Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/redai-infra/Relaxnpx agentmods add skills/redai-infra/relax/creating-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/redai-infra/relax/creating-skills)<a href="https://agentmods.dev/skills/redai-infra/relax/creating-skills"><img src="https://agentmods.dev/badge/skills/redai-infra/relax/creating-skills/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/redai-infra/relax/creating-skills"><img src="https://agentmods.dev/badge/skills/redai-infra/relax/creating-skills.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to high
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 →
- high Rogue Agent · line 5 Skill modifies its own code, configuration, or behavior at runtime. Self-modification enables an agent to escalate privileges, disable safety constraints, or install persistent backdoors.Fix: Prevent the skill from modifying its own code, SKILL.md, or configuration files. Treat skill files as read-only at runtime.
- medium Excessive Agency · line 67 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
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 | $0.00070 | $0.01661 |
| Opus 5 | $0.00035 | $0.00830 |
| Sonnet 5 | $0.00014 | $0.00332 |
| Haiku 4.5 | $0.00007 | $0.00166 |
Grade A, and why
creating-skills 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 12d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- creating-skills — 86% identical, 117 lines differ
How it starts
The opening of the file, as written. The whole thing — 186 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Creating skills
Guide for creating Claude Code skills following Anthropic's official best practices.
Project skill layout
This project uses a unified skills/ directory at the repo root, symlinked into tool-specific config directories:
<project-root>/
├── skills/ # Canonical location for all skills
│ ├── code-review/
│ ├── creating-skills/
│ ├── dev/
│ └── git-commit/
├── .opencode/
│ └── skills -> ../skills # Symlink for OpenCode
└── .codewiz/
└── skills -> ../skills # Symlink for Codewiz
This way a single set of skill definitions is shared across multiple AI coding tools.
Quick start
# 1. Create skill directory (in the project's unified skills/ dir)
mkdir -p skills/<skill-name>
# 2. Create SKILL.md with frontmatter
cat > skills/<skill-name>/SKILL.md << 'EOF'
---
name: <skill-name>
description: <what it does>. Use when <triggers>. <capabilities>.
---
# <Skill title>
<instructions>
EOF
# 3. Add optional resources as needed
mkdir -p skills/<skill-name>/{scripts,references,assets}
# 4. Ensure symlinks exist (one-time setup per tool)
# ln -s ../skills .opencode/skills
# ln -s ../skills .codewiz/skills
SKILL.md structure
Frontmatter (YAML between --- markers)
| Field | Required | Description |
|---|---|---|
name |
No | Display name. Defaults to directory name. Lowercase, hyphens, max 64 chars. |
description |
Recommended | What + when + capabilities. Max 1024 chars. Determines when Claude activates the skill. |
allowed-tools |
No | Tools Claude can use without asking permission when skill is active. |
argument-hint |
No | Autocomplete hint for arguments. Example: [issue-number] |
disable-model-invocation |
No | true to prevent auto-invocation (manual /name only). |
user-invocable |
No | false to hide from / menu (background knowledge only). |
model |
No | Model override when skill is active. |
context |
No | fork to run in isolated subagent context. |
agent |
No | Subagent type when context: fork. Built-in: Explore, Plan, general-purpose. |
hooks |
No | Lifecycle hooks scoped to this skill. |
What ships with it
2 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.
- 12d ago First seen · 186 lines · 70 tokens per session scan A bfa29bc8c247
creating-skills is a skill published in the GitHub repository redai-infra/Relax (580 stars, last pushed 14d ago), licensed Apache-2.0. It adds 70 tokens to every session and 1,661 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 2026-08-30.
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