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Myfirsttool

  • Updated May 28, 2026
  • Alv-no/claudecodeMarketplaceAlv

myfirsttool is a Claude Code skill in the AI & Agent Building category. All-in-one Claude Code plugin

Key points

  • myfirsttool
  • AI & Agent Building
  • AI-coding skill

Myfirsttool by the numbers

  • Data as of Jul 7, 2026 (Skillselion catalog sync)
/plugin marketplace add Alv-no/claudecodeMarketplaceAlv
/plugin install myfirsttool@alvmarketplace

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Listed on Skillselion
Last updatedMay 28, 2026
RepositoryAlv-no/claudecodeMarketplaceAlv

What it does

All-in-one Claude Code plugin

README.md

myfirsttool — Claude Code Plugin

All-in-one Claude Code plugin providing file protection, auto-linting, audit logging, desktop notifications, and a deploy-readiness checker.

Features

Hooks

Hook Event Description
pre-write-lint.sh PreToolUse (Write/Edit) Blocks writes to lockfiles, .env, CI configs, and Dockerfiles
post-write-lint.sh PostToolUse (Write/Edit) Auto-formats files using the appropriate tool (prettier, eslint, ruff, rustfmt, gofmt, etc.)
audit-logger.sh PostToolUse (Bash) Logs every bash command as JSONL; flags suspicious commands to alerts log
notify-done.sh Stop / Notification / SubagentStop Plays a sound and sends a desktop notification when Claude finishes

Skills

Skill Command Description
deploy-check /deploy-check Pre-deployment checklist: tests, diffs, secrets, debug statements, TODOs, changelog

Installation

Install via the ALV marketplace from inside Claude Code:

/plugin marketplace add https://github.com/Alv-no/claudecodeMarketplaceAlv.git
/plugin install myfirsttool@alvmarketplace

Required dependencies (install those you need)

  • jq — required for all hooks (JSON parsing)
  • prettier / eslint — JS/TS formatting (prefers project-local node_modules/.bin/)
  • ruff or black + isort — Python formatting
  • rustfmt — Rust formatting
  • gofmt + goimports — Go formatting
  • notify-send (Linux) or terminal-notifier (macOS) — desktop notifications

File Structure

myfirsttool/
├── .claude-plugin/
│   └── plugin.json          # Plugin manifest
├── hooks/
│   ├── hooks.json           # Hook definitions
│   ├── pre-write-lint.sh    # Block writes to protected files
│   ├── post-write-lint.sh   # Auto-format after writes
│   ├── audit-logger.sh      # Log all bash commands
│   └── notify-done.sh       # Sound + desktop notification
├── skills/
│   └── deploy-check/
│       └── SKILL.md         # Deployment checklist skill
├── sounds/                  # Custom sound files (optional)
│   └── (place .wav files here: stop.wav, notification.wav, subagent.wav)
├── logs/                    # Auto-generated logs
│   ├── audit.jsonl          # All bash command log
│   ├── alerts.jsonl         # Suspicious command alerts
│   └── lint.log             # Linting activity log
└── README.md

Custom Sounds

Place .wav files in the sounds/ directory to override system sounds:

  • stop.wav — played when Claude finishes a task
  • notification.wav — played for notifications
  • subagent.wav — played when a subagent completes

If these files are missing, the plugin falls back to OS system sounds:

  • macOS: Hero.aiff, Glass.aiff, Ping.aiff
  • Linux: freedesktop sound theme
  • Windows: System sounds (Asterisk, Exclamation, Hand)

Logs

All logs are written to the logs/ directory:

  • audit.jsonl — every bash command with timestamp, session ID, and working directory
  • alerts.jsonl — flagged suspicious commands (rm -rf /, curl|bash, chmod 777, etc.)
  • lint.log — all auto-formatting activity

Configuration

The plugin uses these environment variables (all set automatically by Claude Code):

  • CLAUDE_PLUGIN_ROOT — plugin install directory (used by hook commands and scripts)
  • CLAUDE_PROJECT_DIR — the user's project root
  • CLAUDE_SESSION_ID — current session ID

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