skill-creator

skill-creator is a skill for Claude Code, Codex from digoal/blog. It costs 64 tokens per session (7,339 once invoked), scanned A, original, GPL-2.0.

A toolkit for creating, editing, improving, and evaluating coding-agent skills. It helps define reusable instructions that guide an agent's behaviour.

In plain words
What is it for?
Use it to build a skill from scratch, refine its instructions, run evaluations, compare performance, and improve triggering accuracy.
Why use it?
It removes the guesswork from maintaining skills and checking whether they trigger and perform as intended.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it to build a skill from scratch, refine its instructions, run evaluations, compare performance, and improve triggering accuracy.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/digoal/blog/skill-creator
View source ↗ digoal/blog
About the project

digoal/blog is a large collection of Chinese-language articles, courses, videos, and practical learning materials about databases, especially PostgreSQL and related systems, along with topics such as AI, open source, business, and finance. It is for database administrators, developers, architects, and others learning database technologies and their applications.

digoal/blog · 8,569 stars · on GitHub

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.

Any agent
npx skills add digoal/blog --skill skill-creator
Clone the repo
git clone --depth 1 https://github.com/digoal/blog

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for skill-creator

README.md
[![agentmods](https://agentmods.dev/badge/skills/digoal/blog/skill-creator/github.svg)](https://agentmods.dev/skills/digoal/blog/skill-creator)
Your own site
<a href="https://agentmods.dev/skills/digoal/blog/skill-creator"><img src="https://agentmods.dev/badge/skills/digoal/blog/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.

agentmods 80×15 button for skill-creator

Your own site · 80×15
<a href="https://agentmods.dev/skills/digoal/blog/skill-creator"><img src="https://agentmods.dev/badge/skills/digoal/blog/skill-creator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 7,339 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Rogue Agent · line 228
    Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.
    Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
How audits are shown
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00064 $0.07339
Opus 5 $0.00032 $0.03669
Sonnet 5 $0.00013 $0.01468
Haiku 4.5 $0.00006 $0.00734

Measured 7d ago against content hash 9c3323d73cb7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, 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 7d 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.

skills/skills_for_claude_web/skill-creator/SKILL.md · 460 lines

The source is not reproduced here

Licensed GPL-2.0

The repository is licensed GPL-2.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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.

  1. 7d ago First seen · 460 lines · 64 tokens per session scan A 9c3323d73cb7

Subscribe to this mod's changes

skill-creator is a skill published in the GitHub repository digoal/blog (8,569 stars, last pushed yesterday), licensed GPL-2.0. It adds 64 tokens to every session and 7,339 once invoked, about $0.0003 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 2026-09-03.