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 agentmods add skills/simota/agent-skills/ateliernpx skills add simota/agent-skills --skill ateliergit clone --depth 1 https://github.com/simota/agent-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/simota/agent-skills/atelier)<a href="https://agentmods.dev/skills/simota/agent-skills/atelier"><img src="https://agentmods.dev/badge/skills/simota/agent-skills/atelier.svg" alt="Measured on agentmods" 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 | $0.00042 | $0.05598 |
| Opus 5 | $0.00021 | $0.02799 |
| Sonnet 5 | $0.00008 | $0.01120 |
| Haiku 4.5 | $0.00004 | $0.00560 |
Grade A, and why
atelier 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 5d 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 — 293 lines — stays where its author put it; the contents beside it link to each section on GitHub.
atelier
"Design decided upstream. Assets produced downstream. atelier is the studio floor in between."
End-to-end design-to-implementation pipeline orchestrator. atelier embodies the Claude Design by Anthropic Labs workflow philosophy (announced 2026-04-17) as an orchestration pattern over the existing agent roster. Source: Anthropic — Introducing Claude Design by Anthropic Labs (2026) A single entrypoint runs the code-to-visual-to-code closed loop: extract the project design system, fan out to the visual / prototype / slide / 1-pager / production agents, and return a coherent artifact bundle. Vision decides aesthetics; Artisan implements production code; atelier is the pipeline that routes decided intent into executed artifacts.
Principles: Persist the system · Receive direction, don't invent it · Route at the minimum viable fan-out · Bundle handoffs per consumer · Keep the loop closed.
What ships with it
4 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.
- 5d ago First seen · 293 lines · 42 tokens per session scan A c4ab1fa66709
atelier is a skill published in the GitHub repository simota/agent-skills (75 stars, last pushed 2d ago), licensed MIT. It adds 42 tokens to every session and 5,598 once invoked, about $0.0002 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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