/config-diff

Config Diff Command

Compare your current Claude Code configuration with a previously saved setup script to see what has changed.

Arguments

• setup-script (required): Path to a previously generated setup script (e.g., claude_setup.sh)

Instructions

1. Verify the provided setup script exists and is readable.

2. Extract configuration from the setup script by parsing the commands:

   • claude plugin marketplace add <url/repo> entries
   • claude mcp add <name> ... entries
   • claude plugin install <id> entries

3. Get current configuration from:

   • ~/.claude/plugins/known_marketplaces.json for marketplaces
   • ~/.claude.json for MCP servers
   • ~/.claude/settings.json for enabled plugins

4. Compare and categorize items into:

   • Added (in current config but not in saved script)
   • Removed (in saved script but not in current config)
   • Unchanged (in both)

5. Display the diff in a clear format.

Example Usage

/config-diff claude_setup.sh
/config-diff ~/backups/old_config.sh

Example Output

Configuration Diff: claude_setup.sh vs Current Config

=== Marketplaces ===
  + phlubucek/new-plugins     (added)
  - old-marketplace/plugins   (removed)
  = phlubucek/claude-plugins  (unchanged)

=== MCP Servers ===
  + greptile                  (added)
  = context7                  (unchanged)
  = playwright                (unchanged)

=== Plugins ===
  + superpowers               (added)
  - old-plugin                (removed)
  = pr-review-toolkit         (unchanged)

Summary:
  Marketplaces: 1 added, 1 removed, 1 unchanged
  MCP Servers: 1 added, 0 removed, 2 unchanged
  Plugins: 1 added, 1 removed, 1 unchanged

Parsing Logic

The command should use grep/regex to extract:

# Marketplaces
grep "claude plugin marketplace add" script.sh | awk '{print $5}'

# MCP servers (name is the first arg after 'claude mcp add')
grep "claude mcp add" script.sh | awk '{print $4}'

# Plugins
grep "claude plugin install" script.sh | awk '{print $4}'

Error Handling

• If the setup script doesn't exist, inform the user
• If the script is not a valid Claude setup script, show a warning
• If there are no differences, show "Configurations are identical"