Claude Code and Codex Plugins by JTSternberg
A curated collection of skills, hooks, and automation for Claude Code and
Codex. The two harnesses use different catalogs in this repository, so check
the support matrix before
installing.
Quick Start
Claude Code
Add the marketplace and install any of its 39 listed plugins:
claude plugin marketplace add jtsternberg/claude-plugins
claude plugin install git-tree@jtsternberg
Verify installation:
claude plugin list
Invoke an installed skill as /<plugin>:<skill-name>, using the skill's
frontmatter name. For example: /qa-walkthrough-pr:qa-walkthrough-pr.
Codex
Codex's native catalog currently offers codex, hotline, and the five PR plugins
(address-pr-comments, qa-walkthrough-pr, update-pr-description,
walk-through-work-history, watch-pr-then-action):
codex plugin marketplace add jtsternberg/claude-plugins
codex plugin add codex@jtsternberg
Open /plugins in Codex to browse configured marketplaces, or run
codex plugin list --available --json in a terminal. Start a new session after
installation, then mention a skill as $<plugin>:<skill-name>; for example,
$codex:fable-mode.
To install one self-contained repository skill instead of a whole plugin, see
standalone Codex skills. For commands,
updates, catalog scope, and all 40 plugin names, see the
compatibility guide.
Plugin Highlights
These are selected plugins and workflows. The
support matrix is the complete
40-name inventory and the authority for harness availability.
Skills
Create git worktrees with symlinked dependencies. Perfect for parallel branch work.
Install: claude plugin install git-tree@jtsternberg
Refines headlines using the 5-Part Headline Framework (Number, What, Who, Why, Twist the Knife).
Install: claude plugin install headline-refiner@jtsternberg
Interacts with Obsidian vaults from the terminal using the official Obsidian CLI (v1.12+).
Install: claude plugin install obsidian-cli@jtsternberg
Publish Claude Code /insights reports to GitHub Pages for easy sharing.
Install:
claude plugin marketplace add jtsternberg/claude-usage-data
claude plugin install publish-insights@jtsternberg/claude-usage-data
Generate AI image prompts for blog posts by analyzing content and identifying optimal placement.
Install: claude plugin install generating-blog-images@jtsternberg
Wraps WP-CLI, PHP, MySQL, and Composer commands through LocalWP's sandboxed environment. Auto-detects the correct site from the current directory.
Install: claude plugin install localwp-shell@jtsternberg
Creates self-contained HTML slide presentations from talk prompts, outlines, or content descriptions. Supports dark/light themes, SVG diagrams, and AI-generated illustrations.
Install: claude plugin install slides-presentation@jtsternberg
Exports HTML slide presentations to PDF or PNG screenshots using browser automation. Companion to slides-presentation.
Install: claude plugin install export-presentation@jtsternberg
The Gauntlet Loop as a skill: build a piece, capture what it really produces, put it next to a reference that is already excellent, and let a fresh, harsh critic pick the better one without knowing which is which. The one gap it names goes to the next builder, and the loop repeats until the piece wins. setup writes the run's spec (goal, bar, criteria, capture harness); run drives it, with --status, --stop and --resume. Builders and critics are fresh hotline callees on herdr, and every round is a commit on a gauntlet/<run-id> branch. Requires hotline and herdr.
Install: claude plugin install gauntlet@jtsternberg
Cross-workspace communication for agent sessions — dial another workspace to ask questions, delegate work, or collaborate. Claude Code and Codex can place calls; the current launch transport starts Claude Code receivers. Caller identity comes from Claude Code's native CLAUDE_CODE_SESSION_ID (or Codex's thread ID), with a bundled fingerprint fallback for older clients.
Install: claude plugin install hotline@jtsternberg or codex plugin add hotline@jtsternberg
Metacognitive reasoning frameworks for careful decision-making. Ships chestertons-fence (investigate before removing), pink-elephant (rewrite counterproductive prohibitions as positive directives), interview-mode (after two rejected drafts of the same artifact, stop generating variants and interview the user to build from their own wording), no-meat-proxy (rewrite what you're about to hand over so the reader can relay it in their own words instead of forwarding your text verbatim), and dont-lead-the-witness (when you want a genuine response — testing an agent, asking for a review, questioning the user — ask the way the real situation would, with no hint of the answer you expect, and judge by observation).
Install: claude plugin install thinking-tools@jtsternberg
Tools for managing Claude Code session transcripts — recaps, cleanup, retitling, etc. Ships sessions-weekly-recap (daily/weekly recap notes + macOS launchd installer) and sessions-catch-up (brief yourself on another session — including a claude export-style transcript reader that works on dead sessions).
