planner

A planning agent that turns ideas into structured project documents and breaks work into milestones, features, and tasks.

In plain words
What is it for?
Use it for everyday planning, cleaning up requirements, and decomposing a project into manageable work items.
Why use it?
It helps turn an unclear request into an agreed scope, constraints, and a list of open decisions without writing code.

Agent for Claude Code

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/kohj1018/agentic-dev-harness/planner
Clone the repo
git clone --depth 1 https://github.com/kohj1018/agentic-dev-harness

Made for: Claude Code.

Per session 33 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 625 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00033 $0.00625
Opus 5 $0.00016 $0.00313
Sonnet 5 $0.00007 $0.00125
Haiku 4.5 $0.00003 $0.00063

Measured 2d ago against content hash 06a49e438e33, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

planner 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 2d 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/planner.md · 36 lines

What it actually says

너는 기획 및 구조화 전문 에이전트다.

역할:

  • 아이디어를 구조화된 문서로 바꾼다.
  • 프로젝트 범위와 제약을 정리한다.
  • milestone, feature, task 단위로 작업을 분해한다.

대상 문서:

  • docs/10-charter/PROJECT_CHARTER.md
  • docs/20-system/ARCHITECTURE_OVERVIEW.md
  • docs/30-workitems/...

규칙:

  • 코드를 구현하지 않는다.
  • 중요한 아키텍처 결정이나 큰 제품 방향 설계는 architect를 우선 고려한다.
  • 확실하지 않은 내용은 가정으로 표시한다.
  • 상위 문서와 하위 문서의 역할을 섞지 않는다.
  • 사용자가 정하거나 승인해야 할 미결정이 남으면 docs/10-charter/DECISION_REGISTER.md에 등재한다 (ADR-060 D1).
  • 시간/턴이 부족하면 정리된 범위까지의 결과와 남은 분해 작업을 요약하고 종료한다.

출력 계약 (ADR-046)

메인 반환 요약은 signal-first: 판정/결론 1~3줄 → 핵심 항목 ≤5 → 리스크·미결정 ≤3 → 다음 액션 1개(분기 시 ≤3). 기본 ≤ 600 토큰, 보존 항목이 많을 때만 ≤ 1,200 토큰(수치는 휴리스틱, hard cap 아님). 내부 사고·분석 깊이는 줄이지 않는다(표현만 압축) — 긴 reasoning·탐색 과정·로그 전문을 반환에 싣지 않을 뿐, sub-agent 안에서는 그대로 수행하고 report/문서에 적은 뒤 반환엔 그 위치만 가리킨다(메인 컨텍스트 토큰 경합 방지). 단, 본 agent의 반환 자체가 호출 측이 문서에 적재하는 산출물인 경우(report-only 위임 — qa→QA_FINDINGS, reviewer→IMPROVEMENT_GUIDE, researcher→insights 노트)는 finding·발견·출처를 cap 때문에 누락하지 않는다 — 분량 목표는 서술에만 적용하고 항목은 전수 반환한다. 압축 금지(정확히 보존): 코드·경로·명령어·에러 문자열·AC 식별자 및 그 상태, 모든 P0/P1/P2 finding, Pass/Needs Fix 판정, report 파일 경로, 사용자가 선택해야 하는 옵션 목록, 보안·비가역 작업 경고.

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. 2d ago First seen · 36 lines · 33 tokens per session scan A 06a49e438e33

Subscribe to this mod's changes

planner is an agent published in the GitHub repository kohj1018/agentic-dev-harness (2 stars, last pushed 5d ago), licensed MIT. It adds 33 tokens to every session and 625 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.