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 Agent-Threat-Rule/agent-threat-rules --skill real-hyf0-creategit clone --depth 1 https://github.com/Agent-Threat-Rule/agent-threat-rulesWrote 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/agent-threat-rule/agent-threat-rules/real-hyf0-create)<a href="https://agentmods.dev/skills/agent-threat-rule/agent-threat-rules/real-hyf0-create"><img src="https://agentmods.dev/badge/skills/agent-threat-rule/agent-threat-rules/real-hyf0-create/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/agent-threat-rule/agent-threat-rules/real-hyf0-create"><img src="https://agentmods.dev/badge/skills/agent-threat-rule/agent-threat-rules/real-hyf0-create.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 | $0.00061 | $0.01294 |
| Opus 5 | $0.00030 | $0.00647 |
| Sonnet 5 | $0.00012 | $0.00259 |
| Haiku 4.5 | $0.00006 | $0.00129 |
Grade A, and why
create-skill 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- create-skill — 100% identical, 0 lines differ
How it starts
The opening of the file, as written. The whole thing — 125 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Workflow
Follow these 9 steps in order. Copy this checklist into your response and check off each step as you complete it:
Task Progress:
- [ ] Step 1: Understand the skill with concrete examples
- [ ] Step 2: Choose skill name
- [ ] Step 3: Write description
- [ ] Step 4: Write frontmatter
- [ ] Step 5: Write SKILL.md body
- [ ] Step 6: Decide on progressive disclosure
- [ ] Step 7: Create bundled resources
- [ ] Step 8: Validate
- [ ] Step 9: Iterate
Step 1: Understand the Skill with Concrete Examples
Work through 2-3 concrete examples of how the skill will be used. Ask the user:
- What does the skill do? Can you show me an example of how you'd use it?
- What would a user say that should trigger this skill?
- Does it need
allowed-tools(does it run shell commands, use MCP tools)? - Should this be a background skill? (always-loaded context, not user-invocable — see frontmatter-spec for
user-invocable: false)
For each example, walk through how it would be executed from scratch. This reveals what knowledge, scripts, or assets are needed.
Classify the skill category:
- Document/asset creation — generates files, reports, configs
- Workflow automation — multi-step processes, scaffolding, setup
- MCP enhancement — extends or coordinates MCP server capabilities
Step 2: Choose Skill Name
Rules:
- Gerund form for processes (
creating-components), noun form for tools (code) - Kebab-case, max 64 characters, must match folder name
Step 3: Write the Description
This is the highest-impact field — a poor description causes the skill to never be invoked.
Follow the "What + When" formula and all rules in: -> See description-writing
Step 4: Write the Frontmatter
Use the exact YAML schema and constraints in: -> See frontmatter-spec
Step 5: Write the SKILL.md Body
Rules:
- Under 500 lines (~5,000 words max)
- Only include knowledge the agent does not already have — do not teach general programming, standard libraries, or well-known tools
- No time-sensitive information (versions that expire, URLs that rot)
- Consistent terminology throughout — pick one term for each concept and stick with it
- Imperative voice
- For any workflow with 3+ steps, include a copyable task list checklist (
- [ ]items) that the agent copies and checks off as it progresses — this prevents step-skipping and makes progress observable - Match instruction specificity to task fragility — see "Degrees of Freedom" in skill-patterns
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.
- 7d ago First seen · 125 lines · 61 tokens per session scan A c2188e8a0a66
create-skill is a skill published in the GitHub repository Agent-Threat-Rule/agent-threat-rules (389 stars, last pushed yesterday), licensed MIT. It adds 61 tokens to every session and 1,294 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 2026-09-05.
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