Extensibility
PluginSystem
Plexon comes loaded with fourteen curated plugins covering development workflows, office authoring, Google Workspace, Microsoft 365, GitHub, graph-aware code review, databases, browser testing, design-language extraction, AI search optimization, marketing, nutrition, and investing. All bundled in the binary. Install even more from GitHub, or build your own.
Browse via the Unified Marketplace
Plugins live alongside skills, agents, personas, and MCP servers in Plexon's unified Marketplace dialog. Open any panel's Storefront button, filter by Plugin in the kind chips, search, install in one click. Add your own marketplaces from the Sources tab. Any git repository with a marketplace.json at its root works. See the Marketplace feature page for the full story.
- 171-plugin official Anthropic registry seeded on first launch
- Open Claude Code marketplace.json format. Any compatible community marketplace works unchanged
- Search, filter by marketplace and category, install with one click
- Add and manage additional marketplaces from a dedicated dialog
Install Any Plugin in Seconds
Paste a GitHub URL and Plexon handles the rest. Your new skills, agents, and tools are detected, installed, and ready to use. No manual setup, no configuration files to edit. Extend your workspace with the growing ecosystem of community plugins, plus the fourteen curated plugins that ship inside the binary, covering engineering workflows, graph-aware code review, design-language extraction, marketing, dietitian, and investing toolkits.
- Fast installation with real-time progress tracking
- Automatic detection of skills, agents, hooks, and tool configurations
- Works with community plugins built for the broader ecosystem
- Fourteen bundled plugins ship inside the binary. Enable with one click, no download
Ready-to-Use Development Superpowers
Plexon ships with a powerful set of built-in plugins that transform how you work. Brainstorm ideas before writing code. Write tests first and let the AI build the implementation. Debug methodically instead of guessing. Review your work against your original plan. These are real workflows used by professional developers. Available from day one, no setup required.
- 14 pre-enabled skills covering brainstorming, planning, test-driven development, and code review
- Systematic debugging that finds root causes before suggesting fixes
- Git worktrees for safe, isolated feature work without disrupting your main branch
- Parallel agents that split independent tasks across multiple workers
- Verification checks that ensure tests pass before marking work as done
- A dedicated Code Reviewer agent that evaluates your work against your plans and standards
Office Work Without Leaving the Chat
Need a Word doc, a slide deck, an Excel workbook, or a PDF? Ask. Plexon generates them locally with Python, no Microsoft account required. Prefer cloud tools? Enable the Google Workspace plugin for Docs, Sheets, Slides, Gmail, Drive, and Calendar, or the Microsoft 365 plugin for Outlook, Excel, Word, PowerPoint, OneDrive, OneNote, and Teams. All four office plugins are bundled. One click to turn them on.
- office-authoring: create .docx, .pptx, .xlsx, and .pdf files locally via Python (python-docx, python-pptx, openpyxl, reportlab)
- google-workspace: Google Docs, Sheets, Slides, Gmail, Drive, Calendar through an OAuth-backed MCP server
- microsoft-365: Outlook, Excel, Word, PowerPoint, OneDrive, OneNote, Teams through Microsoft Graph
- document-toolkit: Pandoc conversion, PDF text extraction, and HTML slide decks via reveal.js or Marp
- Each bundled plugin includes a setup skill that walks you through credentials and dependencies
Programming Toolkits for Real Codebases
Four bundled plugins give you the tools professionals actually reach for. GitHub workflows from PR review to release notes, including a dedicated PR Reviewer subagent that checks correctness, design, tests, security, and performance against a fixed rubric. Graph-aware code review that builds a persistent Tree-sitter knowledge graph of your repo and surfaces only the slice a diff touches, roughly 8× fewer review tokens on typical codebases. Multi-database access with safe-editing patterns. And Playwright-powered browser testing with guidance on how to stop tests from being flaky.
- github-toolkit: PR review, conventional commits, release notes, issue triage, plus the official GitHub MCP server and a dedicated pr-reviewer subagent
- code-review-graph: persistent Tree-sitter knowledge graph of the repo, 22 MCP tools for blast-radius and impact analysis, and a review subagent that reads the slice a diff touches instead of whole files (roughly 8× fewer review tokens)
- database-toolkit: Postgres, MySQL, MariaDB, SQL Server, and SQLite through a single DSN via DBHub, plus migrations, tuning, and safe-editing skills
- web-testing: the official Microsoft Playwright MCP server with accessibility-tree snapshots (≈27k tokens vs ≈114k for screenshots), plus E2E patterns and test-stability guides
- Every plugin is disabled by default so you opt in to only what you need
Marketing Toolkit for Growth, Copy, and Analytics
A complete, self-contained kit for marketers. Write campaign briefs, rewrite copy with proven frameworks, size and analyze A/B tests with real statistical rigor, design full email sequences, critique landing pages, clean up UTM hygiene, plan multi-platform social calendars, and build research-grounded personas. Three expert agents (a growth strategist, a performance marketer, and a brand voice editor) handle the work a marketing team would normally outsource. Plug in the official Google Analytics MCP server to pull GA4 reports directly into the conversation.
