Darwin Skill Optimizer
alchaincyf/darwin-skill
Scores SKILL.md files on a nine-dimension rubric, then improves them in a keep-or-revert loop with independent judge agents, test prompts, git history and human checkpoints.
“세션 종료 시 Memory, Handoff를 자동 정리. /pack”
Install Session Pack
$ npx skills add ten-builder/ten-builder --skill session-pack -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install ten-builder/ten-builder session-pack --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/ten-builder/ten-builder.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/session-pack .claude/skills/session-pack && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "session-pack" agent skill from https://github.com/ten-builder/ten-builder/tree/main/skills/session-pack into .claude/skills/session-pack/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "session-pack", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/ten-builder/ten-builder/tree/main/skills/session-packType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add ten-builder/ten-builder --skill session-pack -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install ten-builder/ten-builder session-pack --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ten-builder/ten-builder.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/session-pack .agents/skills/session-pack && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "session-pack" agent skill from https://github.com/ten-builder/ten-builder/tree/main/skills/session-pack into .agents/skills/session-pack/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "session-pack", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add ten-builder/ten-builder --skill session-pack -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install ten-builder/ten-builder session-pack --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ten-builder/ten-builder.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/session-pack .cursor/skills/session-pack && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "session-pack" agent skill from https://github.com/ten-builder/ten-builder/tree/main/skills/session-pack into .cursor/skills/session-pack/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "session-pack", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/ten-builder/ten-builder.git --path skills/session-pack--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add ten-builder/ten-builder --skill session-pack -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install ten-builder/ten-builder session-pack --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ten-builder/ten-builder.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/session-pack .gemini/skills/session-pack && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "session-pack" agent skill from https://github.com/ten-builder/ten-builder/tree/main/skills/session-pack into .gemini/skills/session-pack/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "session-pack", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install ten-builder/ten-builder session-packInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add ten-builder/ten-builder --skill session-pack -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/ten-builder/ten-builder.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/session-pack .github/skills/session-pack && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "session-pack" agent skill from https://github.com/ten-builder/ten-builder/tree/main/skills/session-pack into .github/skills/session-pack/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "session-pack", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add ten-builder/ten-builder --skill session-pack -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install ten-builder/ten-builder session-pack --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ten-builder/ten-builder.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/session-pack .opencode/skills/session-pack && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "session-pack" agent skill from https://github.com/ten-builder/ten-builder/tree/main/skills/session-pack into .opencode/skills/session-pack/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "session-pack", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
session-pack- GitHub stars
- 111
- Token cost
- ~1.9k tokens
- SKILL.md length
- 514 words
- Files
- 5 (incl. references)
- Skills in repo
- 3
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
- Works in 6 steps: 데이터 수집 + 세션 요약 → 에이전트 병렬 분석 → 중복 검증 (순차) → …
- SKILL.md covers Trigger Keywords, Architecture, Agents and Phase 1: 데이터 수집 + 세션 요약, plus 6 more sections
- Calls git
About this skill
Session Pack is a skill in ten-builder/ten-builder (111 stars). Its SKILL.md is about 1.9k tokens, with 4 other files in the folder (references). Licence: Custom licence.
Workflow steps
6 steps, taken from the step headings in SKILL.md.
- 데이터 수집 + 세션 요약
- 에이전트 병렬 분석
- 중복 검증 (순차)
- 제안 표시
- 적용
- 확인 리포트
What it can do on your machine
Read from SKILL.md and the folder at commit 23d2a64. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
git
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use git, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Session Pack loads about 1.9k tokens when it runs, and up to ~2k if it reads all its reference files. Until then it costs about 13 tokens; SKILL.md has 514 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 514 words (~1,873 tokens).
“세션 중 대화한 내용을 3개 전문 에이전트가 병렬 분석하여 Memory와 Handoff에 자동 반영합니다.”
- name
- session-pack
- user_invocable
- true
Files
SKILL.md and 4 other files (references) in skills/session-pack of ten-builder/ten-builder.
- SKILL.md
- agents/duplicate-checker.md
- agents/followup-planner.md
- agents/memory-extractor.md
- references/handoff-template.md
Open the folder on GitHubat commit 23d2a64
Compare with similar skills
Session Pack next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Session Pack this skillten-builder/ten-builder | 111 | — | ~1.9k | Automated safety check: Pass | Custom licence | |
| Darwin Skill Optimizeralchaincyf/darwin-skill | 6.2k | 1 repos | ~4.7k | Automated safety check: Pass | MIT | |
| CodeGraph Agent Evalcolbymchenry/codegraph | 73k | — | ~950 | Automated safety check: Pass | MIT | |
| Neat-Freak Knowledge CloseoutKKKKhazix/khazix-skills | 21k | — | ~1.9k | Automated safety check: Pass | MIT | |
| O2 Review Loopopenobserve/openobserve | 22k | — | ~3.7k | Automated safety check: Pass | AGPL-3.0 | |
| Beads Task Memorygastownhall/beads | 28k | — | ~1.2k | Automated safety check: Pass | MIT |
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CodeGraph Agent Eval
colbymchenry/codegraph
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Neat-Freak Knowledge Closeout
KKKKhazix/khazix-skills
Brings project docs, agent rule files, authorized memory and leftover workspace files back in line with what the code and runtime actually do at the end of a work session.
O2 Review Loop
openobserve/openobserve
Splits a change into planner, coder and independent reviewer roles: you confirm a spec, a subagent implements it, and a separate reviewer checks each round's local WIP commit.
Beads Task Memory
gastownhall/beads
Tracks multi-session work with dependencies in the bd issue tracker so the agent can find ready tasks and recover its context after conversation compaction.
Session History Search
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Searches past Claude Code, Codex and Cursor sessions and summarizes what was worked on, tried or decided, using extraction scripts instead of reading raw logs.
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Related
Works with
Categories
Questions about Session Pack
How do I install Session Pack in Claude Code?
Run `npx skills add ten-builder/ten-builder --skill session-pack -a claude-code`. Or copy the skill folder (skills/session-pack in ten-builder/ten-builder) into .claude/skills/session-pack in your project. Claude Code loads it when a task matches its description.
How do I install Session Pack in Codex?
Run `npx skills add ten-builder/ten-builder --skill session-pack -a codex`. Or copy the skill folder (skills/session-pack in ten-builder/ten-builder) into .agents/skills/session-pack in your project. Codex loads it when a task matches its description.
Can I use Session Pack in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add ten-builder/ten-builder --skill session-pack -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/session-pack, .gemini/skills/session-pack, .github/skills/session-pack and .opencode/skills/session-pack in your project.
What does Session Pack need to run?
Going by SKILL.md and its folder, Session Pack needs the command-line tools its instructions call (git).
Does Session Pack access the network?
SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Session Pack safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Session Pack use?
Session Pack has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Session Pack use?
About 1.9k tokens (SKILL.md is roughly 7.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 173 tokens, read only when the agent opens those files.
What are the alternatives to Session Pack?
Skills that share tags, products or a category with Session Pack: Darwin Skill Optimizer (alchaincyf/darwin-skill, 6.2k stars), CodeGraph Agent Eval (colbymchenry/codegraph, 73k stars), Neat-Freak Knowledge Closeout (KKKKhazix/khazix-skills, 21k stars) and O2 Review Loop (openobserve/openobserve, 22k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Session Pack?
ten-builder (a GitHub organization) maintains it in ten-builder/ten-builder, which has 111 GitHub stars. The repository holds 3 skills in this directory. The repository was last updated on June 13, 2026.
Source: ten-builder/ten-builder on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.