Borrowing it
Nothing to install: this file belongs to oyusypenko/creo. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/oyusypenko/creo/main/CLAUDE.mdgit clone --depth 1 https://github.com/oyusypenko/creoWrote 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/instructions/oyusypenko/creo/claude-md)<a href="https://agentmods.dev/instructions/oyusypenko/creo/claude-md"><img src="https://agentmods.dev/badge/instructions/oyusypenko/creo/claude-md/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/instructions/oyusypenko/creo/claude-md"><img src="https://agentmods.dev/badge/instructions/oyusypenko/creo/claude-md.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 | $0.01056 | $0.01056 |
| Opus 5.5 | $0.00422 | $0.00422 |
| Sonnet 5.5 | $0.00211 | $0.00211 |
| Haiku 4.5 | $0.00106 | $0.00106 |
Grade A, and why
creo CLAUDE.md 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 1mo 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 — 93 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Creo -- Design & Development Toolkit
Project Overview
Creo is a Claude Code skill providing 14 sub-skills, 14 parallel subagents, and 4 optional extensions covering design review, UX analysis, marketing content, SEO, DevOps, CI/CD, testing, performance optimization, and marketing site orchestration.
Architecture
creo/
CLAUDE.md # Project instructions (this file)
.claude-plugin/plugin.json # Plugin manifest (v1.0.0)
creo/ # Main orchestrator skill
SKILL.md # Entry point, routing table, core rules
references/ # On-demand knowledge files (12 files)
skills/ # 14 specialized sub-skills
creo-design-review/SKILL.md # UI/UX review (responsive, WCAG, heuristics)
creo-design-implement/SKILL.md # Execute design fixes from reports
creo-ux-internal/SKILL.md # Analyze own app UX flows
creo-ux-competitor/SKILL.md # Analyze competitor UX
creo-content/SKILL.md # Marketing content (JTBD, pain points)
creo-image-prompt/SKILL.md # Image prompt generation
creo-seo/SKILL.md # SEO audit & optimization
creo-devops/SKILL.md # Infrastructure (GitHub/Cloudflare/Railway/Stripe)
creo-pipeline/SKILL.md # CI/CD pipeline specialist
creo-test/SKILL.md # Test orchestration (unit + E2E)
creo-marketing-site/SKILL.md # Marketing site creation (7-stage)
creo-ai-generation/SKILL.md # AI generation pipelines
creo-perf/SKILL.md # Performance optimization with measured proof
agents/ # 14 parallel subagents
creo-design-review.md
creo-design-implement.md
creo-ux-internal.md
creo-ux-competitor.md
creo-content.md
creo-seo.md
creo-unit-test.md
creo-e2e-test.md
creo-github-cli.md
creo-cloudflare-cli.md
creo-railway-cli.md
creo-stripe-cli.md
creo-perf-audit.md
extensions/ # Optional extensions
image-generation/ # DALL-E 3 & ComfyUI (Node.js)
i18n-translator/ # Batch translation via LM Studio (Python)
gsc-analyzer/ # Google Search Console (Python)
perf-harness/ # Deterministic benchmark harness (bash/python/node)
docs/ # Extended documentation
ARCHITECTURE.md
COMMANDS.md
INSTALLATION.md
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.
- 1mo ago Changed · +4 lines · +67 tokens per session 6acc8c38cf38
- 1mo ago First seen · 89 lines · 989 tokens per session scan A df48f430bb6b
creo CLAUDE.md is an instructions file published in the GitHub repository oyusypenko/creo (4 stars, last pushed 1mo ago), licensed MIT. It adds 1,056 tokens to every session, about $0.0042 per session on Opus 5.5. 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.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.