Summary

• Follow-up to Expose configured marketplace source in plugin list JSON #26417 and Add JSON output for plugin subcommands #26631
• Add marketplaceSource to codex plugin marketplace list --json entries for configured marketplaces
• Reuse the existing marketplaceSource shape from codex plugin list --json
• Keep human-readable marketplace list output unchanged
• Add CLI coverage for configured local and git marketplace sources

Example:

{
  "marketplaces": [
    {
      "name": "debug",
      "root": "/path/to/.codex/.tmp/marketplaces/debug",
      "marketplaceSource": {
        "sourceType": "git",
        "source": "https://example.com/acme/agent-skills.git"
      }
    }
  ]
}

Validation

• just fmt
• just fix -p codex-cli
• just test -p codex-cli marketplace_list
• just test -p codex-cli