Repomix Cache Refresh - Post-Workflow Optimization

Purpose: Keep Repomix cache fresh after file modifications for optimal token efficiency. Trigger: End of any workflow that modifies source code, configs, or documentation. Performance: ~2.4 seconds overhead, 70% token savings on subsequent operations.

Why This Matters

Repomix compresses codebases into AI-friendly format, providing 70% token reduction on file operations.

Problem: If cache becomes stale, subsequent commands work with outdated context. Solution: Refresh cache at end of workflows that modify relevant files.

Cache Strategy:

Session Start → Use existing cache (from previous command)
Command N Executes → Uses current cache
Command N Completes → Refresh if files changed
Command N+1 Executes → Uses fresh cache

When to Invoke

Invoke this skill at the END of:

• /ms command workflows
• /audit command workflows
• /build command workflows
• Any multi-agent workflow that modifies files

Skip refresh when:

• Read-only operations (no files modified)
• Only build artifacts changed (dist/, node_modules/)
• Only logs or temporary files changed

Relevant File Patterns

Include (triggers refresh)

Exclude (skip refresh)

Implementation

At workflow completion, execute this logic:

// 1. Collect modified files from workflow
const modifiedFiles = workflowResults.flatMap(r => r.filesModified || []);

// 2. Filter to relevant files
const relevantFiles = modifiedFiles.filter(file => {
  // Exclude build artifacts and dependencies
  if (file.match(/(node_modules|dist|build|\.turbo|\.log|\.repomix-output)/)) {
    return false;
  }
  // Include source code, configs, docs
  return file.match(/\.(ts|tsx|js|jsx|json|md|ya?ml)$/);
});

// 3. Refresh if relevant files changed
if (relevantFiles.length > 0) {
  // Run: npx repomix --config .repomix.config.json
  console.log(`Refreshing Repomix cache (${relevantFiles.length} files changed)...`);
} else {
  console.log("No relevant changes, cache still fresh");
}

Execution Command

When refresh is needed, run:

npx repomix --config .repomix.config.json

Requirements:

• .repomix.config.json must exist in project root
• Node.js/npm available
• ~2.4 seconds execution time

Performance Metrics

Output Messages

Use these consistent messages:

# When refreshing
Refreshing Repomix cache ({N} files changed)...
Repomix cache ready for next command

# When skipping
No relevant changes, Repomix cache still fresh

# When no config found
Repomix config not found, skipping cache refresh

Integration Notes

For command authors:

• Reference this skill at end of workflow section
• Ensure agents report filesModified: string[] in output
• Don't duplicate the logic - just invoke this skill

For CLAUDE.md:

• Reference skill location for implementation details
• Keep summary brief, point to skill for full docs