Agent Toolkit

A collection of Claude Code plugins and GitHub Copilot CLI plugins/extensions for development workflows. Plugins are marketplace-installable; extensions can live in-repo or in the user's Copilot config.

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	Skills	Work session management — start, end, checkpoint, handoff, resume, issue, reset, orchestrate, plus a model-triggered summarize skill
image	Skills	Clipboard paste and screenshot capture for macOS, WSL, and Linux
markdown	Skills	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	Skill	Configurable status line for Claude Code — git status, model, context, API usage, cost segments with ANSI colors (Claude only)

Development

Plugin	Type	Description
agentic-ide	Skills + Agent	IDE-grade code intelligence — Serena (LSP symbol nav/refactor), ast-grep (AST search/rewrite), Semgrep (security & dataflow), plus a context-isolated explorer agent
git-tools	Skills	GitHub and Gitea tooling — unified CLI wrapper plus a ship orchestrator for the full branch/commit/push/PR/watch/cleanup lifecycle
java-toolkit	MCP + Skills	Java/JVM tooling — Maven Central intelligence, class search/decompilation (Docker Compose), plus a jar-explore skill for raw JAR content inspection
kb-capture	Skills	Research-to-document automation — capture findings as schema-valid markdown with frontmatter
session-history-analyzer	Skills	Analyze Claude Code session history for workflow patterns, friction hotspots, and automation candidates

Security

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

Gaming

Plugin	Type	Description
stl-game-config	Skills	Configure Steam games via SteamTinkerLaunch with automated system detection and template-based configuration

Copilot-only

Plugin	Type	Description
sf-code-review	Commands + Skill	Chunked cross-family code review orchestration for Copilot CLI — dual Sonnet 4.6 + GPT-5.4 review with targeted Opus 4.6 adjudication

Copilot extensions

Extension	Type	Description
git-worktree	User-level extension source	Native worktree tools for Copilot CLI — status, create, remove, and parallel-work suggestions

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.

This repo keeps the git-worktree extension source under copilot-extensions/git-worktree/ and does not auto-load it as a project extension.

To install or update the same extension for all repos:

curl -fsSL https://raw.githubusercontent.com/St0nefish/agent-toolkit/master/scripts/install-copilot-git-worktree.sh | bash

The installer also seeds Copilot's persisted tool approvals for the current repo so user:git-worktree and its sf_git_worktree_* tools stop prompting repeatedly. It also installs ~/.local/bin/copilot-git-worktree-allow so you can seed the same approvals later from any repo without cloning agent-toolkit.

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)
├── copilot-extensions/
│   └── git-worktree/             # Copilot CLI user-level extension source
├── plugins-claude/               # canonical plugin sources
│   ├── agentic-ide/
│   ├── convert-doc/
│   ├── elevated-edit/
│   ├── format-on-save/
│   ├── git-tools/
│   ├── image/
│   ├── java-toolkit/
│   ├── kb-capture/
│   ├── markdown/
│   ├── notify-on-stop/
│   ├── permission-manager/
│   ├── session/
│   ├── session-history-analyzer/
│   ├── statusline/
│   └── stl-game-config/
├── plugins-copilot/              # Copilot CLI variants
│   ├── <plugin>/commands/        # Copilot-only slash-command surface (real directory)
│   ├── <plugin>/hooks/           # Copilot-format hooks.json for hook plugins
│   └── <plugin>/<other-dirs>     # symlinked back to plugins-claude/<plugin>/...
├── scripts/
│   └── install-copilot-git-worktree.sh  # user-level install/update helper for the Copilot extension
└── utils/                        # shared scripts (vendored into plugin scripts/)

Plugin anatomy

plugins-claude/<name>/
├── .claude-plugin/
│   └── plugin.json               # name, version, description, author
├── skills/                       # all user/model-invocable surface — see invocation flags
│   └── <skill-name>/
│       └── SKILL.md              # skill definition with YAML frontmatter
├── hooks/
│   └── hooks.json                # hook event configuration
├── mcp.json                      # MCP server definitions
└── scripts/                      # helper scripts

Dual-Marketplace Approach

Both marketplaces list nearly all plugins. Copilot CLI entries point to plugins-copilot/ variants so hook-enabled plugins can use Copilot-format hooks.json, while shared directories (scripts/, skills/, etc.) are symlinked back to canonical plugins-claude/ sources. The commands/ directory only exists in plugins-copilot/ — Copilot CLI requires it for slash commands, while Claude uses skills with the disable-model-invocation: true frontmatter flag instead. User-level Copilot extensions can live under ~/.copilot/extensions/; this repo keeps their canonical source under copilot-extensions/.

A few surfaces are intentionally CLI-specific: statusline is Claude-only (no Copilot equivalent surface), sf-code-review is a Copilot-only plugin, and git-worktree is now a Copilot-only extension.

plugins-copilot/<name>/
├── .claude-plugin/
│   └── plugin.json               # copy of canonical plugin.json
├── hooks/
│   └── hooks.json                # Copilot CLI format (camelCase event keys, object map, version: 1)
└── scripts -> ../../plugins-claude/<name>/scripts

The Copilot marketplace (.github/plugin/marketplace.json) points to the -copilot variants for marketplace plugins only; git-worktree is intentionally extension-backed instead.

Cross-Compatibility Notes

Hook scripts normalize payload differences via utils/hook-compat.sh:

HOOK_INPUT=$(cat)
source "$(dirname "$0")/hook-compat.sh"
# Exports: HOOK_FORMAT, HOOK_TOOL_NAME, HOOK_COMMAND, HOOK_FILE_PATH, HOOK_EVENT_NAME
# hook_ask / hook_allow / hook_deny — output correct JSON per CLI

Difference	Claude Code	Copilot CLI
Plugin root var	${CLAUDE_PLUGIN_ROOT}	${COPILOT_PLUGIN_ROOT}
Hook event names	PascalCase (PreToolUse)	camelCase (preToolUse)
Hook format	Nested hooks array, command key	Object hooks map, bash key, version: 1
Payload keys	tool_name / tool_input	toolName / toolArgs

License

MIT