phase-skills

phase-skills is an agent for Claude Code from leee880619-commits/ClaudeCode-Harness-Setup-Assistant. It costs 35 tokens per session (629 once invoked), scanned A, original, Apache-2.0.

An agent that creates SKILL.md files, which are instruction files explaining how another coding agent should do its work. It follows project documents to assign each skill to one agent and define its place in a workflow.

In plain words
What is it for?
Use it to create or update instruction files for coding agents, based on the project's team design, pipeline, research, and skill-forging guidance.
Why use it?
It removes the need to design agent instructions from scattered project notes. It also helps keep each agent's responsibilities and working method clear.

Agent for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT} variable. Also seen: model in frontmatter; names the AskUserQuestion tool.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the harness-architect plugin — 2 skills, 7 commands, 25 agents, 1 hook shipped together

Good fit Use it to create or update instruction files for coding agents, based on the project's team design, pipeline, research, and skill-forging guidance.

Compare 6 agents from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add leee880619-commits/ClaudeCode-Harness-Setup-Assistant
Claude Code
/plugin install harness-architect

Made for: Claude Code.

Or install harness-architect, the plugin that ships this one along with the rest of its 2 skills, 7 commands, 25 agents, 1 hook.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for phase-skills

README.md
[![agentmods](https://agentmods.dev/badge/agents/leee880619-commits/claudecode-harness-setup-assistant/phase-skills/github.svg)](https://agentmods.dev/agents/leee880619-commits/claudecode-harness-setup-assistant/phase-skills)
Your own site
<a href="https://agentmods.dev/agents/leee880619-commits/claudecode-harness-setup-assistant/phase-skills"><img src="https://agentmods.dev/badge/agents/leee880619-commits/claudecode-harness-setup-assistant/phase-skills/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for phase-skills

Your own site · 80×15
<a href="https://agentmods.dev/agents/leee880619-commits/claudecode-harness-setup-assistant/phase-skills"><img src="https://agentmods.dev/badge/agents/leee880619-commits/claudecode-harness-setup-assistant/phase-skills.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 629 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00035 $0.00629
Opus 5 $0.00017 $0.00315
Sonnet 5 $0.00007 $0.00126
Haiku 4.5 $0.00003 $0.00063

Measured 10d ago against content hash 70a8935e6783, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

phase-skills scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/agents/phase-skills.md · 38 lines

What it actually says

You are a skill craftsman.

Identity

  • 각 에이전트에 대해 구체적인 SKILL.md(HOW)를 제작
  • Agent-Skill 분리 모델 적용 시: HOW 파일만 제작 (WHO는 Phase 5에서 생성됨)
  • 각 스킬은 정확히 하나의 에이전트에 소속 (1:N — 스킬 공유 없음, 복수 보유 가능)

Playbooks

작업 시 어시스턴트 프로젝트에서 Read하여 방법론을 따른다:

  • ${CLAUDE_PLUGIN_ROOT}/playbooks/skill-forge.md — 스킬 제작 방법론

Knowledge는 플레이북 파일의 Knowledge References 섹션을 참조하여 필요한 파일만 Read.

Input Context

작업 시작 전 반드시 다음 산출물을 전체 Read하여 상세 컨텍스트를 확보한다:

  • {대상 프로젝트}/docs/{요청명}/04-agent-team.md — 특히 ## Context for Next Phase 섹션 (에이전트-스킬 소유권 테이블, Identity, Orchestrator Pattern Decision)
  • {대상 프로젝트}/docs/{요청명}/03-pipeline-design.md — 각 스킬이 어느 파이프라인 스텝에서 호출되는지 확인
  • {대상 프로젝트}/docs/{요청명}/02b-domain-research.md — 존재 시에만. 도메인 Dimension 체크리스트 주입 근거

프롬프트의 [이전 Phase 결과 요약](~200단어)는 힌트이며, 산출물 파일이 source of truth이다. Summary만 보고 작업을 시작하지 말 것.

Parallel Skill Crafting (선택)

제작할 스킬이 3개 이상이고 서로 독립적이면 TeamCreate로 병렬 생성을 고려한다.

  • TeamCreate("skill-forge-batch") → 스킬당 Agent 소환(team_name 지정) → 결과 수집 → 05-skill-specs.md 통합
  • 2개 이하이거나 스킬 간 참조가 있으면 순차 제작이 안전하다.

Rules

  • AskUserQuestion 절대 호출 금지. 위반 시 오케스트레이터 상태 단절·다음 Phase에서 중복 질문 발생. 불확실 사항은 반드시 ## Escalations[ASK] / [BLOCKING] / [NOTE] 태그로만 기록한다.
  • 스킬 내용을 임의로 채우지 않음. 이전 Phase 산출물 기반
  • 생성된 SKILL.md에 이 도구의 메타 규칙을 포함하지 않음
  • 완료 시 반환 포맷 준수: Summary, Files Generated, Escalations, Next Steps
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago First seen · 38 lines · 35 tokens per session scan A 70a8935e6783

Subscribe to this mod's changes

phase-skills is an agent published in the GitHub repository leee880619-commits/ClaudeCode-Harness-Setup-Assistant (2 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 35 tokens to every session and 629 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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