feature

feature is a command for Claude Code from Joe-rq/harness-lab. It costs 20 tokens per session (523 once invoked), scanned A, original, MIT.

A guided command for creating a feature request (REQ), a written plan for adding a new capability to a project.

In plain words
What is it for?
Use it to plan features such as email verification. It creates the REQ, adds the supplied details, and points to the next implementation step.
Why use it?
It records the user problem and background before work begins. It also prompts you to define what the feature will and will not include, helping limit uncontrolled expansion.

Command 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 commands/joe-rq/harness-lab/feature
Clone the repo
git clone --depth 1 https://github.com/Joe-rq/harness-lab

Made for: Claude Code.

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 feature

README.md
[![agentmods](https://agentmods.dev/badge/commands/joe-rq/harness-lab/feature.svg)](https://agentmods.dev/commands/joe-rq/harness-lab/feature)
Your own site
<a href="https://agentmods.dev/commands/joe-rq/harness-lab/feature"><img src="https://agentmods.dev/badge/commands/joe-rq/harness-lab/feature.svg" alt="Measured on agentmods" height="20"></a>
Per session 20 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 523 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 5.1 $0.00020 $0.00523
Opus 5 $0.00010 $0.00262
Sonnet 5 $0.00004 $0.00105
Haiku 4.5 $0.00002 $0.00052

Measured 5d ago against content hash 10d317dd30a8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

feature 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 5d 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/commands/feature.md · 57 lines

What it actually says

/feature

目标

引导用户创建 feature 型 REQ。

前置检查

  1. 确认 requirements/ 目录存在。不存在 → 提示先运行 /harness-setup
  2. 确认 package.json 中有 req:create 脚本。不存在 → 提示先运行 /harness-setup
  3. 确认当前无活跃 REQ(requirements/INDEX.md## 当前活跃 REQ 下为"无")。有活跃 REQ → 提示先完成或搁置当前 REQ

执行步骤

Step 1: 收集功能信息

使用 AskUserQuestion 询问:

  1. 功能名称(必填):简短描述要实现的功能,如"用户邮箱验证"
  2. 用户痛点(必填):用户当前遇到什么问题?
  3. 业务背景(可选):为什么现在要做?

Step 2: 创建 feature REQ

运行:

npm run req:create -- --title "feat: [功能名称]" --type feature

Step 3: 补充功能详情

用 Edit 将 REQ 中的占位符替换为用户提供的实际信息:

  • [请描述](背景-用户痛点)→ 用户的痛点
  • [请描述](背景-业务背景)→ 用户的业务背景
  • [功能名称](目标)→ 用户的实际功能名称

Step 4: 提示用户确认

重点提醒

  1. Scope Control 的 CAN/CANNOT 必须填写(feature 型最易功能蔓延)
  2. 考虑是否需要创建设计文档(docs/plans/{reqId}-design.md
  3. 补充"颗粒度自检"
  4. 确认后运行 npm run req:start -- --id {reqId} --phase implementation

输出

  1. 创建的 REQ ID 和文件路径
  2. REQ 类型:feature
  3. 已预填充:用户痛点/业务背景占位、Scope Control 必填提示、建议创建设计文档
  4. 下一步:补充 Scope Control CAN/CANNOT,运行 req:start
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. 5d ago First seen · 57 lines · 20 tokens per session scan A 10d317dd30a8

Subscribe to this mod's changes

feature is a command published in the GitHub repository Joe-rq/harness-lab (20 stars, last pushed 23d ago), licensed MIT. It adds 20 tokens to every session and 523 once invoked, about $0.0001 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 2026-08-30.