save-skill

save-skill is a skill for Claude Code, Codex from UniM0cha/self-improving-skills. It costs 101 tokens per session (1,014 once invoked), scanned A, original, MIT.

학습 스킬(SKILL.md)을 사용자에게 파일로 보내 claude.ai '스킬 저장' 등록을 안내한다. 이번 세션에서 증류·수정된 스킬을 세션 종료 전에 영속화할 때, "이 스킬 저장해줘", "스킬 백업해줘", "세션 끝나기 전에 스킬 남겨줘" 등에 사용. 인자 없이 실행하면 미저장 스킬을 자동 감지한다.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: reads .claude/ paths; mentions Claude Code.

Install with agentmods
npx agentmods add skills/unim0cha/self-improving-skills/save-skill
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.

Any agent
npx skills add UniM0cha/self-improving-skills --skill save-skill
Clone the repo
git clone --depth 1 https://github.com/UniM0cha/self-improving-skills

Made for: Claude Code, Codex.

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.

agentmods badge for save-skill

README.md
[![agentmods](https://agentmods.dev/badge/skills/unim0cha/self-improving-skills/save-skill/github.svg)](https://agentmods.dev/skills/unim0cha/self-improving-skills/save-skill)
Your own site
<a href="https://agentmods.dev/skills/unim0cha/self-improving-skills/save-skill"><img src="https://agentmods.dev/badge/skills/unim0cha/self-improving-skills/save-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.

agentmods 80×15 button for save-skill

Your own site · 80×15
<a href="https://agentmods.dev/skills/unim0cha/self-improving-skills/save-skill"><img src="https://agentmods.dev/badge/skills/unim0cha/self-improving-skills/save-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 101 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,014 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.
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 5.1 $0.00101 $0.01014
Opus 5.5 $0.00040 $0.00406
Sonnet 5.5 $0.00020 $0.00203
Haiku 4.5 $0.00010 $0.00101

Measured today against content hash 5c92ef2d5e59, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

save-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 today.

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.

plugins/claude-cowork-self-improving-skills/skills/save-skill/SKILL.md · 56 lines

How it starts

The opening of the file, as written. The whole thing — 56 lines — stays where its author put it; the contents beside it link to each section on GitHub.

학습 스킬을 claude.ai 에 영속화하는 Cowork 전용 흐름입니다. 이 컨테이너의 ~/.claude/skills 는 세션 종료 시 사라지고, 미저장 스킬은 세션 도중에도 주기적 스킬 동기화(약 10분 간격)가 삭제할 수 있으므로(실측 2026-07-16), 증류 직후 바로 이 흐름을 실행하는 것이 안전합니다. 전송 전에 대상 SKILL.md 를 ~/.claude/skills 밖(작업 디렉토리)에도 cp -r 백업해 두면 동기화 삭제에도 복원할 수 있습니다.

1단계 — 대상 결정

인자로 스킬 이름(들)이 주어지면 그 스킬들이 대상입니다. 인자가 없으면 미저장 후보를 자동 감지하세요:

python3 - <<'EOF'
import json, os
skills_dir = os.path.expanduser("~/.claude/skills")
synced = set()
try:
    with open(os.path.join(skills_dir, "manifest.json"), encoding="utf-8") as fh:
        for s in json.load(fh).get("skills", []):
            synced.add(str(s.get("skillId") or ""))
            synced.add(str(s.get("name") or ""))
except Exception:
    pass
unsaved, saved = [], []
for entry in sorted(os.listdir(skills_dir)):
    if entry.startswith("."):
        continue
    p = os.path.join(skills_dir, entry, "SKILL.md")
    if not os.path.isfile(p):
        continue
    head = open(p, encoding="utf-8", errors="ignore").read(2048)
    if "self-improving-skills" not in head and "origin: distilled" not in head:
        continue  # 학습 스킬만 대상 (plugin/anthropic 스킬 제외)
    (saved if entry in synced else unsaved).append(entry)
print("미저장(이번 세션 생성, 세션 종료 시 소실):", unsaved or "없음")
print("저장됨(claude.ai 동기화로 존재):", saved or "없음")
EOF
  • 미저장 목록이 기본 대상입니다.
  • 저장됨 스킬이라도 이번 세션에서 patch 됐다면(사용자가 언급했거나 이 대화에서 수정한 기억이 있으면) 재저장 대상에 포함하세요 — 컨테이너 안의 수정본은 저장하지 않으면 사라집니다.
  • 대상이 없으면 "저장할 학습 스킬이 없습니다"라고 한 줄 보고하고 끝내세요.

2단계 — 저장 거부 규칙 사전 점검

claude.ai '스킬 저장'이 거부하는 두 패턴을 저장 전에 고치세요 (실측 규칙):

  1. 예약어: frontmatter name 에 claude 또는 anthropic 포함 → 디렉토리명과 name 을 함께 예약어 없는 이름으로 변경 (예: claude-code-hook-diagnostics → cloud-hook-diagnostics).
  2. 꺾쇠 태그: description 에 <...> 형태(placeholder 포함, 예: mnt/<folder>) → 일반 표기로 변경 (mnt/폴더명). 본문(body)의 꺾쇠는 무방합니다.

3단계 — 전송과 안내

  1. 각 대상의 SKILL.md 를 SendUserFile 로 보내세요 (caption: 스킬 이름 + 무엇을 하는 스킬인지 한 줄).
  2. 사용자에게 안내하세요: 파일 카드의 '스킬 저장' 버튼을 누르면 claude.ai 계정에 등록되고, 다음 Cowork/Claude Code 세션 컨테이너에 자동 동기화됩니다.
  3. 이미 같은 이름이 등록된 스킬을 재저장한 경우: 갱신인지 중복 생성인지는 claude.ai 동작에 따르므로, 저장 후 설정 > 스킬 목록에서 중복이 생겼는지 확인하고 오래된 쪽을 삭제하도록 한 줄 덧붙이세요.

Read the full file on GitHub · 56 lines

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. today First seen · 56 lines · 101 tokens per session scan A 5c92ef2d5e59

Subscribe to this mod's changes

save-skill is a skill published in the GitHub repository UniM0cha/self-improving-skills (51 stars, last pushed 1mo ago), licensed MIT. It adds 101 tokens to every session and 1,014 once invoked, about $0.0004 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 2026-11-07.

Related

save-skill compared with skills from other repositories

save-skill next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
save-skillUniM0cha/self-improving-skillsSkill511mo agoMITA101Claude Code, Codex
browser-harness-authoringAtlasOmnia/hermes-custom-packSkill7611d agoMITA60Claude Code, Codex
notion-artifact-captureAtlasOmnia/hermes-custom-packSkill7611d agoMITA82Claude Code, Codex
obsidian-memory-architectureAtlasOmnia/hermes-custom-packSkill7611d agoMITA56Claude Code, Codex
hermes-diagnostic-reviewAtlasOmnia/hermes-custom-packSkill7611d agoMITA49Claude Code, Codex
reddit-browse-and-postAtlasOmnia/hermes-custom-packSkill7611d agoMITA54Claude Code, Codex
medical-bill-reconciliationAtlasOmnia/hermes-custom-packSkill7611d agoMITA19Claude Code, Codex