deconstruct

deconstruct is a skill for Claude Code from mycelium-hq/ai-brain-starter. It costs 101 tokens per session (2,076 once invoked), scanned A, original, MIT.

A structured method for examining decisions and strategies by questioning assumptions and reasoning from basic facts. It applies when a choice is being justified mainly by custom, common practice, or copying others.

In plain words
What is it for?
Use it to examine high-stakes decisions, challenge claims such as “that’s how it’s done,” and identify the assumptions behind a proposed strategy.
Why use it?
It helps expose rules that may be accepted without checking whether they fit the actual situation. This can clarify choices about pricing, products, hiring, roadmaps, or careers.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the ai-brain-starter plugin — 38 skills, 17 commands, 3 agents, 1 hook shipped together

Good fit Use it to examine high-stakes decisions, challenge claims such as “that’s how it’s done,” and identify the assumptions behind a proposed strategy.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mycelium-hq/ai-brain-starter/deconstruct
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 mycelium-hq/ai-brain-starter --skill deconstruct
Clone the repo
git clone --depth 1 https://github.com/mycelium-hq/ai-brain-starter

Made for: Claude Code.

Or install ai-brain-starter, the plugin that ships this one along with the rest of its 38 skills, 17 commands, 3 agents, 1 hook.

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 deconstruct

README.md
[![agentmods](https://agentmods.dev/badge/skills/mycelium-hq/ai-brain-starter/deconstruct/github.svg)](https://agentmods.dev/skills/mycelium-hq/ai-brain-starter/deconstruct)
Your own site
<a href="https://agentmods.dev/skills/mycelium-hq/ai-brain-starter/deconstruct"><img src="https://agentmods.dev/badge/skills/mycelium-hq/ai-brain-starter/deconstruct/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 deconstruct

Your own site · 80×15
<a href="https://agentmods.dev/skills/mycelium-hq/ai-brain-starter/deconstruct"><img src="https://agentmods.dev/badge/skills/mycelium-hq/ai-brain-starter/deconstruct.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 101 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,076 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 pass 7 Sept 2026
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 $0.00101 $0.02076
Opus 5 $0.00051 $0.01038
Sonnet 5 $0.00020 $0.00415
Haiku 4.5 $0.00010 $0.00208

Measured 8d ago against content hash ccc1dab06aea, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

deconstruct 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 8d 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.

skills/deconstruct/SKILL.md · 184 lines

How it starts

The opening of the file, as written. The whole thing — 184 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Deconstruct -- First Principles Analysis

A structured thinking skill modeled on Aristotle's method: find the foundational truths that cannot be derived from anything more basic, then reason upward from those truths alone.

When This Fires

  • Manual: User types /deconstruct and describes a problem, decision, or situation
  • Auto-triggered (fast mode, optional): When logging a decision with stakes: high in any decision template, Claude can auto-offer: "This is high-stakes. Want me to deconstruct it before you commit?" If yes, run fast mode (Phase 1 + Phase 4 only). To enable, add deconstruct_auto: true to your decision template frontmatter.
  • Auto-triggered (panel integration, optional): If your vault has an advisory panel skill (like the daily-journal plugin), add a trigger row for convention-following language. When the user says "that's how it's done," "best practice," "everyone does it this way," or copies a competitor's approach without questioning why, one panel voice surfaces 1-2 hidden assumptions in one sentence, then asks: "Is that actually true for YOU, or is it convention?"

Two Modes

Fast Mode (default for auto-triggers)

Phase 1 (surface assumptions) + Phase 4 (high-leverage move). Use for daily decisions and anything where the full run would be overkill.

Full Mode (default for /deconstruct)

All four phases in sequence. Use for pricing models, business models, career decisions, hiring processes, strategy pivots, and anything where "that's how it's done" is load-bearing in the current approach.

How It Works

When invoked manually via /deconstruct, start by asking:

"Describe the problem, decision, or situation you want me to deconstruct. Include enough context that I can distinguish your actual constraints from your assumptions. Tell me what you know is true and what you believe is true."

If the problem is too vague to deconstruct meaningfully, ask 1-2 clarifying questions. Do not guess.

Then execute the phases in order. Complete each phase fully before moving to the next.

Read the full file on GitHub · 184 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. 8d ago First seen · 184 lines · 101 tokens per session scan A ccc1dab06aea

Subscribe to this mod's changes

deconstruct is a skill published in the GitHub repository mycelium-hq/ai-brain-starter (36 stars, last pushed yesterday), licensed MIT. It adds 101 tokens to every session and 2,076 once invoked, about $0.0005 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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