Building claude portability kit

Building a Claude Portability Kit

Philosophy — capability preservation, not work preservation

The goal is to preserve the capability set the user has built up — agents, skills, plugins, integrations, orchestration logic, host-side tooling — and not their work-in-progress (auto-memory, saved plans, per-project state). When the user pushes back on backing up project-level state, accept it: the kit gets smaller, cleaner, and the restore is faster.

Concrete success criterion: drop the kit on any new Mac → claude login → run one script → working stack in ~20 minutes.

If you find yourself capturing things that "might be useful" without a clear capability they preserve, stop and challenge it. The kit is not a backup utility.

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The seven-folder skeleton

Every portability kit gets exactly this shape. Folder boundaries are not arbitrary — they match the seven distinct restoration paths.

<KitName>/
├── CLAUDE.md            ← orchestration logic, precedence rules, org chart
├── MEMORY.md            ← memory-system design + restoration paths (descriptive)
├── BOOTSTRAP.md         ← step-by-step new-Mac runbook
├── CLAUDE-global.md     ← live snapshot of ~/.claude/CLAUDE.md
├── settings.json        ← live snapshot of ~/.claude/settings.json
├── Agents/              ← README + every custom agent .md
├── Skills/              ← README + every active skill dir (symlinks resolved!)
├── MCP/                 ← README + mcp.template.json with secrets REDACTED
├── Plugins/             ← README + installed_plugins.json + known_marketplaces.json + local-dir marketplace cache
├── Connectors/          ← README only (account-bound, no local files)
└── Tooling/             ← README + Brewfile + npm-globals.json + restore.sh

The canonical kit already exists as a git repo at /Users/Dhiraj/dev/connecting-dots/CONTEXT/Personal Projects/Claude Agents and Skills (PORTABILITY KIT)/ (remote: github.com/build-with-dhiraj/ai-workflow-framework-portability-kit). Before building anything, LOCATE this existing kit and REFRESH it in place (see "Maintenance" below) — do NOT create a new kit folder elsewhere (e.g. ~/Claude Agents and Skills/); that just produces a redundant, unlinked duplicate. Reference its structure and tone when filling gaps.

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Phase 1 — Recon the source machine

Inventory in parallel — this is read-only and fast:

ls -la ~/.claude/
ls -la ~/.claude/agents/
ls -la ~/.claude/skills/         # note which entries are lrwxr-xr-x (symlinks)
cat ~/.claude/plugins/installed_plugins.json
cat ~/.claude/plugins/known_marketplaces.json
cat ~/.claude/settings.json
cat ~/.claude/mcp.json                          # WARNING: contains secrets
cat ~/.claude/mcp-needs-auth-cache.json         # account-bound connector inventory

Look for:

• Symlinked skills → they target an upstream library (commonly ~/.agents/skills/). Resolve them on copy.
• Local-directory marketplace sources in known_marketplaces.json → the actual marketplace lives in ~/.cache/plugins/<slug>/. That cache directory must be embedded in the kit or the marketplace won't reinstall.
• Secrets in mcp.json → Bearer JWTs, API keys, OAuth tokens. Never copy verbatim.

Also check for things you might NOT need to capture (often misled-into-snapshotting):

• ~/.claude/commands/ — only if it exists (custom slash commands)
• ~/.claude/keybindings.json — only if it exists
• hooks key in settings.json — only if user-defined (not plugin-provided)

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Phase 2 — Map the layered architecture

The kit's root CLAUDE.md documents how the pieces fit together. Use seven layers:

#	Layer	Examples
1	Orchestration	Top-level Claude Code session, Engineering Manager mode
2	Process skills	brainstorming, tdd, diagnose, gepetto, grill-me, prototype
3	Specialist agents	engineering-frontend-developer, engineering-solidity-…, etc.
4	Implementation skills	supabase, threejs-animation, flutter-*, langfuse
4½	Tools & integrations (orthogonal)	MCP servers, plugin-bundled MCPs, account connectors
5	Memory & state	auto-memory, context kernel
6	Governance	evaluating-skill-necessity, managing-skills-library

Layer 4½ is orthogonal to the agent stack — any layer can call any tool. Diagram this explicitly; it prevents the user from thinking integrations are owned by one specialist.

