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Skill / OpenAI

Plugin Creator Codex Skill

Create and scaffold plugin directories for Codex with a required .codex-plugin/plugin.json, optional plugin folders/files, and baseline placeholders...

Docs reviewedChecked 2026-09-20Runtime not tested

What it adds

Create and scaffold plugin directories for Codex with a required .codex-plugin/plugin.json, optional plugin folders/files, and baseline placeholders you can edit before publishing or testing. Use when Codex needs to create a new local plugin, add optional plugin structure, or generate or update repo-root .agents/plugins/marketplace.json entries for plugin ordering and availability metadata.

productivity

Get set up

  1. marketplace.json always lives at /.agents/plugins/marketplace.json.
  2. For a home-local plugin, use the same convention with as the root:
  3. Marketplace root metadata supports top-level name plus optional interface.displayName.
  4. Treat plugin order in plugins[] as render order in Codex. Append new entries unless a user explicitly asks to reorder the list.
  5. displayName belongs inside the marketplace interface object, not individual plugins[] entries.
Read the installation source

Before you install

    Compatibility & limitations

    Documented for ChatGPT desktop app, Codex CLI, Codex IDE extension

    Cursor: Not confirmed for Cursor.

      This listing is based on source documentation. We have not installed or runtime-tested this asset.

      How it fits together

      Dispatching Parallel Agents · SkillUse when facing 2+ independent tasks that can be worked on without shared state or sequential dependencies.Using Git Worktrees · SkillUse when starting feature work that needs isolation from current workspace or before executing implementation plans - ensures an isolated workspace...Define Goal · SkillHelp the user define a concrete, measurable goal before starting work, especially when they ask to use the goal tool, create a goal, set an...Migrate to Codex · SkillMigrate supported instruction files, skills, agents, and MCP config into Codex project and global files.Airtable · PluginAdd structured data to ChatGPT.Dropbox · PluginAccess, save and share files.Plugin Eval · PluginStart from chat, then evaluate or benchmark locally.

      Sources & provenance

      Reviewed 2026-09-20. Source revision: main (mutable; commit not pinned).