magpie-list-skills

A generated index of all coding-agent skills in a repository, grouped by name prefix and showing each skill's first description sentence. It reads the current skill files each time it runs.

In plain words
What is it for?
Use it when exploring a repository's skills or checking what capabilities are available. It can print a compact or more detailed listing.
Why use it?
It gives people a current overview of available skills without relying on a manually maintained list.

Skill for Claude CodeCodex

Part of the magpie plugin — 45 skills shipped together

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/apache/magpie/list-skills
Any agent
npx skills add apache/magpie --skill list-skills
Clone the repo
git clone --depth 1 https://github.com/apache/magpie

Made for: Claude Code, Codex.

Or install magpie, the plugin that ships this one along with the rest of its 45 skills.

Per session 89 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,057 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 $0.00089 $0.01057
Opus 5 $0.00044 $0.00528
Sonnet 5 $0.00018 $0.00211
Haiku 4.5 $0.00009 $0.00106

Measured 3d ago against content hash 9bcac608bc6f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

magpie-list-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 3d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/list_skills.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/list-skills/SKILL.md · 117 lines

How it starts

The opening of the file, as written. The whole thing — 117 lines — stays where its author put it; the contents beside it link to each section on GitHub.

list-skills

Print a human-readable index of the skills in this repository. The index is generated on every run from the live .claude/skills/*/SKILL.md files — there is no cached copy to keep in sync. The skill exists for humans (newcomers reading the repo, maintainers checking what is available); agents route invocations via the same frontmatter the script reads, so this skill is purely informational.


Prerequisites

  • Python 3.9+ on PATH with PyYAML importable. The framework's Python toolchain already meets this; no extra setup.

Step 1 — Run the listing script

Run the bundled script and present its output to the user verbatim:

python3 .claude/skills/magpie-list-skills/scripts/list_skills.py

For a layout that puts each description on its own indented line (easier to read when descriptions are long), pass --verbose:

python3 .claude/skills/magpie-list-skills/scripts/list_skills.py --verbose

The script:

  • walks .claude/skills/*/SKILL.md relative to its own location;
  • parses each skill's YAML frontmatter for name + description;
  • groups skills by family prefix (the first hyphen-separated token, with pr-management recognised as a two-token family — see KNOWN_TWO_TOKEN_FAMILIES);
  • prints each skill with the first sentence of its description.

When a new multi-token family appears (e.g. a hypothetical docs-build-*), add the prefix to KNOWN_TWO_TOKEN_FAMILIES in scripts/list_skills.py; otherwise the new skills land under the single-token head.

Read the full file on GitHub · 117 lines

Files

What ships with it

1 file 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.

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. 3d ago First seen · 117 lines · 89 tokens per session scan A 9bcac608bc6f

Subscribe to this mod's changes

magpie-list-skills is a skill published in the GitHub repository apache/magpie (84 stars, last pushed 4d ago), licensed Apache-2.0. It adds 89 tokens to every session and 1,057 once invoked, about $0.0004 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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