My-CODEX-Configuration: Skill for Codex

.codex/create-update-architecture-md/SKILL.md

create-update-architecture-md is a skill for Codex from Krusty84/My-CODEX-Configuration. It costs 50 tokens per session (357 once invoked), scanned A, original, MIT.

A set of instructions for creating or updating ARCHITECTURE.md, a document that explains how a software repository is organized and how its main parts work together. It focuses on structure, data flow, technical decisions, dependencies, and known limits.

In plain words
What is it for?
Use it to document a repository’s modules, runtime components, data flow, external services, build checks, design decisions, and constraints.
Why use it?
It gives new contributors a reliable explanation of the current system and prevents architecture documentation from describing plans or guesses instead of the code that exists.

Skill for Codex

Written for Codex: installed under .codex/.

This is Krusty84/My-CODEX-Configuration's own configuration. It tells Codex how to work on My-CODEX-Configuration 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 My-CODEX-Configuration configures →

Reuse

Borrowing it

Nothing to install: this file belongs to Krusty84/My-CODEX-Configuration. 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/Krusty84/My-CODEX-Configuration/main/.codex/create-update-architecture-md/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/Krusty84/My-CODEX-Configuration

Made for: Codex.

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 create-update-architecture-md

README.md
[![agentmods](https://agentmods.dev/badge/skills/krusty84/my-codex-configuration/create-update-architecture-md/github.svg)](https://agentmods.dev/skills/krusty84/my-codex-configuration/create-update-architecture-md)
Your own site
<a href="https://agentmods.dev/skills/krusty84/my-codex-configuration/create-update-architecture-md"><img src="https://agentmods.dev/badge/skills/krusty84/my-codex-configuration/create-update-architecture-md/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 create-update-architecture-md

Your own site · 80×15
<a href="https://agentmods.dev/skills/krusty84/my-codex-configuration/create-update-architecture-md"><img src="https://agentmods.dev/badge/skills/krusty84/my-codex-configuration/create-update-architecture-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 357 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 $0.00050 $0.00357
Opus 5 $0.00025 $0.00179
Sonnet 5 $0.00010 $0.00071
Haiku 4.5 $0.00005 $0.00036

Measured 8d ago against content hash faac5dfdafe3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

create-update-architecture-md 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.

.codex/create-update-architecture-md/SKILL.md · 55 lines

What it actually says

If this skill is used,say:SKILL_CR_UPD_ARCH_LOADED

Goal

Create or update ARCHITECTURE.md so it explains the system in a way that is useful for future contributors.

Inputs

  • Current code layout
  • Existing docs
  • Build or runtime configuration if relevant
  • User notes about intended architecture

Required sections

When appropriate, include these sections:

  • Overview
  • Repository structure
  • Main runtime components
  • Data flow
  • Key design decisions
  • External dependencies and integrations
  • Build / validation notes
  • Known constraints

Steps

  1. Read the existing architecture document if present.
  2. Inspect the repository layout and identify the top-level components.
  3. Describe responsibilities, boundaries, and interactions.
  4. Prefer concrete structure over abstract buzzwords.
  5. Keep implementation details only where they help explain system behavior.
  6. Reflect the current state of the codebase, not aspirational future design.
  7. Call out uncertainty when the code does not clearly support a strong claim.

Output rules

  • Write for engineers new to the repo.
  • Use references to code files and modules where possible.
  • Prefer short sections and clear headings.
  • Use diagrams only if explicitly requested.
  • Preserve existing terminology and naming.

Do not

  • Do not duplicate large parts of the README.
  • Do not claim clean layering if the repo does not actually follow it.
  • Do not overstate guarantees, scalability, or modularity.
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 · 55 lines · 50 tokens per session scan A faac5dfdafe3

Subscribe to this mod's changes

create-update-architecture-md is a skill published in the GitHub repository Krusty84/My-CODEX-Configuration (1 stars, last pushed 1mo ago), licensed MIT. It adds 50 tokens to every session and 357 once invoked, about $0.0003 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.

Related

Other skills, from other repositories

codex-autoresearch

Run autonomous, measurable experiments in a Git repository: change one hypothesis, verify a numeric metric, keep improvements, and revert failures. Use when the user wants Codex to keep iterating toward a numeric target in the foreground or as a detached background run. Do not use for ordinary one-shot coding…

leo-lilinxiao/codex-autoresearch · 80 tokens

talk-like-scarletkc

A writing guide that makes text sound like the developer scarletkc, including posts, comments, technical opinions, project documents, and translations.

scarletkc/agents · 118 tokens

marketing-copy

Write outbound promotional copy for a product or project: launch and update posts for community platforms and social media, store page descriptions and short blurbs, landing page headlines and calls to action, press-style announcements, and the naming of a product for another language or market. Covers what may be…

scarletkc/agents · 121 tokens

scoped-change

Judgment rules for locating the correct boundary of a requested change: staying inert outside it while completing every required site inside it. Use when scope is ambiguous, a diff touches neighboring surfaces, required dependent edits are unclear, or a proposed compatibility layer, migration, fallback, flag…

scarletkc/agents · 69 tokens

auto-video

Run and validate AutoVideo-Agent Markdown-to-video workflows, including the v0.1-compatible deterministic offline command and v0.2 provider mode with ComfyUI media, Mock or Command TTS, scene-level SRT, normalized timelines, FFmpeg, and deterministic QA. Use for build, plan, provider, or QA requests; MiniMax, hosted…

wangxin6x/AutoVideo-Agent · 86 tokens

novel-writing

Use when planning, drafting, revising, or reviewing fiction where character anchoring, viewpoint drift, implausible knowledge or decisions, unnatural dialogue, scene or chapter continuity, style fidelity, or grounded physical and institutional causality matter.

wgwtest/novel-writing · 51 tokens