- marketing-toolkit: 8 skills covering briefs, copywriting frameworks (AIDA/PAS/FAB/BAB/PASTOR/QUEST/4Ps/4U), A/B test analysis with correct statistical framing, lifecycle email design, landing-page critique, UTM taxonomy, social calendars, and persona building
- growth-strategist agent that builds prioritized ICE-scored experiment backlogs around your biggest funnel leaks
- performance-marketer agent that audits paid acquisition across Google Ads, Meta, LinkedIn, and TikTok with unit-economics-first reasoning
- brand-voice-editor agent that extracts a voice rubric from your best copy and surgically rewrites drift
- Official Google Analytics MCP server bundled for GA4 report access (optional, OAuth-based)
Nutrition Toolkit for Dietitians and Health Coaches
An end-to-end workflow for registered dietitians, nutrition coaches, and wellness practitioners. Calculate macros with Mifflin-St Jeor or Katch-McArdle, build multi-day meal plans that respect budget and cooking skill, run structured client intakes with red-flag screening, analyze recipes for per-serving macros, decode packaged-food labels, check meals against vegan/gluten-free/halal/low-FODMAP/keto patterns, screen supplement stacks for medication interactions, and track client progress across objective and subjective metrics. Every skill and agent carries an educational-not-medical-advice disclaimer and refers any medically complex case to a licensed professional. Two MCP servers bring real food databases into reach.
- nutrition-toolkit: 8 skills for macro calculation, meal planning, intake, recipe analysis, label reading, restriction matching, supplement screening, and progress tracking
- registered-dietitian, meal-plan-designer, and sports-nutrition-coach agents that operate under a strict scope-of-practice disclaimer
- OpenFoodFacts MCP server bundled: 300k+ products, barcode lookups, no API key
- USDA FoodData Central MCP server bundled: 600k+ foods with complete nutrient profiles (free USDA API key)
- Educational content only; not medical nutrition therapy. Clinical cases are referred to licensed practitioners
Stock Market Toolkit for Research and Learning
An educational investing toolkit for retail investors, research analysts, and trading hobbyists. Walk through full fundamental analysis, read 10-Ks and 10-Qs line by line, build DCF, comparables, and precedent-transaction valuations that are presented as ranges instead of false-precision price targets, structure earnings-call notes, audit portfolios across ten risk dimensions, interpret macroeconomic releases, write investment theses with explicit invalidation criteria, and learn options basics without being pushed into strategies you cannot risk-manage. Every skill and agent is educational, carries a not-financial-advice disclaimer, and explicitly refuses to issue buy/sell calls or price targets. Real market data flows in through two bundled MCP servers.
- stock-market-toolkit: 9 skills for fundamental analysis, financial statement reading, valuation modeling, technical patterns, earnings calls, portfolio risk, economic indicators, investment theses, and options basics
- equity-researcher, portfolio-analyst, and macro-strategist agents that produce structured research and refuse to issue trade recommendations
- Alpha Vantage MCP server bundled for real-time quotes, fundamentals, crypto, and FX (free tier)
- Financial Datasets MCP server bundled for historical income statements, balance sheets, cash flow statements, and market news
- Educational content only; nothing here is financial advice, and every generated artifact carries a disclaimer
Design Extract: Any URL to Design Tokens
Designers, design-system engineers, and frontend developers spend a surprising amount of time reverse-engineering a live site's design language. The design-extract plugin collapses that into one command. It crawls any public URL with headless Chromium, classifies regions and components, and emits 8 handoff artifacts (AI-readable markdown, a visual HTML preview, W3C DTCG tokens, a Tailwind config, a shadcn/ui theme, CSS variables, Figma Variables JSON, and a React theme object) plus WCAG accessibility scoring with remediation suggestions. A bundled MCP server then answers follow-up design questions from the extracted data without re-crawling, so a day's free-tier quota covers a day's worth of questions, not three.
- design-extract: bundled plugin wrapping Manavarya09/design-extract (MIT) and its designlang CLI + MCP server
- 8 artifacts per crawl: AI markdown, HTML preview, DTCG JSON, Tailwind config, shadcn theme, CSS variables, Figma Variables, React theme
- 5 MCP tools (search_tokens, find_nearest_color, get_region, get_component, list_failing_contrast_pairs) + 5 resources (primitive/semantic tokens, regions, components, CSS health)
- WCAG AA/AAA contrast scoring with palette-aware remediation suggestions on every extraction
- Auto-activated by the Designer persona; also installable standalone from Tools → Browse as the `designlang` MCP server
- Only requirement is Node 20+ on PATH. Chromium downloads once via Playwright, cached afterwards
GEO-SEO: Get Found by AI Search Engines
The world is searching with AI now: ChatGPT, Perplexity, Google AI Overviews, Gemini. Plexon includes a complete GEO (Generative Engine Optimization) plugin with 15 specialized skills and 5 expert agents, designed to make your website visible and quotable by AI-powered search. Run full audits, generate optimized markup, track your AI citability score, and deliver professional client reports, all from your workspace.
