An example skill that reads a file, checks its frontmatter against defined schemas, and produces a Markdown report. Frontmatter is structured metadata placed at the start of a text file.

Use it as a reference for skills that inspect files, validate metadata, and return a report.

It demonstrates the basic flow and structure expected of a skill in the demo collection.

How crystian/skill-map configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to crystian/skill-map. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/crystian/skill-map/main/.claude/skills/sm-tutorial/fixtures-data/sets/prologue/en/__PROVIDER__/skills/demo-skill/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/crystian/skill-map

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/crystian/skill-map/demo-skill/github.svg)](https://agentmods.dev/skills/crystian/skill-map/demo-skill)

Your own site

<a href="https://agentmods.dev/skills/crystian/skill-map/demo-skill"><img src="https://agentmods.dev/badge/skills/crystian/skill-map/demo-skill/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/crystian/skill-map/demo-skill"><img src="https://agentmods.dev/badge/skills/crystian/skill-map/demo-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 96 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 pass 7 Sept 2026

How audits are shown

Origin original 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 5.1	$0.00028	$0.00096
Opus 5.5	$0.00011	$0.00038
Sonnet 5.5	$0.00006	$0.00019
Haiku 4.5	$0.00003	$0.00010

Measured 2mo ago against content hash cc09e9261f28, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

demo-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 2mo 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.

.claude/skills/sm-tutorial/fixtures-data/sets/prologue/en/__PROVIDER__/skills/demo-skill/SKILL.md · 17 lines

What it actually says

demo-skill

This skill walks a file and returns a report. Will be wired up to the rest of the demo fixture in the next sub-step.

Steps

Read the target.
Validate the frontmatter against the schemas.
Generate the report.

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.

2mo ago First seen · 17 lines · 28 tokens per session scan A cc09e9261f28

Subscribe to this mod's changes

demo-skill is a skill published in the GitHub repository crystian/skill-map (77 stars, last pushed 2mo ago), licensed MIT. It adds 28 tokens to every session and 96 once invoked, about $0.0001 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 2026-08-30.

agents harness manager map markdown skills

demo-skill next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
demo-skillcrystian/skill-map	Skill	77	2mo ago	MIT	A	28	Claude Code
minipostiz-facebook-setupjavimosch/supercli	Skill	57	4d ago	MIT	A	32	Claude Code, Codex
mmx.agent-guidejavimosch/supercli	Skill	57	4d ago	MIT	A	34	Claude Code, Codex
minipostiz-reddit-setupjavimosch/supercli	Skill	57	4d ago	MIT	A	34	Claude Code, Codex
minipostiz-telegram-setupjavimosch/supercli	Skill	57	4d ago	MIT	A	34	Claude Code, Codex
minipostiz-x-setupjavimosch/supercli	Skill	57	4d ago	MIT	A	37	Claude Code, Codex
clawteam.case_study.veg_basket_pocjavimosch/supercli	Skill	57	4d ago	MIT	A	35	Claude Code, Codex

skill-map: Skill for Claude Code