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Phase 3 — Resolve precedence between overlapping skills

The kit must answer "when two skills could do the job, which one wins?" Document explicit rules and concrete mappings. Typical contradictions in a mature setup:

Job	✅ Use	❌ Don't use
TDD	tdd (Mattpocock)	superpowers:test-driven-development
Debugging	diagnose (Mattpocock)	superpowers:systematic-debugging
Writing a new skill	write-a-skill (Mattpocock)	superpowers:writing-skills
Architectural pre-planning	gepetto	superpowers:writing-plans (use AFTER gepetto)
Vercel deployment	vercel-plugin:* skills	local vercel-deployment (deprecated)

Also document "narrowest-match-wins" cluster cascades — e.g., for 3D web work: threejs-animation (animation-specific) → r3f-best-practices (R3F non-animation) → 3d-web-experience (general).

And: user instructions always override any skill.

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Phase 4 — Copy with symlink resolution

# Agents are plain .md files
cp ~/.claude/agents/*.md <Kit>/Agents/

# Skills MUST resolve symlinks (-L flag) so the kit is self-contained
rsync -aL --exclude='.archive*' ~/.claude/skills/ <Kit>/Skills/

# Plugin manifests
cp ~/.claude/plugins/installed_plugins.json <Kit>/Plugins/
cp ~/.claude/plugins/known_marketplaces.json <Kit>/Plugins/

# Local-directory marketplace cache (CRITICAL — without it the marketplace fails to reinstall)
mkdir -p <Kit>/Plugins/<marketplace-slug>-source/
rsync -a ~/.cache/plugins/<marketplace-slug>/ <Kit>/Plugins/<marketplace-slug>-source/

# Settings + global CLAUDE.md
cp ~/.claude/settings.json <Kit>/
cp ~/.claude/CLAUDE.md <Kit>/CLAUDE-global.md

The -L flag on rsync is the make-or-break detail. Without it the kit holds dead symlinks; with it the kit is portable.

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Phase 5 — Redact secrets in templates

Never copy mcp.json verbatim. Create MCP/mcp.template.json with placeholders:

{
  "_comment": "Replace REDACTED_* with live secrets on the new Mac.",
  "mcpServers": {
    "<server-name>": {
      "type": "http",
      "url": "https://...",
      "headers": { "Authorization": "Bearer REDACTED_PUT_<NAME>_TOKEN_HERE" }
    }
  }
}

Then BOOTSTRAP.md instructs the user to paste live secrets from their password manager.

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Phase 6 — Document the three MCP/integration layers

This is where users get confused. Explain explicitly:

Layer	Where configured	Survives Mac wipe?
Local MCP	~/.claude/mcp.json (manual)	⚠️ Only the file — secrets must be re-pasted
Plugin-bundled MCP	~/.claude/plugins/cache/<plugin>/	✅ Auto-restored when plugin reinstalls
Account Connectors	claude.ai → Settings → Connectors	✅ Auto-reattach on claude login

Bulk of integrations are usually category 3 — derive the inventory from ~/.claude/mcp-needs-auth-cache.json.

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Phase 7 — Capture host-side tooling

mkdir -p <Kit>/Tooling
brew bundle dump --force --file=<Kit>/Tooling/Brewfile
npm list -g --depth=0 --json > <Kit>/Tooling/npm-globals.json

brew bundle dump captures leaf packages only — that's correct. Transitive deps auto-pull on reinstall. Don't try to capture everything brew list returns; you'll over-specify.

If the user uses pyenv, rbenv, mise, asdf — capture those configs too. Otherwise skip.

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Phase 8 — Write the restore script

Critical patterns:

• #!/usr/bin/env bash + set -euo pipefail
• Single [y/N] confirmation at the top
• Copy settings.json early (around step 4 of 7). The shipped settings.json has "Bash(*)" in permissions.allow, so after that step Claude Code stops asking permission for each subsequent command in the run.
• Every operation must be idempotent: rsync, brew bundle, npm install -g, claude plugin install all skip already-installed
• Wrap claude plugin marketplace add in || true (duplicates throw)
• Final step is manual — print instructions to paste the live secrets into mcp.template.json

Skeleton:

#!/usr/bin/env bash
set -euo pipefail
KIT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
CLAUDE_HOME="$HOME/.claude"

read -r -p "Continue? [y/N] " confirm
[[ "$confirm" =~ ^[Yy]$ ]] || { echo "Aborted."; exit 0; }

# 1. Homebrew (install if missing)
# 2. brew bundle --file=$KIT_DIR/Tooling/Brewfile
# 3. global npm packages from npm-globals.json
# 4. cp settings.json and CLAUDE-global.md into ~/.claude/  ← Bash(*) becomes allowed here
# 5. rsync Agents/ and Skills/ into ~/.claude/, --exclude='README.md'
# 6. Restore Vercel-style local-dir marketplace cache, register marketplaces, install plugins
# 7. Print manual-step instructions for MCP secrets

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Phase 9 — Document and cross-reference

Each folder gets its own README. The root CLAUDE.md has an inventory table with one row per folder, and a source-of-truth precedence:

1. Live ~/.claude/CLAUDE.md — highest (after restore)
2. The folder's own README — closer to its source
3. Root CLAUDE.md — general orchestration

When these disagree, the higher tier wins. State this explicitly in the kit.

