Plugins Articles
12 articles across AI Catchup's news, guides, tutorials, and comparisons.
All Plugins articles
How to Build a Claude Code Mod: Files, Hooks, State, and Testing
A Claude Code mod is a plugin whose JavaScript or TypeScript hooks run inside your session. Ask Claude to write one, or create plugin.json, hooks/hooks.json, and a module that exports register. Load it with --plugin-dir, keep state in $.state, then check it with claude plugin validate and claude plugin test.
Claude Code Mods Let Developers Customize the CLI and Desktop App
Anthropic introduced Claude Code mods as a plugin-based way to customize how Claude Code behaves and looks. Small JavaScript or TypeScript modules can add interface elements, change tool calls, or replace built-in features. Mods run with Claude Code's access to your machine, so review their source before installing.
ChatGPT Sites Can Turn MCP Tools Into Plugins and Shareable Work
ChatGPT Sites can host an MCP server whose tools are installed as a plugin in ChatGPT or Codex. Publishing the Site creates the plugin, but access and connected-account authorization still apply. Shareable profiles can showcase Sites and plugins, with privacy, workspace, device, plan, and rollout limits to check.
Claude Opens a Plugin Directory Submission Portal for MCP and Skills
Anthropic launched a Claude directory submission portal on September 25, 2026. Developers on paid Claude plans can submit a remote MCP connector or a GitHub-hosted plugin bundle that packages MCP servers and skills, follow validation and safety review, publish approved versions, and see listing and usage analytics.
Claude Code Adds Plugin Evals for Regression Testing and No-Plugin Baselines
Claude Code now includes `claude plugin eval`, a testing workflow for plugin and skill authors. The command can create cases and graders, run a plugin in isolated non-interactive sessions, compare results with a no-plugin baseline, generate an HTML report, and support CI gates for plugin changes. Evals require Claude Code v2.1.269 or later and consume model usage.
ChatGPT Workspaces Can Sync GitHub Plugin Marketplaces Daily
ChatGPT workspace admins and owners can now import plugin marketplaces from public or private GitHub repositories and keep them synchronized automatically. The feature gives teams a central way to distribute Codex and Claude-compatible plugins while keeping installation policies and app permissions under workspace control.
Codex for Every Role: Role-Specific Plugins, Codex Sites, and Annotations Beyond Code
OpenAI announced six role-specific Codex plugins (62 apps, 110 skills), Sites, and annotations for documents, spreadsheets, and slides on June 2, 2026. As of September 2026, Sites is a public beta on Plus, Pro, Business, Enterprise, and Edu plans, and the plugin directory is shared by ChatGPT and Codex across the desktop app, the web, and Codex CLI.
Codex Build iOS Apps Plugin: Mirror the Simulator in the Browser and Hot-Reload SwiftUI Previews
OpenAI's Build iOS Apps plugin for Codex bundles nine iOS and Swift skills. The June 2026 addition mirrors the iOS Simulator into the Codex in-app browser and hot-reloads Swift Package-backed SwiftUI previews. XcodeBuildMCP handles simulator build, run, and debug. It installs from the /plugins browser in Codex CLI or the Plugins tab in the ChatGPT desktop app.
Claude Code ships a security-guidance plugin for in-session vulnerability checks
Anthropic shipped an official security-guidance plugin for Claude Code. It runs automatic vulnerability checks while Claude edits files, at the end of each turn, and when Claude runs commits or pushes through its Bash tool.
Codex Chrome Extension, Now the ChatGPT Browser Extension: How It Drives a Signed-In Browser for LinkedIn, Salesforce, Gmail, and Internal Tools
OpenAI's Codex Chrome extension is now the ChatGPT browser extension. It lets ChatGPT Work or Codex use your signed-in Chrome, Edge, Brave, Opera, or Vivaldi for sites like LinkedIn, Salesforce, and Gmail. Set it up in the ChatGPT desktop app under Settings > Computer Use, invoke it with @Chrome, and approve each new site.
Codex CLI 0.130.0 Adds `remote-control`, Richer Plugin Sharing Metadata, and Better App-Server Thread Paging
OpenAI shipped Codex CLI 0.130.0 in May 2026. The release adds a new `codex remote-control` command for starting a headless, remotely controllable app-server, improves app-server clients with paging options for large threads (unloaded/summary/full turn items), expands plugin sharing with link metadata and discoverability controls, adds Bedrock auth support for AWS console-login credentials from `aws login` profiles, and fixes several app-server/thread reliability issues.
Codex CLI 0.129.0 Adds Modal Vim Composer, Redesigned Resume/Fork Picker, and a `/hooks` Browser
OpenAI shipped Codex CLI 0.129.0 on May 7, 2026. The release brings modal Vim editing to the TUI composer via `/vim`, a redesigned resume/fork picker, a raw scrollback mode, workspace-aware `/diff`, a new `/hooks` browser with before/after compaction support, expanded plugin management with workspace sharing and share access controls, theme-aware status lines, and Codex Apps auth surfaced through Guardian. Plus a long bug-fix list across Linux/Windows sandboxes, MCP, and TUI input handling.