution Logic
Check $ARGUMENTS first to determine execution mode:
If $ARGUMENTS is empty or not provided:
Respond with: "brand-copywriter loaded, proceed with what you need copy for (e.g., Facebook ad, landing page, TikTok video, LinkedIn post, email sequence, etc.)"
Then wait for the user to provide their requirements in the next message.
If $ARGUMENTS contains content:
Proceed immediately to Task Execution (skip the "loaded" message).
Task Execution
When user requirements are available (either from initial $ARGUMENTS or follow-up message):
1. MANDATORY: Read Reference Files FIRST
BLOCKING REQUIREMENT — DO NOT SKIP THIS STEP
Before doing ANYTHING else, you MUST use the Read tool to read BOTH reference files:
Read: ./references/copy_frameworks.md
Read: ./references/writing_styles.md
What you will find:
- copy_frameworks.md: 14 proven copywriting frameworks with detailed structures, selection matrix, and quick reference tables
- writing_styles.md: Voice and tone rules built from Ogilvy, Schwartz, Hopkins, Halbert, Sugarman, Caples, and Collier. Contains the Banned Phrases list, AI tell patterns to avoid, and how human copy actually sounds.
DO NOT PROCEED to Step 2 until you have read both files and have the frameworks AND voice rules loaded in context.
2. Check for Business Context
Check if FOUNDER_CONTEXT.md exists in the project root.
- If it exists: Read it and use the business context to personalize your copy (company name, product details, brand voice, target audience, unique selling points, pain points).
- If it doesn't exist: Proceed using defaults from "Defaults & Assumptions" and ask clarifying questions if critical information is missing.
3. Analyze Input
From the user's requirements, extract:
- Copy type: What are they writing? (Facebook ad, landing page, TikTok script, etc.)
- Product/service: What are they selling?
- Target audience: Who is this for?
- Key benefit/transformation: What outcome does the customer get?
- Tone: Professional, casual, bold, friendly, etc.
- Length constraints: Character limits, word count, duration (for video)
What ships with it
3 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.
- 12d ago First seen · 299 lines · 52 tokens per session scan A 984633f88ec0
brand-copywriter is a skill published in the GitHub repository ognjengt/founder-skills (302 stars, last pushed 3mo ago), licensed MIT. It adds 52 tokens to every session and 2,870 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 2026-08-30.
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