The BOOTSTRAP.md must have:

• A "fast path" callout at the very top pointing at Tooling/restore.sh
• Numbered steps 0–10 for the manual path (in case someone wants to do it piecemeal)
• A capability dependency matrix (which capability needs which CLI / env var / OAuth flow)
• A troubleshooting section
• Source-of-truth precedence rules

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Phase 10 — Verify

After running the restore on a new Mac:

# Count parity
ls ~/.claude/agents/*.md | wc -l    # match Agents/ count
ls ~/.claude/skills/ | wc -l        # match Skills/ count
claude plugin list                   # match installed_plugins.json

# Tooling parity
brew bundle check --file=<Kit>/Tooling/Brewfile   # "satisfied"
npm list -g --depth=0                              # match npm-globals.json

# Smoke test
# Launch claude, ask: "Confirm Engineering Manager mode is active and list all custom agents"

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What NOT to capture

This is as important as what to capture. Refuse to add these even if asked:

Don't capture	Why
OAuth tokens, JWTs, API keys	Security failure. Always redact and document where the live secret lives (1Password)
~/.claude.json	Contains account-bound state; auto-restored on claude login
~/.claude/projects/<workspace>/memory/	Per-workspace work; not a capability
~/.claude/plans/, ~/.claude/todos/, ~/.claude/sessions/	Ephemeral conversation state
~/.claude/telemetry/, ~/.claude/cache/, ~/.claude/shell-snapshots/	Local-only state, no value to preserve
System packages (git, python3, curl)	Come from macOS; don't pin
Per-project .claude/, .kernel/, .specify/ directories	Live in the project repo; survive via git remote, not via this kit
Shell config (~/.zshrc, ~/.bash_profile)	Out of scope — not a capability, and the user usually has strong opinions

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Common pitfalls

1. Forgetting rsync -L for skills → kit holds dead symlinks → kit isn't portable.
2. Including OAuth tokens in mcp.template.json → security failure. Always redact.
3. Inventing brew/npm package lists instead of dumping live state → snapshot drifts from reality immediately.
4. Skipping the local-directory marketplace cache → the Vercel-style local-dir marketplaces fail to reinstall, blocking entire plugins.
5. Asking for per-command permission in restore.sh → wrong. Copy settings.json early so Bash(*) is allowed for the remainder of the script.
6. Capturing work-in-progress without asking → over-scoping. When in doubt, ask the user what they care about: capability or work?
7. Writing skill precedence rules without concrete examples → vague. Always show the "use X not Y" mappings.
8. One giant README at root, no per-folder READMEs → users can't drill in. Each folder gets its own README.
9. Forgetting to update top-level docs after adding a new folder → stale cross-references. After any structural change, re-audit CLAUDE.md §1 (inventory) and §8 (source-of-truth) plus BOOTSTRAP.md step list.

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Maintenance — keeping the kit current

When the source machine changes (new agent, new plugin, new brew package), re-snapshot:

# Custom agents
cp ~/.claude/agents/*.md <Kit>/Agents/

# Skills (resolve symlinks!)
rsync -aL --exclude='.archive*' --delete ~/.claude/skills/ <Kit>/Skills/

# Plugin manifests
cp ~/.claude/plugins/{installed_plugins,known_marketplaces}.json <Kit>/Plugins/

# Global config
cp ~/.claude/CLAUDE.md <Kit>/CLAUDE-global.md
cp ~/.claude/settings.json <Kit>/

# Host-side tooling
brew bundle dump --force --file=<Kit>/Tooling/Brewfile
npm list -g --depth=0 --json > <Kit>/Tooling/npm-globals.json

Run this monthly, or any time the user mentions adding/removing a capability.

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Workflow at a glance

Recon ──► Map layers ──► Resolve precedence ──► Copy (resolve symlinks)
                                                       │
                                                       ▼
                       Redact secrets ◄──── Document MCP/Connector layers
                              │
                              ▼
                      Capture tooling ──► Write restore.sh ──► Cross-link READMEs
                                                                        │
                                                                        ▼
                                                                     Verify

The output of a successful run is a folder a future-you (or future-Claude) can pick up cold and turn back into a working machine.