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 Pyroxin/opinionated-claude-skills --skill expert-skill-creatorgit clone --depth 1 https://github.com/Pyroxin/opinionated-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/pyroxin/opinionated-claude-skills/expert-skill-creator)<a href="https://agentmods.dev/skills/pyroxin/opinionated-claude-skills/expert-skill-creator"><img src="https://agentmods.dev/badge/skills/pyroxin/opinionated-claude-skills/expert-skill-creator/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/pyroxin/opinionated-claude-skills/expert-skill-creator"><img src="https://agentmods.dev/badge/skills/pyroxin/opinionated-claude-skills/expert-skill-creator.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 | $0.00130 | $0.14672 |
| Opus 5.5 | $0.00052 | $0.05869 |
| Sonnet 5.5 | $0.00026 | $0.02934 |
| Haiku 4.5 | $0.00013 | $0.01467 |
Grade A, and why
expert-skill-creator 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 21d 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.
The source is not reproduced here
Licensed EPL-2.0
The repository is licensed EPL-2.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
What ships with it
11 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.
- references/choosing-worker-models.md 12 KB
- references/citations.md 7.8 KB
- references/composition.md 3.9 KB
- references/creating-skills.md 8.0 KB
- references/prompting-fable.md 13 KB
- references/prompting-haiku.md 14 KB
- references/prompting-opus.md 12 KB
- references/prompting-sonnet.md 12 KB
- references/recent-changes.md 4.7 KB
- references/retrofitting-existing-skills.md 11 KB
- references/validation.md 21 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.
- 21d ago Changed · +6 lines · +57 tokens per session 3eec0d088df7
- 28d ago Changed · -509 lines 6d4b6516509b
- 1mo ago Changed · +42 lines c99282e7ed58
- 1mo ago Changed · +40 lines eb4fe454d5e2
- 2mo ago First seen · 1,142 lines · 73 tokens per session scan A 0717650ce0c5
expert-skill-creator is a skill published in the GitHub repository Pyroxin/opinionated-claude-skills (9 stars, last pushed 22d ago), licensed EPL-2.0. It adds 130 tokens to every session and 14,672 once invoked, about $0.0005 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 skills, from other repositories
top-design
Create award-winning, immersive web experiences at the level of Awwwards-featured agencies. Use when the user mentions "Awwwards quality", "make my site stunning", "scroll animations", "parallax storytelling", "cinematic web design", "portfolio site", or "brand experience". Also trigger when elevating a standard…
add-cloud-flow
Integrates Power Automate cloud flows into a Power Pages site. Lists available flows, suggests relevant ones based on intent, identifies scenarios and web roles, creates metadata files, and generates client-side code to call flows. Handles both new flow registration and adding already-registered flows to additional…
configure-env-variables
Configures environment variables for Power Pages site settings to support ALM across environments. Creates environment variable definitions in Dataverse, guides the user through linking site settings to those variables via the Power Pages Management app, adds the variables to the solution, and generates a…
deploy-site
Deploys an existing Power Pages site to a Power Pages environment using PAC CLI. Routes SPA sites to the existing build and upload-code-site workflow, and PAC-downloaded non-SPA (classic) sites to an isolated upload workflow with explicit data-model and website-identity checks. Handles tooling verification…
create-business
Guided journey from raw idea to a validated, positioned, priced business with a chosen beachhead. Orchestrates ten skills phase by phase - jobs-to-be-done, mom-test, design-sprint, lean-startup, good-strategy-bad-strategy, blue-ocean-strategy, obviously-awesome, hundred-million-offers, monetizing-innovation…
blue-ocean-strategy
Create uncontested market space using value innovation instead of competing head-to-head. Use when the user mentions "blue ocean", "red ocean", "strategy canvas", "ERRC framework", "value innovation", "non-customers", "buyer utility map", "the market is too crowded", "how do we stand out", or "escape the price war".…