Install: claude plugin install session-tools@jtsternberg
Turn audio and video into text on macOS. Bundles a MacWhisper CLI wrapper (local file transcription) and a yt-dlp skill (YouTube/Vimeo/URL — captions, description, chapters, or audio download as a transcription fallback). Subs-first for URLs, so a TLDR doesn't require downloading 20 MB of audio.
Install: claude plugin install work-with-media@jtsternberg
Speaks text aloud, or saves it as WAV/MP3, with Ollama's local Phonon model. Describe the voice you want ("cheery female British, a bit faster") and it matches the description to a voice the installed model actually has. Speed is applied with ffmpeg because Phonon has no speed setting of its own.
Install: claude plugin install text-to-speech@jtsternberg
Reads meeting transcripts, summaries, attendees, and notes from the Google AI Edge Foresight macOS app (on-device meeting transcription), so an agent can review today's meetings and draft notes. Writing notes back into the app is opt-in and guarded: compare-and-swap on the current notes, a check that the app is idle, read-back verification, and a 50-entry undo journal with restore. macOS only.
Install: claude plugin install google-foresight@jtsternberg
Research infrastructure for Claude Code. Ships fetch-docs — pulls a URL's raw content into a local file so Claude reads the authoritative source instead of WebFetch's filtered summary. Works on any http/https URL; optional HTML→markdown conversion via npx.
Install: claude plugin install research-tools@jtsternberg
Control cmux (macOS terminal multiplexer / workspace manager) from the command line. Bundled workflows cover the two common agent tasks — opening a side-by-side surface in the current window, and finding / reading / driving another tab by name or on-screen content. Also exposes notifications, sidebar progress pills, tmux-compat commands, SSH remote workspaces, and the embedded browser. Includes an auto-rename skill that summarizes what a tab or workspace is doing (including claude/codex agent sessions) and gives it a concise, meaningful name.
Install: claude plugin install cmux-cli@jtsternberg
Skills for working with — and like — the Fable model (claude-fable-5). Ships fable-delegate: delegation discipline that keeps a Fable main agent in the thinker/boss role — planning, judgment, and reviewing output — while routing file edits, searches, tests, and other mechanical execution to Opus/Sonnet subagents. And fable-mode: the operating stance behind Fable's judgment — own the outcome, not the response — for agents running on Opus-level models — with the habits that stance generates (fix the class not the instance, follow your own diagnosis, spend the user's attention like a budget, verify end-to-end) — plus a Sonnet variant that keeps the stance's values but re-fences autonomy behind bright-line guardrails.
Install: claude plugin install fable@jtsternberg
Codex-native A/B experiments: codex:sol-delegate for Sol-led delegation to Terra and other available models, plus codex:fable-mode and codex:sol-mode for comparing competitive frontier-model stances on Terra.
Install: codex plugin add codex@jtsternberg
Give an agent its own email address — send, receive, reply, forward, and draft mail through the AgentMail API via the official agentmail CLI.
Install: claude plugin install agentmail@jtsternberg
Orchestration stance for a main agent overseeing delegated work. Ships conduct — boss-not-doer discipline for an implement → review → address pipeline: a fresh agent per phase (dispatched with --fresh so the session-routing cache can't hand back the implementer as the "reviewer"), work orders that carry every environment trap a predecessor hit, verify-before-relay, and a Next for you: contract with the human. Binds to hotline and cmux-cli when installed; falls back to subagents and headless sessions. And patient-waiting — the zero-token waiting ladder (background until loop → Monitor → stop and ask), which never machine-polls a human.
Install: claude plugin install maestro@jtsternberg
Hit the 5-hour session limit mid-task? Stop for now and have this session pick the work back up at the reset — context still loaded, zero tokens spent waiting, no resume note needed. Ships until: a Monitor polling the clock, so the notification wakes the current session, which runs the payload itself instead of handing it to a context-free headless or cloud run. Pairs with a budget watcher that reports a reset time — arm it at the warning, not at exhaustion, since a rate-limited request has no turn left to arm anything. Also covers the plain timed case: absolute times, relative delays, and queueing several spaced-out jobs. Not a durable scheduler — the watcher dies with the session, and the skill says so when it arms one. Rung 2 of maestro's patient-waiting ladder with the clock as the watched condition.
Install: claude plugin install delayed-work@jtsternberg
Reads subscription quota and context-window headroom at session start and on prompts. Quota never stops work early: at wrap_up/stop it has the agent arm a delayed-work:until wake-up for the reset and keep going, so a 429 just puts the session to sleep until the refill. A full context window still hands off to a fresh session. RUNWAY_STOP_WORK=1 pauses until the reset instead, with a restart scheduled in the same session. Hooks ship with the plugin. Claude Code only.
