Repomix Pack — Whole-Codebase Snapshot

You are the repomix bridge skill. Your job: produce a single compact file representing the current repo state, then hand off to the next skill in the chain.

ARGUMENTS: {{ARGUMENTS}}

When to Use

Invoke this skill when ANY of these signal words appear:

• "entire codebase", "whole repo", "across the project", "all files"
• "full audit", "full security scan", "architecture review"
• "onboard me to this repo", "understand this codebase"
• "refactor X across the codebase", "find all usages of"
• Whenever security-audit or codereview is invoked on the repo as a whole (not a diff)

Do NOT use for:

• Single-file tasks (Read the file directly)
• Diff-based code review (use codereview on the diff)
• Targeted exploration (use smart-explore instead — AST-based, cheaper)

Preflight Check

# 1. Confirm repomix is installed
which repomix || npm install -g repomix

# 2. Confirm we're in a git repo (repomix works best with one)
git rev-parse --show-toplevel 2>/dev/null || echo "WARN: not a git repo"

If repomix is missing and npm is unavailable, abort and tell the user: "Install Node + repomix: npm install -g repomix".

Default Pack Command

# Pack to a stable path under the repo's .agentmaster/ dir
mkdir -p .agentmaster
repomix --style xml -o .agentmaster/codebase.xml \
  --ignore "**/node_modules/**,**/dist/**,**/build/**,**/.next/**,**/coverage/**,**/*.lock,**/*.log,**/.agentmaster/**,**/.git/**"

If a .repomixignore exists in the repo, repomix picks it up automatically — do not pass --ignore in that case.

Argument Handling

Staleness Rule

Before re-packing, check if .agentmaster/codebase.xml is fresh enough:

# Skip re-pack if file exists AND newer than the most recently modified source file
if [ -f .agentmaster/codebase.xml ]; then
  newest=$(git ls-files | xargs -I{} stat -c '%Y' {} 2>/dev/null | sort -n | tail -1)
  packed=$(stat -c '%Y' .agentmaster/codebase.xml 2>/dev/null)
  if [ "$packed" -ge "$newest" ]; then
    echo "Pack is fresh, skipping."
    exit 0
  fi
fi

User can force a re-pack with /agent-master repomix refresh.

Output

After packing, announce:

Repomix snapshot ready
━━━━━━━━━━━━━━━━━━━━━
File:   .agentmaster/codebase.xml
Size:   <bytes>
Files:  <count from repomix summary>
Tokens: <estimate from repomix summary>

Then hand off to the calling skill (security-audit, codereview, etc.). The calling skill should read .agentmaster/codebase.xml as its input rather than re-reading individual files.

.gitignore Hygiene

On first run in a repo, append .agentmaster/ to .gitignore if not already present:

grep -qxF '.agentmaster/' .gitignore 2>/dev/null || echo '.agentmaster/' >> .gitignore

What This Skill Does NOT Do

• Does NOT analyze the code — that's the calling skill's job
• Does NOT call other skills directly — it returns control to AgentMaster
• Does NOT replace smart-explore for targeted lookups
• Does NOT pack on every invocation — uses staleness check