What is skill-creator?

A skill for creating, editing, and benchmarking Pi skills stored in SKILL.md files. Benchmarking means testing a skill against examples to measure and improve its behavior.

Writing or modifying skills, adding their scripts or reference files, running evaluations, and improving descriptions or triggering rules.

It provides a defined workflow for improving skills and checking whether changes make them perform better.

skill-creator — Skill by Dwsy

Install

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.

agentmods

npx agentmods add skills/dwsy/agent/skill-creator

Any agent

npx skills add Dwsy/agent --skill skill-creator

Clone the repo

git clone --depth 1 https://github.com/Dwsy/agent

Made for: Claude Code, Codex.

Per session 71 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 6,512 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

Origin unknown No closer match found in the catalogue.

Token cost

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	$0.00071	$0.06512
Opus 5	$0.00036	$0.03256
Sonnet 5	$0.00014	$0.01302
Haiku 4.5	$0.00007	$0.00651

Measured 2d ago against content hash 5e8ffa15418f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

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 2d ago.

The scan reads SKILL.md. This mod also ships 10 executable files (eval-viewer/generate_review.py, scripts/__init__.py, scripts/aggregate_benchmark.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/skill-creator/SKILL.md · 463 lines

The source is not reproduced here

No licence file

Read it on GitHub

Files

What ships with it

22 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.

Changes

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.

2d ago First seen · 463 lines · 71 tokens per session scan A 5e8ffa15418f

Subscribe to this mod's changes

skill-creator is a skill published in the GitHub repository Dwsy/agent (22 stars, last pushed 14d ago), with no licence file. It adds 71 tokens to every session and 6,512 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 2026-08-30.

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