hitl

hitl is a skill for Claude Code from kimsanguine/hplan. It costs 58 tokens per session (3,718 once invoked), scanned A, original, MIT.

A human-in-the-loop design skill for deciding where people must review or approve an agent's work. Human-in-the-loop means people remain involved at defined points instead of letting the agent act alone.

In plain words
What is it for?
Use it to set automation levels, approval gates, confidence thresholds, audits, escalation rules, and trial modes for consequential workflows.
Why use it?
It prevents risky actions from being fully automatic when mistakes could cause financial, legal, customer, or reputation damage.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: model in frontmatter.

Part of the discover plugin — 6 skills shipped together

Good fit Use it to set automation levels, approval gates, confidence thresholds, audits, escalation rules, and trial modes for consequential workflows.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/kimsanguine/hplan/hitl
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.

Any agent
npx skills add kimsanguine/hplan --skill hitl
Clone the repo
git clone --depth 1 https://github.com/kimsanguine/hplan

Made for: Claude Code.

Or install discover, the plugin that ships this one along with the rest of its 6 skills.

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 hitl

README.md
[![agentmods](https://agentmods.dev/badge/skills/kimsanguine/hplan/hitl.svg)](https://agentmods.dev/skills/kimsanguine/hplan/hitl)
Your own site
<a href="https://agentmods.dev/skills/kimsanguine/hplan/hitl"><img src="https://agentmods.dev/badge/skills/kimsanguine/hplan/hitl.svg" alt="Measured on agentmods" height="20"></a>
Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,718 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 $0.00058 $0.03718
Opus 5 $0.00029 $0.01859
Sonnet 5 $0.00012 $0.00744
Haiku 4.5 $0.00006 $0.00372

Measured 8d ago against content hash ffa987c66fc8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

hitl 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 8d 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.

discover/skills/hitl/SKILL.md · 311 lines

How it starts

The opening of the file, as written. The whole thing — 311 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Core Goal

  • 에이전트의 각 작업마다 적절한 자동화 레벨(1~5)을 결정하고, 인간이 개입해야 할 트리거 조건을 명시하여 신뢰성과 안전성을 확보
  • 가역성(되돌릴 수 있는가)과 오류 영향도(피해 범위)의 2축 매트릭스를 통해 객관적으로 자동화 경계를 결정
  • Approval Gate, Confidence Threshold, Periodic Audit, Escalation Chain, Shadow Mode 등 5가지 HITL 패턴 중 업무 특성에 맞는 것을 선택

Trigger Gate

Use This Skill When

  • 에이전트가 의사결정, 송금, 고객 대면, 데이터 삭제 등 "중요한 작업"을 할 때
  • "충분히 정확할까?"보다는 "100% 자율이어도 될까?"라는 고민이 있을 때
  • 에이전트의 오류가 고객 손실, 법적 책임, 평판 손상으로 이어질 수 있을 때
  • 초기 배포 또는 새로운 에이전트를 출시할 때 (사용자 신뢰 구축 전)

Route to Other Skills When

  • HITL 설계가 완료된 후 에이전트 프롬프트와 인스트럭션을 작성해야 할 때 → deliver/agent-setup — Failure Handling에 HITL 전략 반영
  • 에이전트의 신뢰도를 측정하고 Full Autonomous로 전환할지 판단해야 할 때 → operate/metrics-design
  • 에이전트 제품을 외부에 출시할 때 신뢰 구축 시퀀스를 설계해야 할 때 → architect/strategy
  • 빌드 시점 PreToolUse 차단 (PRD/spec 파일 작성을 게이트 미통과 시 막기) → hooks/gate_guard.py (hplan plugin). 이 skill의 hitl은 agent 런타임 — 시점이 다름.

Boundary Checks

  • 설계 vs 운영: HITL은 "어디에 인간이 개입할지를 설계"하는 것이지, 실제로 인간을 배치하거나 모니터링 대시보드를 만드는 것은 아님 — 구현은 팀이 담당
  • 모든 작업에 필수: HITL은 선택이 아니라 필수 — 완전 자율 에이전트(Level 5)는 극히 제한적인 경우에만 정당화됨 (낮은 오류 영향도 + 높은 가역성)

Human-in-the-Loop Design

에이전트의 가장 위험한 기본값: "전부 자동화하자"

완전 자율 에이전트는 이론적으로 매력적이지만, 현실에서는:

  • 할루시네이션이 조용히 실행됨 → 잘못된 결정이 누적
  • 에러가 발생해도 아무도 모름 → 피해가 증폭
  • 사용자 신뢰 상실 → 에이전트 전체를 불신

Human-in-the-Loop(HITL)은 어디에 인간 판단을 넣을지 의도적으로 설계하는 것입니다.


자동화 스펙트럼 (5단계)

모든 에이전트 작업은 이 스펙트럼 위에 놓입니다:

Level 1: Manual          — 에이전트가 정보 제공, 인간이 모든 판단 + 실행
Level 2: Suggest          — 에이전트가 추천, 인간이 승인 후 실행
Level 3: Act-and-Report   — 에이전트가 실행 후 결과 보고, 인간이 검토
Level 4: Act-and-Escalate — 에이전트가 실행, 이상 시에만 인간 개입
Level 5: Full Autonomous  — 에이전트가 판단 + 실행 + 모니터링 전부

⚠️ Level 5는 에이전트 오류의 영향이 극히 낮은 경우에만 적용. 대부분의 에이전트는 Level 2~4가 적합합니다.


개입 지점 결정 매트릭스

작업별로 자동화 레벨을 결정하는 2축 매트릭스:

              오류 영향도
              낮음  →  높음
가  높음  │ Level 4  │ Level 2   │
역         │ (자동+  │ (인간     │
성         │  이상    │  승인     │
           │  감지)   │  필수)    │
   낮음  │ Level 5  │ Level 3   │
           │ (완전    │ (실행후   │
           │  자동)   │  보고)    │

Read the full file on GitHub · 311 lines

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 8d ago First seen · 311 lines · 58 tokens per session scan A ffa987c66fc8

Subscribe to this mod's changes

hitl is a skill published in the GitHub repository kimsanguine/hplan (2 stars, last pushed 22d ago), licensed MIT. It adds 58 tokens to every session and 3,718 once invoked, about $0.0003 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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