---
name: check-tools
description: Validates development tool installations across Python, Node.js, Java, Go, Rust, C/C++, Git, and system utilities. Use when verifying environments or troubleshooting dependencies.
metadata:
  version: 1.2.0
---

# Check Tools - Development Environment Validator

Reports which development tools are installed and at what version, grouped by
ecosystem. Default behavior reports every tool without failing validation —
suited to diverse PaaS/container environments where only a subset of
ecosystems is expected to be present.

## When to use

- Verifying a container or environment has the tools a task needs
- Troubleshooting a build failure that might be a missing dependency
- Documenting system requirements
- Onboarding: confirming a dev environment is ready

## Running it

```bash
# Fast check with exit code (0 = all required core tools present)
bash assets/check-tools.sh

# Development tools only
bash assets/environment-diagnostic.sh tools

# System info: hardware, mounts, processes
bash assets/environment-diagnostic.sh system

# Complete diagnostic (tools + system + package inventories), written to a file
bash assets/environment-diagnostic.sh full /path/to/report.txt
```

`check-tools.sh` exits non-zero only when a **required** core tool (python3,
pip, node, npm, java, gcc, git, curl, awk, grep, gzip, tar, make, sed) is
missing. Every other tool is reported (✅ found / ⚠️ optional and missing) but
does not fail the run.

## Required vs. optional, by ecosystem

| Ecosystem | Required | Optional |
|-----------|----------|----------|
| Python    | python3, pip | python, uv, poetry, black, mypy, pytest, ruff |
| Node.js   | node, npm | nvm, yarn, pnpm, eslint, prettier, chromedriver |
| Java      | java | mvn, gradle |
| Go        | — | go |
| Rust      | — | rustc, cargo |
| C/C++     | gcc | clang, cmake, ninja, conan |
| Utilities | git, curl, awk, sed, grep, gzip, tar, make | jq, rg, tmux, yq, vim, nano |

Full per-tool version-check commands and installation notes live in
`references/tool-categories.md`.

## Files

- `assets/check-tools.sh` — fast validation script (exit codes, quick checks)
- `assets/environment-diagnostic.sh` — comprehensive diagnostic with
  `tools` / `system` / `full` modes
- `references/tool-categories.md` — detailed per-tool breakdown and
  installation instructions

## Extending

The required/optional split lives in `assets/check-tools.sh`
(`check_required_tool` / `check_optional_tool` calls), not in this file — to
change which tools are required, edit the script.


---
Source attribution: oaustegard
Original project: https://github.com/oaustegard/claude-skills/blob/2c9224e4bacd27e6f1094b3f4656e6ea4024dc06/check-tools/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Dave AI.

## Upstream license notice

MIT License

Copyright (c) 2025 Oskar Austegard

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Dave AI resource metadata

Creator / publisher: oaustegard
Original project: https://github.com/oaustegard/claude-skills/blob/2c9224e4bacd27e6f1094b3f4656e6ea4024dc06/check-tools/SKILL.md
Attribution basis: Recovered original package and original project license at a pinned revision

Fields of work: Development & Engineering, Customer Support
Roles: Backend Developer, Data Engineer, DevOps / SRE, QA / Test Engineer, Technical Support
Specialties: Backend, Cross Platform, DevOps
Tools: Tool not specified
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: eecfb2c74b9a36524c7570620fa6f0d69e2e057d195f59d4eda2afb2dd76d8c2
Metadata reviewed: 2026-10-27
This metadata supersedes earlier Dave AI catalog attribution. Original instruction and supporting files are preserved.