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 JamalMohafil/claude-skills --skill content-os-buildergit clone --depth 1 https://github.com/JamalMohafil/claude-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/jamalmohafil/claude-skills/content-os-builder)<a href="https://agentmods.dev/skills/jamalmohafil/claude-skills/content-os-builder"><img src="https://agentmods.dev/badge/skills/jamalmohafil/claude-skills/content-os-builder/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/jamalmohafil/claude-skills/content-os-builder"><img src="https://agentmods.dev/badge/skills/jamalmohafil/claude-skills/content-os-builder.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 | $0.00208 | $0.04909 |
| Opus 5.5 | $0.00083 | $0.01964 |
| Sonnet 5.5 | $0.00042 | $0.00982 |
| Haiku 4.5 | $0.00021 | $0.00491 |
Grade C, and why
content-os-builder scanned grade C with 1 finding 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.
Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
publishing records); `rm -rf tenants/zz-test` when done. Never delete the user's data to clean up. How it starts
The opening of the file, as written. The whole thing — 260 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Content OS Builder
You are an AI coding agent with file-write and shell access. You will build the user a local content operating system: a dashboard that runs idea → approve → produce → publish → learn for one business, or for several businesses kept strictly apart. The user is often an agency running content for clients, or a creator with more than one brand.
This skill is a playbook, not a template. You interview the user, then build from the answers. Every name, colour, voice rule, competitor and key comes from the interview. Nothing in this skill is anyone's real brand, and nothing you build may contain values the user did not give you.
What you are building, in one paragraph
One engine plus N business folders. The engine is engine/app (Next.js App Router, React,
TypeScript strict, Tailwind v4, pnpm), the trusted scripts it runs, and the CLI tools in
engine/tools. Each business is a tenant: tenants/<id>/, holding its manifest, its brand kit,
its ideas and pieces, its memory, its skills and its own account keys. Every API route resolves
exactly one tenant and reads or writes only inside its folder. The filesystem is the database:
there is no DB and no ORM. AI work is done by the user's own coding-agent CLI (normally claude),
spawned headless with cwd set to the tenant folder, with no shell and with inline deny rules
that keep it inside that folder. The agent only writes words and code. The engine does everything
that executes: scaffolding, exporting, rendering and publishing. A single-tenant install is the
same engine with exactly one tenant folder. There is no separate "single-brand" code path.
The golden rule: INTERVIEW FIRST, BUILD SECOND
Write no file until the interview is done and the user has confirmed the summary. The value of the system is that it is theirs. A generic clone is a failed build.
- Ask in the user's language, one group of questions per turn, with a sensible default proposed for each question so they can answer "yes" or adjust.
- They may say "later" to any question, or "use defaults for the rest". Record a "later" item as pending and build the part it gates in its disabled state, with a visible "not set up yet" notice.
- Never ask for secrets in the chat. Tell them which variable goes in which file and let them paste it there. If they paste one anyway, put it in the right file, never echo it back, and tell them to rotate it.
- End with a compact summary and get an explicit yes.
What ships with it
26 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.
- assets/agent-flags.mjs 14 KB runs code
- assets/export-project.mjs 12 KB runs code
- assets/extract-json.mjs 1.5 KB runs code
- assets/ideas-core.mjs 25 KB runs code
- assets/new-tenant.mjs 16 KB runs code
- assets/proposals.mjs 8.3 KB runs code
- assets/proxy.ts 3.7 KB runs code
- assets/radar-verify.mjs 48 KB runs code
- assets/shapes.mjs 19 KB runs code
- assets/sync-tenant.mjs 7.8 KB runs code
- assets/tenant.mjs 13 KB runs code
- README.md 9.9 KB
- references/1-interview.md 20 KB
- references/10-publishing-calendar-and-growth.md 17 KB
- references/11-crm-and-partners.md 8.6 KB
- references/12-brain.md 20 KB
- references/13-routing-maps-and-agents-md.md 12 KB
- references/14-verification.md 8.6 KB
- references/2-architecture-and-tenancy.md 24 KB
- references/3-security-and-agents.md 27 KB
- references/4-brand-kit-and-ideas.md 44 KB
- references/5-dashboard-and-design.md 21 KB
- references/6-production-and-export.md 30 KB
- references/7-media-engines.md 19 KB
- references/8-radar-competitors-and-analytics.md 43 KB
- references/9-assistant-and-memory.md 22 KB
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 Changed · +113 lines · -40 tokens per session scan A → C c11399da46e5
- 1mo ago Changed · +2 lines 3390f854fec0
- 2mo ago Changed · +2 lines 8a184cd18119
- 2mo ago First seen · 143 lines · 248 tokens per session scan A e16385f4dfaa
content-os-builder is a skill published in the GitHub repository JamalMohafil/claude-skills (27 stars, last pushed 12d ago), licensed MIT. It adds 208 tokens to every session and 4,909 once invoked, about $0.0008 per session on Opus 5.5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-04.
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