ng-prove

ng-prove is a command for coding agents from FlyFission/nuclear-grade-context-engineering. It costs 0 tokens per session (659 once invoked), scanned A, original, MIT.

A command for building a claim-to-evidence trace. It connects statements about code, safety, security, release readiness, or dependencies to tests, reviews, evaluations, and known gaps.

In plain words
What is it for?
Use it to prepare evidence rows, record missing or deferred checks, choose suitable verification types, and write narrower claims where proof is incomplete.
Why use it?
It makes clear what supports each claim instead of treating passing tests as proof of every conclusion.

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-prove
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-prove

README.md
[![agentmods](https://agentmods.dev/badge/commands/flyfission/nuclear-grade-context-engineering/ng-prove.svg)](https://agentmods.dev/commands/flyfission/nuclear-grade-context-engineering/ng-prove)
Your own site
<a href="https://agentmods.dev/commands/flyfission/nuclear-grade-context-engineering/ng-prove"><img src="https://agentmods.dev/badge/commands/flyfission/nuclear-grade-context-engineering/ng-prove.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 659 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 $0.00659
Opus 5 $0.00000 $0.00329
Sonnet 5 $0.00000 $0.00132
Haiku 4.5 $0.00000 $0.00066

Measured 4d ago against content hash cc62d9d868f5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ng-prove 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-prove.md · 55 lines

How it starts

The opening of the file, as written. The whole thing — 55 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ng-prove

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

Builds claim-to-evidence trace rows with statuses, gaps, tests, evals, reviews, and narrower non-claims. Use when a packet asserts something a reviewer must trust. Do not use to make the final ship decision, judge public legal wording, or invent evidence that does not exist.

Use when

  • A change record makes claims about the code, says something about safety or security, claims release readiness, or claims a dependency can be trusted.
  • Tests pass, but reviewers cannot see which claim each test backs up.
  • Evidence gaps have to be accepted, put off, or treated as blockers.
  • The proof needs the right kind of check. The kinds are self-check, peer-check, concurrent verification (a second person checks as you go), independent verification (a separate person checks afterward), peer review, a test, or an eval.

Do not use when

  • The request is to make the final ship/defer/block decision; use checking-release-readiness after the trace is built.
  • The request is to judge public legal, safety, security, certification, or compliance wording; use checking-legal-and-safety-wording.
  • The request is to validate citation lineage or source authority; use checking-source-claims.

Inputs

  • basis.md, trace.md, verification.md, and ship.md.
  • Test commands, CI runs, reviews, logs, diffs, screenshots, and source links.
  • Known gaps and leftover risks.

Prompt text

Prove the important Nuclear-grade claims in this packet.

Inputs:
- packet: .nuclear/changes/<slug>/
- claims: <list or source file>
- evidence available: <commands/links/reviews/logs>
- known gaps: <list>

Return:
- claim -> basis -> control/design feature -> support type -> verification type -> evidence -> status -> ship posture
- for each load-bearing claim: evidence custody (generated, selected, transformed/summarized, executed/captured, retained, presented)
- the five-axis actor–evidence coupling profile (actor, context, mechanism, authority, resource), the consequence-specific minimum, and any residual coupling or blocker
- narrower wording for any claim that is too broad
- the gaps, deferrals, or blockers, stated plainly
- the validator command to run

Read the full file on GitHub · 55 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 · 55 lines · 0 tokens per session scan A cc62d9d868f5

Subscribe to this mod's changes

ng-prove 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 659 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.