Skip to content
Agentmart
Submit a tool

developer-toolbox

Essential development workflow agents for code review, debugging, testing, documentation, and git operations.

Skill by Jezweb

IndexedMIT★ 2
Write a review

Install

Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/fefogarcia-developer-toolbox

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

Get the weekly diff

The weekly diff: one email a week with new agent tools, notable updates and grade changes, plus security alerts for tools you follow. Double opt-in, one-click unsubscribe.

We use your email only for this newsletter. Privacy

About

Essential development workflow agents for code review, debugging, testing, documentation, and git operations. Includes 7 specialized agents with strong auto-discovery triggers. Use when: setting up development workflows, code reviews, debugging errors, writing tests, generating documentation, creating commits, or verifying builds.

Use cases: testing, writing, productivity

No reviews yet. Installed it? Reviews come from verified installers only. How reviews work

Permissions

What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

Tools
No tools found
Secrets
None asked for
Install scripts
None found

Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/developer-toolbox

What's inside

Skill name
developer-toolbox
Description
Essential development workflow agents for code review, debugging, testing, documentation, and git operations. Includes 7 specialized agents with strong auto-discovery triggers. Use when: setting up development workflows, code reviews, debugging errors, writing tests, generating documentation, creating commits, or verifying builds.
License
MIT
Metadata
author: Jezweb · version: 1.0.0 · last_verified: 2025-01-20
Instructions
134 lines in SKILL.md · view on GitHub

Files (10)

  • plugin.json · .claude-plugin/
  • SKILL.md
  • build-verifier.md · agents/
  • code-reviewer.md · agents/
  • commit-helper.md · agents/
  • debugger.md · agents/
  • documentation-expert.md · agents/
  • orchestrator.md · agents/
  • test-runner.md · agents/
  • agent-first-thinking.md · rules/

SKILL.md (first lines)

# Developer Toolbox

A collection of essential development workflow agents that integrate seamlessly with Claude Code.

## What's Included

### Agents (7)

| Agent | Purpose | Triggers On |
|-------|---------|-------------|
| **commit-helper** | Generate conventional commit messages | "commit message", "staged changes" |
| **build-verifier** | Verify dist/ matches source after builds | "changes not appearing", "verify build" |
| **code-reviewer** | Security audits and code quality reviews | "code review", "security audit", "OWASP" |
| **debugger** | Systematic debugging with root cause analysis | "error", "TypeError", "stack trace", "bug" |
| **test-runner** | TDD workflow and test creation | "write tests", "TDD", "coverage", "jest" |
| **orchestrator** | Coordinate complex multi-step projects | "coordinate", "multi-step", "complex feature" |
| **documentation-expert** | README, API docs, architecture diagrams | "document", "README", "API docs" |

### Rules (1)

| Rule | Purpose |
|------|---------|
| **agent-first-thinking** | Behavioral interrupt - consider agents before manual work |

## Installation

```bash
# Via marketplace
/plugin install developer-toolbox

# Or local development
/plugin install ./skills/developer-toolbox
```

After installation, restart Claude Code to load the agents.

## Usage Examples

### Commit Helper
```
"Help me write a commit message for these staged changes"
```

### Build Verifier
```
"My changes aren't appearing in production, verify the build output"
```

### Code Reviewer
```
"Review this authentication code for security vulnerabilities"
```

### Debugger
```
"I'm getting TypeError: Cannot read property 'map' of undefined"
```

### Test Runner
```
"Use TDD to implement this user validation function"
```

### Orchestrator
```
"Coordinate a refactor of the authentication system across 5 services"
```

### Documentation Expert
```
"Create comprehensive API documentation for this REST endpoint"
```

## Agent Design Philosophy

All agents follow the **"MUST BE USED when"** pattern for reliable auto-discovery:

```yaml
description: |
  [Role] specialist. MUST BE USED when: [trigger 1], [trigger 2], [trigger 3].
  Use PROACTIVELY for [broad task category].

  Keywords: keyword1, keyword2, error-message-fragment
```

This ensures Claude Code discovers and proposes the right agent automatically based on user requests.

## Agent-First Thinking Rule

The included `agent-first-thinking.md` rule encourages using agents by default:

**The Inversion:**
- Wrong: "I'll do this manually unless it's big enough for agents"
- Right: "I'll use agents unless there's a reason not to"

**Triggers:**
| If about to... | Use instead... |
|----------------|----------------|
| grep/glob 3+ times | Explore agent |
| Read 5+ files | Explore agent |
| Same edit across files | Parallel agents |
| Audit multiple items | Parallel swarm |

## Customization

Each agent can be extended by editing its markdown file after installation:

```bash
# Find installed agents
ls ~/.claude/plugins/cache/*/developer-toolbox/*/agents/

# Or copy to user-level for customization
cp [plugin-path]/agents/code-reviewer.md ~/.claude/agents/
```

## Combining Agents

Agents work well together:

From fefogarcia/approved-skills, MIT.

More from fefogarcia/approved-skills

Signals

Stars
2
Forks
0
Open issues
0
Last commit (this folder)
Feb 10, 2026 (8 months ago)

From GitHub (fetched Oct 24, 2026).

Details

Version
1.0.0
License
MIT
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Cite this page

developer-toolbox skill. Agent Mart. https://agentmart.dev/skills/fefogarcia-developer-toolbox (last updated 2026-10-24)