- Full GEO audits with composite scoring across AI discoverability, citability, and technical health
- AI citability analysis: understand how likely AI systems are to quote your content
- Automated llms.txt generation and schema markup auditing
- Platform-specific optimization for ChatGPT, Perplexity, Google AI Overviews, Gemini, and Bing Copilot
- Client-ready reports in Markdown and PDF, plus a prospect CRM for agencies
- Disabled by default. Enable only the GEO tools you need, when you need them
Mix and Match Components
Every plugin is a bundle of components (skills, agents, hooks, and tool configurations) that you can enable or disable individually. Installed components live alongside your own customizations without conflicts, and you manage everything through the familiar Skills, Agents, and Tools panels. Plugin-declared MCP servers are wired into your live config automatically on enable and cleaned up on disable.
- Skills for reusable instructions and workflows
- Agents with specialized roles and focused tool access
- Hooks that automate actions before or after tool use
- MCP server configurations imported and started on plugin enable, stopped and stripped on disable
Keep Everything Up to Date
Update any plugin with one click to pull the latest improvements from its source. Bundled plugins update automatically with each Plexon release. The embedded version is compared against what is on disk and the newer content wins. Need to remove a user-installed plugin? Uninstall cleanly with no leftover files or broken references.
- One-click updates from the original source for user-installed plugins
- Bundled plugins auto-update with each Plexon release via per-plugin version comparison
- Clean uninstall that removes every component a plugin installed
- Full component tracking so you always know what came from where
Want to Publish Your Own?
Plexon plugins are open and shareable. If you've built one and want to publish it for your team or the community, Marketplace Developer Mode walks through the layout, the manifest, and adding it to a marketplace.
- No proprietary format: plugins are folders in a Git repo you control
- Bundle a plugin alongside skills, agents, personas, and tools in one source
- Marketplace Developer Mode scaffolds the manifest and folders for you
Plugin Capabilities
Unified Marketplace
Plugins live alongside skills, agents, personas, and MCP servers in one Marketplace dialog. Filter by Plugin in the kind chips, search, install in one click. Add any git repository with a marketplace.json from the Sources tab. See the Marketplace feature page for details.
Fourteen Bundled Plugins
superpowers, GEO-SEO, office-authoring, google-workspace, microsoft-365, document-toolkit, github-toolkit, code-review-graph, database-toolkit, web-testing, design-extract, marketing-toolkit, nutrition-toolkit, and stock-market-toolkit, all shipped inside the binary.
Design Extract for Designers and Frontend Devs
Extract the full design language from any live URL (W3C DTCG tokens, typography, spacing, shadows, regions, component clusters) and get 8 ready-to-use handoff artifacts plus WCAG scoring. Bundled MCP server answers follow-up design questions without re-crawling. Auto-activated by the Designer persona.
Marketing Toolkit
8 skills plus growth-strategist, performance-marketer, and brand-voice-editor agents. Bundled Google Analytics MCP for GA4 reports. Covers campaigns, copy, A/B tests, email, landing pages, UTMs, social, and personas.
Nutrition Toolkit for Dietitians
8 skills plus registered-dietitian, meal-plan-designer, and sports-nutrition-coach agents. OpenFoodFacts and USDA FoodData Central MCP servers bundled. Educational content only; clinical cases are referred to licensed professionals.
Stock Market Toolkit
9 educational skills plus equity-researcher, portfolio-analyst, and macro-strategist agents. Alpha Vantage and Financial Datasets MCP servers bundled. Not financial advice. Every artifact carries a disclaimer and no buy/sell calls are issued.
Office Authoring Without Cloud Accounts
Create Word, PowerPoint, Excel, and PDF files locally via Python. No Microsoft account, no Google account, no upload.
Google Workspace & Microsoft 365
Optional cloud office integration through OAuth-backed MCP servers for Docs, Sheets, Slides, Gmail, Drive, Calendar, Outlook, Excel, Word, PowerPoint, OneDrive, and Teams.
GitHub Workflows
The github-toolkit plugin ships the official GitHub MCP server, a pr-reviewer subagent, and skills for PR review, conventional commits, release notes, and issue triage.
Multi-Database Access
One DSN, five databases. Postgres, MySQL, MariaDB, SQL Server, and SQLite through DBHub, with skills for zero-downtime migrations, Postgres tuning, and safe editing patterns.
Browser Testing & AI Search Optimization
The web-testing plugin adds Playwright MCP plus E2E patterns and flakiness-debugging skills. The GEO-SEO plugin helps you rank in ChatGPT, Perplexity, and Google AI Overviews.
Community Ecosystem
Install community-built plugins from GitHub without modification. Compatible with the broader Claude Code plugin ecosystem.
Component Tracking
Every installed component is tracked by its parent plugin. Disabling a plugin stops and strips its MCP servers; uninstalling removes every file.
Automatic Updates
Bundled plugins update with each Plexon release via per-plugin version comparison. User-installed plugins update with one click from the source repository.
One-Click Install from GitHub
Paste a GitHub URL and your new plugin is installed automatically. Skills, agents, hooks, and MCP server configs wired into your workspace.