Install: claude plugin install runway@jtsternberg (plus delayed-work@jtsternberg)
Workflow skills
Skills for creating git commits from staged or unstaged files with AI-generated messages. The skills are dual-harness compatible, but this repository currently offers the plugin only through its Claude Code catalog.
Skills: commit-staged, commit-unstaged
Install: claude plugin install git-commits@jtsternberg
Five single-purpose PR plugins, installable together or one at a time. pr-workflow
itself is a dependency-only bundle: installing it installs
all five, and you can then disable the bundle to drop the ones you don't want.
Available in both the Claude Code and Codex-native catalogs. Codex does not resolve
plugin dependencies, so the bundle is Claude-only there — install the children directly.
Supports: CODE_CONVENTIONS — loads project conventions before implementing fixes or writing PR descriptions.
Install: claude plugin install pr-workflow@jtsternberg (all five), or one child at a
time — e.g. claude plugin install qa-walkthrough-pr@jtsternberg / codex plugin add qa-walkthrough-pr@jtsternberg
Skills for creating and reviewing Claude Code skills, slash commands, and subagents.
Skills: create-slash-command, create-subagent, review-skill, review-slash-command
Install: claude plugin install skill-tools@jtsternberg
Work through beads epics from start to completion with automatic PR creation.
Skills: tackle-epic, fix-findings-beads-tasks
The skills are dual-harness compatible, but this repository currently offers the plugin only through its Claude Code catalog.
Dependencies: Requires beads
Supports: CODE_CONVENTIONS — loads project conventions before implementation work or fixing findings.
Install: claude plugin install beads-workflow@jtsternberg
Create handoff documents to preserve context between Claude Code sessions.
Skills: handoff, pickup-handoff
Install: claude plugin install handoff@jtsternberg
Status Lines
Status line showing model name, current directory, git branch/status, and context usage bar.
Note: Requires manual setup (status lines use a different configuration mechanism).
Setup: Update ~/.claude/settings.json:
{
"statusLine": {
"type": "command",
"command": "php /path/to/claude-plugins/plugins/workspace-status/workspace-status.php",
"padding": 0
}
}
CODE_CONVENTIONS env var
Some plugins check for a CODE_CONVENTIONS environment variable pointing to a project-specific conventions file (e.g., patterns learned from past PR reviews). If set, the file is loaded before implementation work begins — helping avoid known anti-patterns and respect project-specific gotchas.
Setup: Add to your project's .claude/settings.json:
{
"env": {
"CODE_CONVENTIONS": "docs/review-conventions.md"
}
}
The file is plain markdown — no special format required. If the env var is unset, plugins behave as normal.
Supported by: pr-workflow, beads-workflow
🔧 Development
Clone the Repository
git clone https://github.com/jtsternberg/claude-plugins.git
cd claude-plugins
Install the Marketplace Locally
Claude Code:
claude plugin marketplace add /path/to/claude-plugins
Codex:
codex plugin marketplace add /path/to/claude-plugins
Install a Plugin from the Local Marketplace
Claude Code plugins:
claude plugin install <plugin-name>@jtsternberg
For Codex, choose a plugin that appears in the Codex-native catalog:
codex plugin add <plugin-name>@jtsternberg
Repository Structure
.claude-plugin/
└── marketplace.json # Claude Code catalog
.agents/plugins/
└── marketplace.json # Codex-native catalog
plugins/
└── <plugin-name>/ # Each plugin in its own directory
├── .claude-plugin/plugin.json # Claude/shared manifest
├── .codex-plugin/plugin.json # Codex-native manifest (when published)
├── skills/<skill>/SKILL.md
├── hooks/ # Hook scripts (optional)
└── README.md
For the current install commands, invocation conventions, and per-plugin
support boundary, see the compatibility guide.
Detailed probe logs and historical decisions are kept separately in the
Codex research archive. Maintainers shipping a plugin
change should use the dual-harness release guide.
Contributing
Contributions are welcome! To add a new plugin:
- Fork this repository
- Create a new directory under
plugins/
- Add its manifest and reusable workflows under
skills/<name>/SKILL.md
- Register it in the catalog for each harness it supports
- Validate every skill against the repository's dual-harness contract
- Update this README and the support matrix
- Submit a pull request
License
MIT License — see LICENSE for details.
Acknowledgments
Thanks to bvdr/claude-plugins for inspiration.
