Acumen: Skill for Claude Code

.agents/skills/features/SKILL.md

features is a skill for Claude Code from VGrss/Acumen. It costs 25 tokens per session (773 once invoked), scanned A, original, Apache-2.0.

A lightweight inventory of the product's user-facing capabilities, including where they appear in the codebase and who they serve.

In plain words
What is it for?
Use it after shipping or while planning to add or update features, scan the codebase, and compare features with documented user personas.
Why use it?
It gives a team a current view of what has been built, who owns it, and whether its value is being measured.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: installed under .agents/ (shared by several agents).

This is VGrss/Acumen's own configuration. It tells Claude Code how to work on Acumen itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything Acumen configures →

Reuse

Borrowing it

Nothing to install: this file belongs to VGrss/Acumen. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/VGrss/Acumen/main/.agents/skills/features/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/VGrss/Acumen

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 features

README.md
[![agentmods](https://agentmods.dev/badge/skills/vgrss/acumen/features/github.svg)](https://agentmods.dev/skills/vgrss/acumen/features)
Your own site
<a href="https://agentmods.dev/skills/vgrss/acumen/features"><img src="https://agentmods.dev/badge/skills/vgrss/acumen/features/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 features

Your own site · 80×15
<a href="https://agentmods.dev/skills/vgrss/acumen/features"><img src="https://agentmods.dev/badge/skills/vgrss/acumen/features.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 25 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 773 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 $0.00025 $0.00773
Opus 5.5 $0.00010 $0.00309
Sonnet 5.5 $0.00005 $0.00155
Haiku 4.5 $0.00003 $0.00077

Measured 2mo ago against content hash d0b5deccb27a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

features 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 2mo 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.

.agents/skills/features/SKILL.md · 86 lines

How it starts

The opening of the file, as written. The whole thing — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MANDATORY PREPARATION

Invoke /product-thinking — it contains product principles and the Context Gathering Protocol. Follow the protocol before proceeding — if no product context exists yet, you MUST run /teach-acumen first.


Mindset: Know what you've built before deciding what to build next. Features without owners decay. Features without metrics are assumptions.

Behavior

When called with a specific feature or area: Add or update that entry. Ask the user about its current status, who it serves, and how they know it's working.

When called without argument: Scan the codebase and refresh the full inventory. Cross-reference with personas from .acumen/personas.md if available.

Research Process

  1. Read .acumen.md for product context — strategy, metrics, constraints
  2. Read .acumen/features.md for existing inventory
  3. Read .acumen/personas.md for persona alignment (if exists)
  4. Scan the codebase:
    • Route handlers and pages — each is likely a feature surface
    • API endpoints — capabilities exposed
    • Database models — entities the product manages
    • Navigation and menus — user-facing feature organization
    • Feature flags or config — features in rollout or gated
  5. For each feature, determine:
    • Which persona it serves (or if it's orphaned)
    • Current status (shipping, beta, deprecated, broken, unused)
    • Key metric (how you know it's delivering value — or that no one is measuring)
    • Owner (who's responsible — or if no one is)

Output

Write to .acumen/features.md:

# Feature Inventory

_Last updated: [date]_

## Feature Map

| Feature | Serves Persona | Status | Key Metric | Owner | Notes |
|---------|---------------|--------|------------|-------|-------|
| [name] | [persona] | [shipping/beta/deprecated/unknown] | [metric or "unmeasured"] | [owner or "unowned"] | [notes] |

## Feature Areas

Group features into coherent areas. For each area:

### [Area Name]
- **Purpose**: [Why this area exists]
- **Features**: [List of features in this area]
- **Health**: [Overall assessment — thriving, stable, neglected, bloated]

## Gaps

[Features that personas need but don't exist yet. Features that strategy calls for but haven't been built. Reference personas and strategy from .acumen.md.]

## Decay Watch

[Features showing signs of neglect: unowned, unmeasured, no recent commits, known bugs unfixed. These aren't necessarily bad — but they need a conscious decision: invest, maintain, or kill.]

Read the full file on GitHub · 86 lines

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. 2mo ago First seen · 86 lines · 25 tokens per session scan A d0b5deccb27a

Subscribe to this mod's changes

features is a skill published in the GitHub repository VGrss/Acumen (12 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 25 tokens to every session and 773 once invoked, about $0.0001 per session on Opus 5.5. 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.

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