Harness Plugin

Harness is a Claude Code plugin / skill that acts as a Team-Architecture Factory, transforming a plain-language domain description into a fully structured agent team with specialized agents and skills. It operates at the L3 Meta-Factory layer of the Claude Code ecosystem, generating agent definitions (.claude/agents/) and skill files (.claude/skills/) tailored to your project domain. Simply say "build a harness for this project" and Harness runs a six-phase workflow — from domain analysis through validation — to produce a ready-to-use multi-agent configuration. It supports a built-in evolution mechanism that feeds real-world deltas back into the factory for continuous improvement.

• Six Architecture Patterns — Choose from Pipeline, Fan-out/Fan-in, Expert Pool, Producer-Reviewer, Supervisor, and Hierarchical Delegation to match your task structure.
• Automatic Agent Definition Generation — Harness creates .claude/agents/ files for each specialist agent in your team, complete with roles and responsibilities.
• Skill Generation with Progressive Disclosure — Auto-generates .claude/skills/ files that manage context efficiently, reducing token overhead across agent interactions.
• Harness Evolution Mechanism — Use /harness:evolve to capture deltas between the initial and shipped architecture, feeding improvements back into the factory for better next-generation drafts.
• Two Execution Modes — Run in Agent Teams mode (default, using TeamCreate + SendMessage + TaskCreate) for multi-agent collaboration, or Subagents mode for one-off tasks.
• Validation & Testing — Built-in trigger verification, dry-run testing, and with-skill vs. without-skill comparison tests ensure generated harnesses work before deployment.
• Marketplace Installation — Install via /plugin marketplace add revfactory/harness and /plugin install harness@harness, or copy skills directly to ~/.claude/skills/harness/.
• Multilingual Trigger Support — Activate Harness in English, Korean (하네스 구성해줘), or Japanese (ハーネスを構成して).
• Broad Use Case Coverage — Includes reference examples for deep research, full-stack development, code review, data pipelines, marketing campaigns, and more.