Claude Code Plugin

# Build Agent Teams
That Actually Work

Harness is a meta-skill that designs domain-specific agent teams, defines specialized agents, and generates the skills they use — all from a single prompt.

Get Started
GitHub
0
Quality Improvement
0
Win Rate (15/15 tasks)
0
Generated Files in Harness 100
0
Architecture Patterns

## Everything You Need to
Orchestrate Agent Teams

From domain analysis to validation, Harness automates the entire lifecycle of building multi-agent systems.

⚙

### Agent Team Design

6 battle-tested patterns — Pipeline, Fan-out/Fan-in, Expert Pool, Producer-Reviewer, Supervisor, and Hierarchical Delegation.

★

### Skill Generation

Auto-generates skills with Progressive Disclosure, keeping context lean and loading details only when needed.

⇄

### Orchestration

Message-based, task-based, and file-based data passing between agents with built-in error handling and fallback strategies.

✓

### Validation

Trigger verification, dry-run testing, and with-skill vs without-skill A/B comparison tests to prove quality gains.

## Try These Prompts

Copy any prompt into Claude Code after installing Harness. Click to expand.

🔎

### Deep Research

Multi-agent investigation teams

Fan-out/Fan-in
Build a harness for deep research. I need an agent team that can investigate any topic from multiple angles — web search, academic sources, community sentiment — then cross-validate findings and produce a comprehensive report.Click to copy
🌐

### Website Development

Full-stack build pipeline

Pipeline
Build a harness for full-stack website development. The team should handle design, frontend (React/Next.js), backend (API), and QA testing in a coordinated pipeline from wireframe to deployment.Click to copy
🎨

### Webtoon Production

Creative team for episodic content

Producer-Reviewer
Build a harness for webtoon episode production. I need agents for story writing, character design prompts, panel layout planning, and dialogue editing. They should review each other's work for style consistency.Click to copy
🎥

### YouTube Content

End-to-end video planning

Supervisor
Build a harness for YouTube content creation. The team should research trending topics, write scripts, optimize titles/tags for SEO, and plan thumbnail concepts — all coordinated by a supervisor agent.Click to copy
🔍

### Code Review

Parallel multi-dimension audit

Fan-out/Fan-in
Build a harness for comprehensive code review. I want parallel agents checking architecture, security vulnerabilities, performance bottlenecks, and code style — then merging all findings into a single report.Click to copy
📚

### Technical Docs

Docs from codebase analysis

Pipeline
Build a harness that generates API documentation from this codebase. Agents should analyze endpoints, write descriptions, generate usage examples, and review for completeness.Click to copy
📊

### Data Pipelines

End-to-end data workflows

Hierarchical Delegation
Build a harness for designing data pipelines. I need agents for schema design, ETL logic, data validation rules, and monitoring setup that delegate sub-tasks hierarchically.Click to copy
🚀

### Marketing Campaign

Campaign asset creation & testing

Producer-Reviewer
Build a harness for marketing campaign creation. The team should research the target market, write ad copy, design visual concepts, and set up A/B test plans with iterative quality review.Click to copy

## 6-Phase Workflow

Say “build a harness” and Harness runs a structured 6-phase pipeline to produce production-ready agent teams.

01

### Domain Analysis

Analyze your codebase, identify task types, detect user expertise, and prevent conflicts with existing agents.

02

### Team Architecture Design

Choose between Agent Teams and Subagents, select from 6 architectural patterns, and define agent separation criteria.

03

### Agent Definition Generation

Generate `.claude/agents/*.md` files with roles, principles, I/O protocols, and team communication contracts.

04

### Skill Generation

Create skills with YAML frontmatter, pushy trigger descriptions, and Progressive Disclosure (metadata → body → references).

05

### Integration & Orchestration

Wire agents together with orchestrator skills, data-passing protocols, error handling, and team size guidelines.

06

### Validation & Testing

Structure checks, trigger verification, dry-run tests, with/without-skill comparison, and iterative refinement.

## 6 Architecture Patterns

Pick the right coordination strategy for your workload. Click a pattern to learn more.

→

### Pipeline

Sequential dependent tasks

✧

### Fan-out / Fan-in

Parallel independent tasks

♠

### Expert Pool

Context-dependent selection

⇋

### Producer-Reviewer

Generate then verify

◆

### Supervisor

Central dynamic dispatch

△

### Hierarchical Delegation

Top-down recursive split

### Pipeline

Each agent's output feeds directly into the next. Ideal for workflows where steps are strictly ordered — code generation → review → testing → deployment. Simple to reason about, but the chain is only as fast as the slowest link.

## Proven by Research

A controlled A/B experiment across 15 software engineering tasks at 3 difficulty levels.

Basic
55.4
79.2
Advanced
49.0
78.6
Expert
44.0
80.2
Without Harness With Harness
+60%
Average quality improvement

100% win rate across all 15 test cases

32% less variance — more consistent, predictable output

Scales with complexity — the harder the task, the bigger the gain

Read the Paper →

## 100 Ready-Made Harnesses

Production-ready agent teams across 10 domains. 200 packages (EN + KO). 1,808 files. All generated by this plugin.

Content Creation
Software Dev
Data & AI/ML
Business Strategy
Education
Legal & Compliance
Health & Lifestyle
Communication
Operations
Specialized Domains
Explore Harness 100 →

## Get Started in Seconds

Two commands. That’s it.

1Add the marketplace
> /plugin marketplace add revfactory/harness
2Install the plugin
> /plugin install harness@harness

Then just say: “Build a harness for this project”