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master-skill

An example skill used with a master agent in an advanced tutorial.

In plain words
What is it for?
It helps demonstrate reading a target, checking its frontmatter, delegating to the master agent, and producing a Markdown report.
Why use it?
It provides a small example of validating a target and handing work to another agent, but the description gives little information beyond that.

Skill for Claude CodeCodex

59 3d ago A scan 34 tokens original MIT
View the source file crystian/skill-map
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/crystian/skill-map/master-skill
Any agent
npx skills add crystian/skill-map --skill master-skill
Clone the repo
git clone --depth 1 https://github.com/crystian/skill-map

Made for: Claude Code, Codex.

Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 97 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5 $0.00034 $0.00097
Opus 5 $0.00017 $0.00048
Sonnet 5 $0.00007 $0.00019
Haiku 4.5 $0.00003 $0.00010

Measured 2d ago against content hash 57276eaf3f7b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

master-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 2d 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/master/en/__PROVIDER__/skills/master-skill/SKILL.md · 19 lines

What it actually says

master-skill

Hands heavy work over to the master-agent and emits a Markdown report.

Steps

  1. Read the target.
  2. Validate the frontmatter.
  3. Delegate to the agent.
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. 2d ago First seen · 19 lines · 34 tokens per session scan A 57276eaf3f7b

Subscribe to this mod's changes

master-skill is a skill published in the GitHub repository crystian/skill-map (59 stars, last pushed 3d ago), licensed MIT. It adds 34 tokens to every session and 97 once invoked, about $0.0002 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.

agentsharnessmanagermapmarkdownskills
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