ng-breakdown

ng-breakdown is a command for coding agents from FlyFission/nuclear-grade-context-engineering. It costs 0 tokens per session (1,095 once invoked), scanned A, original, MIT.

A work-breakdown tool that divides a large software effort into complete, non-overlapping deliverables.

In plain words
What is it for?
Use it for epics, features, new subsystems, growing scope, repository structure, or work that several people or agents must share.
Why use it?
It creates one shared map of the work before people design folders, make plans, or split tasks among agents.

Command

Part of the nuclear-grade plugin — 24 skills, 28 commands, 5 agents shipped together

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/flyfission/nuclear-grade-context-engineering/ng-breakdown
Clone the repo
git clone --depth 1 https://github.com/FlyFission/nuclear-grade-context-engineering

Or install nuclear-grade, the plugin that ships this one along with the rest of its 24 skills, 28 commands, 5 agents.

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 ng-breakdown

README.md
[![agentmods](https://agentmods.dev/badge/commands/flyfission/nuclear-grade-context-engineering/ng-breakdown.svg)](https://agentmods.dev/commands/flyfission/nuclear-grade-context-engineering/ng-breakdown)
Your own site
<a href="https://agentmods.dev/commands/flyfission/nuclear-grade-context-engineering/ng-breakdown"><img src="https://agentmods.dev/badge/commands/flyfission/nuclear-grade-context-engineering/ng-breakdown.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,095 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 $0.00000 $0.01095
Opus 5 $0.00000 $0.00548
Sonnet 5 $0.00000 $0.00219
Haiku 4.5 $0.00000 $0.00110

Measured 4d ago against content hash e7aea7d916e5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ng-breakdown 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 4d 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.

commands/ng-breakdown.md · 79 lines

How it starts

The opening of the file, as written. The whole thing — 79 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ng-breakdown

Portable command prompt generated from skills/breaking-down-the-work/SKILL.md. Edit the skill, then run python tools/ng.py gen-commands; do not edit this file by hand.

Splits scope into a product-first work breakdown that follows the 100% rule, keeps pieces from overlapping, uses outline numbers, and gives every piece a dictionary entry. Use when an epic, feature, or new subsystem needs a clean split into deliverables, or one source of truth before folders or work begin. Do not use for a one-file edit or a backlog item already broken down.

Use when

  • An epic, feature, or new subsystem needs breaking down before planning or layout.
  • A folder tree or repo structure is about to be designed and needs a scope basis you can defend.
  • Scope keeps growing and no one can say whether the plan is complete or has overlaps.
  • Several agents or people need one shared map of the work with no overlaps.
  • A .nuclear/changes/<slug>/ packet needs its inside structure decided on principle.

Do not use when

  • A single-file or quick edit with an obvious target and no smaller deliverables under it.
  • A backlog item that is already broken down, owned, and backed by a dictionary.
  • A live incident you have to contain before you stop to reflect.
  • The user wants a schedule, a Gantt chart, a cost estimate, or a project-management certification. A work breakdown feeds those, but it is not them.

Inputs

  • The end deliverable or goal, stated in one line.
  • The mission anchor (.nuclear/mission.md or the ## Mission anchor in risk.md) and the charter, when there is one.
  • Known deliverables, constraints, and any stated non-goals or scope put off for later.
  • The existing repo tree and naming conventions, when the work breakdown will be turned into real folders.
  • templates/standard/wbs.md when you use it.

Prompt text

Build a product-oriented work breakdown (a work breakdown structure, or WBS).

Inputs:
- end deliverable (one line): <the single product or outcome>
- mode: <quick|standard>
- known non-goals / deferred scope: <list or none>
- existing tree to respect: <paths or none>

Do this in order:
1. State the single top deliverable as level 1. If you cannot name one
   product, stop and say so: it is a goal, not a deliverable.
2. Break down by product first: split each parent into the parts (nouns) it is
   made of, not the actions (verbs) done to it. Keep verbs in a labeled
   activity layer only.
3. Apply the 100% rule at every parent: the children must cover exactly the
   parent, no more and no less. Write any deferred scope as an explicit gap line.
4. Keep parts separate, with one home each: every part sits under exactly one
   parent, and no two siblings overlap. Lift shared work into one common part
   rather than duplicating it.
5. Stop splitting at the work-package line: one part that someone can own,
   estimate, and verify. A good test is that it takes between about 8 and 80
   hours of work (the 8/80 rule), which is usually about 2 to 3 levels deep.
   Grade the depth by mode.
6. Number with outline traceability (1, 1.2, 1.2.3).
7. Write the dictionary: for each part give its scope, what is in and out of
   scope, the deliverable, the interfaces, how it is accepted, a rough size,
   the owner, and its dependencies.

Return: the outline-numbered breakdown table, the dictionary, the named common
parts, the deferred-scope/gap line, and a self-check that it adds up to 100% with
no overlap. Do not produce a schedule, a cost estimate, or a compliance claim.
Then hand off to ng-folders.

Read the full file on GitHub · 79 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. 4d ago First seen · 79 lines · 0 tokens per session scan A e7aea7d916e5

Subscribe to this mod's changes

ng-breakdown is a command published in the GitHub repository FlyFission/nuclear-grade-context-engineering (33 stars, last pushed 25d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,095 tokens. 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.