Is the Project Butler skill free?

Yes. The skill itself is free from JamesShi96/project-butler. SkillProof publishes the install command and an independent test verdict at no cost.

What is the Project Butler SkillProof Score?

8.8/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 7/10, docs & honesty 5/5.

How do I install Project Butler?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use Project Butler with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

Project Butler

Cross-session project memory for AI coding agents: session logs, handoff, TODO, wiki, status

by JamesShi96 · JamesShi96/project-butler

Tested · Works

Install — copy the command Download source ↗

Test report

Verdict: Tested · Works
Score: 8.8/10
Tested: Jul 31, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Aug 10, 2026 · 4969a83

Fetched root SKILL.md; spot-checked references/update-check.md, scripts/check-update.sh, references/file-templates.md, references/project-profile-system.md (all HTTP 200). Read check-update.sh fully: it only does git fetch/pull on its own dir and greps CLAUDE.md for a language token — no curl|sh, base64, or exfiltration; throttled to once/24h with an opt-out env var. Trigger: judged "end session", "整理文件", "status where are we" as loads and "what's the current git status", "set up a new React project with Vite" as non-loads (5/5, though "status"/"setup" carry mild keyword-collision risk). Output test: wrote /private/tmp/.../scratchpad/baseline.md (9-line prose, 0 headers, no per-task fields) vs skill-log.md following the Session Log Format strictly (29 lines, 7 canonical headers, each pending task with the mandated Owner|Deadline|Dependencies scaffold, plus a surfaced CLAUDE.md candidate the baseline omitted).

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 5/5
Triggers reliably 5/5
Output vs. baseline 7/10
Docs & honesty 5/5

What Project Butler does

Maintains a standardized project-memory stack (CLAUDE.md, PROJECT.md wiki, session-handoff, TODO, session logs, update log, docs index, profile config) so coding agents resume projects without re-explanation. Triggers on /project-butler, "end session"/"收工", "continue"/"接着上次", "status", "organize files"/"整理文件", "sync wiki", "review claude", and language switching. Includes a daily git-based version freshness check that offers to self-update.

How to install Project Butler

git clone --depth 1 https://github.com/JamesShi96/project-butler.git ~/.claude/skills/project-butler
# SKILL.md sits at the repo root, so clone straight into the skill dir.
# No API keys or external deps. Optional: the skill runs scripts/check-update.sh
# (a daily `git fetch` against its own repo) to offer self-updates; set
# PROJECT_BUTLER_NO_UPDATE_CHECK=1 to silence it. Works with Claude Code, and
# Cursor (.cursor/rules) / Codex (AGENTS.md) via templates it can generate.

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger Project Butler

/project-butler Cross-session project memory for AI coding agents: session logs, handoff, TODO, wiki, status

It also activates on plain-language prompts like these:

Set up project memory for this new project
Close out this session and update the log
Organize the files in this project folder

Frequently asked questions

Is the Project Butler skill free?: Yes. The skill itself is free from JamesShi96/project-butler. SkillProof publishes the install command and an independent test verdict at no cost.
Does Project Butler work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 31, 2026. Verdict: Tested · Works. Fetched root SKILL.md; spot-checked references/update-check.md, scripts/check-update.sh, references/file-templates.md, references/project-profile-system.md (all HTTP 200). Read check-update.sh fully: it only does git fetch/pull on its own dir and greps CLAUDE.md for a language token — no curl|sh, base64, or exfiltration; throttled to once/24h with an opt-out env var. Trigger: judged "end session", "整理文件", "status where are we" as loads and "what's the current git status", "set up a new React project with Vite" as non-loads (5/5, though "status"/"setup" carry mild keyword-collision risk). Output test: wrote /private/tmp/.../scratchpad/baseline.md (9-line prose, 0 headers, no per-task fields) vs skill-log.md following the Session Log Format strictly (29 lines, 7 canonical headers, each pending task with the mandated Owner|Deadline|Dependencies scaffold, plus a surfaced CLAUDE.md candidate the baseline omitted).
What is the Project Butler SkillProof Score?: 8.8/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 7/10, docs & honesty 5/5.
How do I install Project Butler?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use Project Butler with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.