Goose Skills is a library of workflows and data APIs that lets coding agents handle growth and go-to-market work such as advertising, social media, content, SEO, lead generation, and customer research. It is intended for teams using Claude Code, Cursor, Codex, and similar agents. The catalogue entries are its reusable skills.
Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/gooseworks-ai/goose-skillsnpx agentmods add skills/gooseworks-ai/goose-skills/content-brief-factoryWrote 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/gooseworks-ai/goose-skills/content-brief-factory)<a href="https://agentmods.dev/skills/gooseworks-ai/goose-skills/content-brief-factory"><img src="https://agentmods.dev/badge/skills/gooseworks-ai/goose-skills/content-brief-factory/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/gooseworks-ai/goose-skills/content-brief-factory"><img src="https://agentmods.dev/badge/skills/gooseworks-ai/goose-skills/content-brief-factory.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- 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 | $0.00076 | $0.03138 |
| Opus 5 | $0.00038 | $0.01569 |
| Sonnet 5 | $0.00015 | $0.00628 |
| Haiku 4.5 | $0.00008 | $0.00314 |
Grade A, and why
content-brief-factory 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 9d 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 — 333 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Content Brief Factory
Most content briefs are garbage. They tell you "mention these keywords 7 times" and call it a strategy. This skill produces briefs that include competitive analysis, unique angles mined from what real customers say, SERP feature targeting, and a differentiated outline — so your writer knows exactly what to create and why it'll rank.
Core principle: A great brief doesn't just say "write about X." It says "here's what's already ranking, here's why it's winning, here's the gap they missed, here's the customer language that proves the gap matters, and here's exactly how to structure a page that beats them."
Batch mode: Process 10-50 keywords in a single run. Each brief takes ~30 seconds in enhanced mode, ~60 seconds in baseline.
When to Use
- "Create content briefs for these keywords"
- "I need briefs for our Q2 content calendar"
- "Write briefs for our pSEO templates"
- "Generate 20 briefs from this keyword list"
- "What should we write about [topic]? Give me a full brief."
Tool Enhancement (Optional)
Briefs are significantly better with real SERP data (what's actually ranking, what SERP features appear) rather than inferred analysis.
Agent Prompt to User
"I can create strong content briefs using competitive research and customer language mining. For the best results — especially accurate SERP analysis and keyword metrics — I'd recommend connecting a SERP data API."
Recommended: SerpAPI (100 free searches/month, $50/month for 5,000)
- Sign up at serpapi.com → get API key
- Set
SERPAPI_KEYenv varAlternatives that also work:
- Serper.dev (2,500 free searches, then $50/month for 50K) → set
SERPER_API_KEY- DataForSEO SERP (pay-per-use, ~$0.01/search) → set
DATAFORSEO_LOGIN+DATAFORSEO_PASSWORD- ValueSERP (free tier available) → set
VALUESERP_API_KEY"Want to use one of these, or should I proceed with baseline mode? Baseline uses web search to analyze competing pages — still produces great briefs, just with less precise SERP feature and volume data."
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.
- 9d ago First seen · 333 lines · 76 tokens per session scan A dfbe1b423e7e
content-brief-factory is a skill published in the GitHub repository gooseworks-ai/goose-skills (1,202 stars, last pushed 11d ago), licensed MIT. It adds 76 tokens to every session and 3,138 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 2026-09-03.
Other skills, from other repositories
Article Repurposer
Takes a long-form article and repurposes it into multiple formats: tweet thread, LinkedIn post, TL;DR, and key quotes.
Blog Outline Generator
Generates a detailed, SEO-optimized blog post outline with H2/H3 structure, key points per section, and a hook.
Social Post Thread Writer
Converts a blog post, idea, or document into an engaging Twitter/X or LinkedIn thread with hooks and CTAs.
FAQ Generator
Generates a comprehensive FAQ section for any product, API, or documentation page.
Newsletter Summary Writer
Condenses long articles, threads, or documents into concise, engaging newsletter-ready summaries.
Technical Blog Post Writer
Writes engaging, accurate technical blog posts targeted at developer audiences.