feature-context

A project skill for defining and maintaining shared business terms, scenario boundaries, and architecture decisions.

In plain words
What is it for?
Use it to create or update functional context, clarify ambiguous requirements, check business rules against code, and record decisions in context files or architecture decision records.
Why use it?
It reduces confusion when people use the same word differently and keeps confirmed decisions consistent with the codebase.

Skill for Claude CodeCodex

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 skills/voidtechnology/voidtech-claude-plugins/feature-context
Any agent
npx skills add VoidTechnology/voidtech-claude-plugins --skill feature-context
Clone the repo
git clone --depth 1 https://github.com/VoidTechnology/voidtech-claude-plugins

Made for: Claude Code, Codex.

Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 867 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 $0.00044 $0.00867
Opus 5 $0.00022 $0.00434
Sonnet 5 $0.00009 $0.00173
Haiku 4.5 $0.00004 $0.00087

Measured yesterday against content hash 4b2a1bb76237, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

feature-context 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 yesterday.

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.

plugins/voidtech-engineering/skills/feature-context/SKILL.md · 76 lines

What it actually says

Vendored from mattpocock/skills · MIT © 2026 Matt Pocock · upstream 6eeb81b · 已汉化并完成 VoidTech 插件内自包含适配。LICENSE 见 ../_vendor-licenses/mattpocock-LICENSE

功能上下文

在设计过程中同步维护项目的功能上下文:检查业务词汇是否准确,用具体场景验证概念边界,并把确认后的术语和决策及时写入词汇表或 ADR。仅仅读取 CONTEXT.md 不需要调用本技能;只有新增、修改或澄清功能上下文时才使用。

文件结构

多数仓库只有单一上下文:

/
├── CONTEXT.md
├── docs/
│   └── adr/
│       ├── 0001-event-sourced-orders.md
│       └── 0002-postgres-for-write-model.md
└── src/

如果根目录存在 CONTEXT-MAP.md,说明仓库有多个上下文。这张图指向每个上下文所在之处:

/
├── CONTEXT-MAP.md
├── docs/
│   └── adr/                          ← system-wide decisions
├── src/
│   ├── ordering/
│   │   ├── CONTEXT.md
│   │   └── docs/adr/                 ← context-specific decisions
│   └── billing/
│       ├── CONTEXT.md
│       └── docs/adr/

按需创建文件。确认第一个业务术语时再创建 CONTEXT.md;需要记录第一份 ADR 时再创建 docs/adr/

会话进行中

对照词汇表检查用词

当用户用的术语与 CONTEXT.md 中既有的语言冲突时,立即指出。"你的词汇表把 'cancellation' 定义为 X,但你似乎指的是 Y——到底是哪个?"

明确含糊的措辞

当用户使用模糊或一词多义的术语时,提出一个精确的规范术语。"你说 'account'——你指的是 Customer 还是 User?这是两样不同的东西。"

用具体场景验证

讨论业务概念关系时,使用具体场景验证边界情况,帮助用户明确相近概念之间的区别。

与代码交叉核对

当用户说明某项业务规则时,检查代码是否一致。发现矛盾时直接指出:"代码会取消整个 Order,但你刚才说可以部分取消。哪一个才是预期行为?"

内联更新 CONTEXT.md

术语确认后立即更新 CONTEXT.md,不要等到会话结束再集中整理。使用 CONTEXT-FORMAT.md 中的格式。

CONTEXT.md 应当完全不含实现细节。不要把 CONTEXT.md 当成规格、草稿本或实现决策的仓库。它是一份词汇表,仅此而已。

谨慎提议 ADR

只有当以下三点同时成立时,才提议创建 ADR:

  1. 难以逆转 — 以后改变决定的成本较高
  2. 缺少背景就难以理解 — 未来读者可能无法判断为什么这样选择
  3. 是一次真实权衡的结果 — 确有可选项,而你为了特定理由选了其一

只要三者缺一,就跳过 ADR。使用 ADR-FORMAT.md 中的格式。

Files

What ships with it

2 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. yesterday First seen · 76 lines · 44 tokens per session scan A 4b2a1bb76237

Subscribe to this mod's changes

feature-context is a skill published in the GitHub repository VoidTechnology/voidtech-claude-plugins (2 stars, last pushed 28d ago), licensed Apache-2.0. It adds 44 tokens to every session and 867 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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