format-on-save

Agent Toolkit

A collection of Claude Code and GitHub Copilot CLI plugins for development workflows. Each plugin is independently installable from the marketplace.

Plugin Catalogue

Productivity

Plugin	Type	Description
format-on-save	Hook	Auto-formats files after Edit/Write using language-appropriate formatters (shfmt, prettier, markdownlint, google-java-format, ktlint, rustfmt, ruff)
notify-on-stop	Hook	Desktop notification when Claude finishes a long-running task (configurable threshold)
session	Command + Skills	Work session management — start, end, checkpoint, status, catchup, handoff, resume
image	Skills	Clipboard paste and screenshot capture for macOS, WSL, and Linux
markdown	Command	Markdown linting and formatting — check, format, setup
convert-doc	Skill	Convert documents to/from markdown using pandoc (DOCX, HTML, RST, EPUB, ODT, RTF, LaTeX)
elevated-edit	Skill	Pull/edit/push workflow for remote or privileged files — bridges SSH and sudo boundaries using rsync
statusline	Command	Configurable status line for Claude Code — git status, model, context, API usage, cost segments with ANSI colors

Development

Plugin	Type	Description
git-cli	Skill	GitHub and Gitea CLI wrapper — issues, pull requests, CI runs, with auto-detected platform
frontmatter-query	Skill	Query YAML frontmatter across markdown files — list, search, and count metadata
jar-explore	Skill	List, search, and read files inside JARs without extraction
maven-indexer	MCP + Command	Class search and decompilation in Gradle/Maven caches (Docker Compose)
maven-tools	MCP + Command	Maven Central intelligence — version lookup, dependency analysis (Docker Compose)
kb-capture	Command + Skill	Research-to-document automation — capture findings as schema-valid markdown with frontmatter
session-history-analyzer	Command + Skill	Analyze Claude Code session history for workflow patterns, friction hotspots, and automation candidates

Security

Plugin	Type	Description
permission-manager	Hook + Command	Bash command gating with shfmt-based compound parsing, extensible custom patterns, and WebFetch domain management

Installation

Claude Code

claude plugin install <owner/repo>/plugin-name

Example:

claude plugin install St0nefish/agent-toolkit/format-on-save
claude plugin install St0nefish/agent-toolkit/permission-manager

GitHub Copilot CLI

copilot plugin install <owner/repo>/plugin-name

Hook plugins have a Copilot-specific variant; all others work identically on both CLIs.

Local development

claude --plugin-dir ./plugins-claude/format-on-save
claude --plugin-dir ./plugins-claude/permission-manager

Repository Structure

agent-toolkit/
├── .claude-plugin/
│   └── marketplace.json          # Claude Code marketplace catalog
├── .github/plugin/
│   └── marketplace.json          # Copilot CLI marketplace catalog (hook variants)
├── plugins-claude/               # canonical plugin sources
│   ├── format-on-save/
│   ├── notify-on-stop/
│   ├── session/
│   ├── git-cli/
│   ├── image/
│   ├── markdown/
│   ├── convert-doc/
│   ├── frontmatter-query/
│   ├── jar-explore/
│   ├── maven-indexer/
│   ├── maven-tools/
│   ├── permission-manager/
│   ├── elevated-edit/
│   └── statusline/
├── plugins-copilot/              # Copilot CLI variants (all plugins)
│   ├── format-on-save/           # Copilot-format hooks.json + shared symlinks
│   ├── permission-manager/       # Copilot-format hooks.json + shared symlinks
│   └── <other-plugins>/          # mirrored plugin variants (mostly symlinked)
└── utils/                        # shared scripts (symlinked into plugin scripts/)

Plugin anatomy