nw-distill

nw-distill is a skill for Claude Code from nWave-ai/nWave. It costs 46 tokens per session (16,614 once invoked), scanned A, original, MIT.

A method for creating acceptance tests, which describe the conditions a feature must meet to be accepted. It adapts the test approach to the project's programming language and reconciles decisions from earlier work.

In plain words
What is it for?
Use it to design acceptance tests, account for missing information, and update related documents when decisions change.
Why use it?
It helps turn requirements into testable expectations and keeps acceptance tests consistent with the project's language and prior decisions.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: positional $N argument; mentions Claude Code.

Good fit Use it to design acceptance tests, account for missing information, and update related documents when decisions change.

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Install with agentmods
npx agentmods add skills/nwave-ai/nwave/nw-distill
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 nWave-ai/nWave --skill nw-distill
Clone the repo
git clone --depth 1 https://github.com/nWave-ai/nWave

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 nw-distill

README.md
[![agentmods](https://agentmods.dev/badge/skills/nwave-ai/nwave/nw-distill/github.svg)](https://agentmods.dev/skills/nwave-ai/nwave/nw-distill)
Your own site
<a href="https://agentmods.dev/skills/nwave-ai/nwave/nw-distill"><img src="https://agentmods.dev/badge/skills/nwave-ai/nwave/nw-distill/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 nw-distill

Your own site · 80×15
<a href="https://agentmods.dev/skills/nwave-ai/nwave/nw-distill"><img src="https://agentmods.dev/badge/skills/nwave-ai/nwave/nw-distill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 16,614 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 4 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Agent Snooping · line 43
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
  • medium Agent Snooping · line 77
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
  • medium Agent Snooping · line 83
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
  • medium Rogue Agent · line 582
    Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.
    Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
How audits are shown
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 $0.00046 $0.16614
Opus 5 $0.00023 $0.08307
Sonnet 5 $0.00009 $0.03323
Haiku 4.5 $0.00005 $0.01661

Measured 5d ago against content hash 85756f7beca4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

nw-distill 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.

nWave/skills/nw-distill/SKILL.md · 966 lines

How it starts

The opening of the file, as written. The whole thing — 966 lines — stays where its author put it; the contents beside it link to each section on GitHub.

DISTILL Methodology: Acceptance Test Creation

This skill provides the acceptance designer's methodology for creating acceptance tests. The orchestrator controls the overall flow (agent dispatch, review gate, handoff) -- this skill focuses on HOW to create good acceptance tests.

LANGUAGE CONVENTION FRAME (read FIRST — overrides all examples below)

Code examples in this skill use Python syntax for illustration only. They are NOT prescriptive about target language. nWave is language-agnostic per the "genericity and agnosticism" mandate (2026-05-24).

Before authoring ATs, detect the target project's language from these manifest files (in order):

  • package.json → TypeScript / JavaScript (jest, vitest, cucumber-js, playwright)
  • Cargo.toml → Rust (cargo test, proptest, cucumber-rust)
  • go.mod → Go (testing, ginkgo, godog)
  • pyproject.toml / setup.py / Pipfile → Python (pytest, pytest-bdd, hypothesis)
  • pom.xml / build.gradle → Java / Kotlin (JUnit5, Cucumber-JVM, jqwik)
  • *.csproj / *.fsproj → C# / F# (xUnit, SpecFlow, FsCheck)
  • Gemfile → Ruby (RSpec, Cucumber-Ruby)
  • Package.swift → Swift (XCTest, swift-testing)

When the target language is NOT Python:

  1. Adapt EVERY code example to the target language's conventions (naming, imports, type system, test-framework idioms, file extensions).
  2. Replace Python-specific imports (from pytest_bdd import ..., from hypothesis import ..., import dataclasses) with target-language equivalents (import { Given, When, Then } from '@cucumber/cucumber', import * as fc from 'fast-check', etc.).
  3. Replace Python type hints (def f(x: int) -> str) with target-language type syntax.
  4. Replace Python directory conventions (tests/, __init__.py) with target conventions (test/, __tests__/, no init files for TS/JS).
  5. Replace Python class/function syntax (class Customer:, def given_port():) with target equivalents.

Project conventions ALWAYS WIN over examples below. If the user's repo has 50 TS files using describe()/it() blocks and zero Python files, ATs MUST be TypeScript with describe()/it() — never Python pytest-bdd regardless of how authoritative this skill's examples look.

Read the full file on GitHub · 966 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. 5d ago First seen · 966 lines · 46 tokens per session scan A 85756f7beca4

Subscribe to this mod's changes

nw-distill is a skill published in the GitHub repository nWave-ai/nWave (610 stars, last pushed 3d ago), licensed MIT. It adds 46 tokens to every session and 16,614 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 2026-09-03.